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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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 Posted: Sat May 31, 2025 3:51 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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Finished the engine today! Just need to put the exhaust on and it's ready to mate to transmission and install....
I am back to where I was 10 years ago and in need of the first part I ever tried to find.. if anyone has one let me know. I had some ideas of using other materials but it is a tricky piece because it has to flex into place and have the flat section where it is sandwiched between the intake and lid.
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Wed May 21, 2025 11:19 am Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
Well after climbing through an attic full of vw parts and looking at a good 10+ fans I can conclude that the VW emblem is not an indicator of tdc.
In fact I was able to find a total of 5 since so many where rusted or painted I couldn't even find the stamp on them.Of those five three where at bdc one was at 3 o'clock and I believe one was at 9 o'clock as well ...
So it seems like it is by chance that the ones you have are lined up at tdc...
It's a 1 in 4 chance.
So the pulley was likely stamped on the line all in the same spot, but then that was taken and matched to the aluminum fan. At this point there was a 25% chance that it could end up at tdc so not surprising that you have some and a good chance there are a lot out there that it does line up
But I would conclude that it is not an indicator.
I got a new fan. It has the 0 and the type 4 timing mark.Its in the sonic cleaner...I will paint it without taking it apart and move forward....
Moral of the story...DONT DISCONNECT THE FAN FROM THE PULLEY. |
 ....unless you mark it!
I have concluded though that somewhere either near the end of 411 or in the middle of 412 production....they started making fans that would work on more than one vehicle....like buses and 412's or maybe even 914's.
Hence why over the years I have found more than a few fans that have both:
1. the engraved marks on the aluminum fan portion....various combinations of the 0, the red 27* BTDC mark, sometimes another black mark correspsonding to something in between the two, some fans with no 0 and only a black or red mark.....and....
2. Also having a "0/TDC" mark at approximately 10:30 position on the pulley ring that cooresponds to the offset bus plastic or metal timing scale.
If you can find a fan like that....or just put the bus TDC mark or the 411/412 TDC mark on the pulley ring yourself.....you will never again have an issue with disassembling it and getting it out of balance.
Oh...and do yourself a favor. Go ahead and set up the dial indicator and make sure the pulley ring is concentric to the fan casting of your "new" fan.
The problem is that over the years, so many owners could have done so many things.
Also, if you can....get a good spare fan.
My original 412 fan is missing two blades. One was me doing the stupid and one was something that fell into the fan. They are 180* apart so I will do a others have done and smooth off the nubs and/or knock out two more to keep it balanced in all four quandrants. I will keep it as a spare.
It can happen to anyone. Get a spare fan. They will get less and less available as time goes on.
also if you have not seen it....here is a good thread about type 4 fan timing marks from the 911/914 forum.
https://www.thesamba.com/vw/forum/viewtopic.php?p=8776292&highlight=#8776292
Also in that thread is a guy with a fan that has no "0"...but also has the VW symbol at TDC.
I cannot tell if I am halucinating but it almost looks like a small "0" symbol hiding in the rust above his VW symbol????
Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Wed May 21, 2025 8:32 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Well after climbing through an attic full of vw parts and looking at a good 10+ fans I can conclude that the VW emblem is not an indicator of tdc.
In fact I was able to find a total of 5 since so many where rusted or painted I couldn't even find the stamp on them.Of those five three where at bdc one was at 3 o'clock and I believe one was at 9 o'clock as well ...
So it seems like it is by chance that the ones you have are lined up at tdc...
It's a 1 in 4 chance.
So the pulley was likely stamped on the line all in the same spot, but then that was taken and matched to the aluminum fan. At this point there was a 25% chance that it could end up at tdc so not surprising that you have some and a good chance there are a lot out there that it does line up
But I would conclude that it is not an indicator.
I got a new fan. It has the 0 and the type 4 timing mark.Its in the sonic cleaner...I will paint it without taking it apart and move forward....
Moral of the story...DONT DISCONNECT THE FAN FROM THE PULLEY. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Tue May 20, 2025 1:23 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
Ok, well I in the meantime have talked to my machine shop vw guy about rebalancing it and he wasn't really set up but could send me with a crank to the place that does his balancing or something...but he then says he's got piles of fans if I want to come get one and can have one.
So I saw you response and called him back and he said I could come look through them all I want.
If I find out they are all stamped at tdc then I'm good to go.If not I will just grab a new fan.
I also have a type 2 bus parts guy real close and I can see if he has any fans I can look through if I'm indecisive with what the machine shop has to look through. He said he has piles of them, so we'll see.
I might be able to do that tomorrow so I'll post an update afterwards. Thanks again for the help. |
The other way to look at this is ...that if you get the pulley back on very well centered with the dial indicator....and you then have a noticable imbalance....ther are ony 4 positions that there could be.
I would just loosen it back up, take the pulley off and rotate it 90*....recenter it....and run it again. Yes, its tedious but it can get you back to where it ws when it left the factory.
If you end up having to do this with the engine in the car....thesimplest way is to make a bench top board with three dirt cheap skate bearings on a piece of MDO board with the dial indicator mounted on the board.
Once you get the hang of this you can put a fan on the board and get it recentered in roughly 10-15 minutes of work.
An even easier method if you set up this board...once you get one fan perfectly recentered, but three fixed pins on the board that bear against the pulley ring at 120* apart so you can take a fan bolted to its hub....put it in the bearings with the four bolts loose and the three fixed pins around the perifphery will push the pulley ring the center position the econd you put the fan in the jig...and then just tighten the four bolts. Done. Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Tue May 20, 2025 11:24 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Ok, well I in the meantime have talked to my machine shop vw guy about rebalancing it and he wasn't really set up but could send me with a crank to the place that does his balancing or something...but he then says he's got piles of fans if I want to come get one and can have one.
So I saw you response and called him back and he said I could come look through them all I want.
If I find out they are all stamped at tdc then I'm good to go.If not I will just grab a new fan.
I also have a type 2 bus parts guy real close and I can see if he has any fans I can look through if I'm indecisive with what the machine shop has to look through. He said he has piles of them, so we'll see.
I might be able to do that tomorrow so I'll post an update afterwards. Thanks again for the help. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Tue May 20, 2025 10:50 am Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
| raygreenwood wrote: |
| Jeremiah Berger wrote: |
Ok so what about the VW stamp in the pulley? Is that just coincidence that this lines up with tdc in that quadrant? Or do any of the other pulleys have a VW stamp like mine?
Also considering what you are saying the weight is actually in the same quadrant in each instance correct? Let's call it 730-1030...
If I put my logo mark at bottomdc I get my weight at about 930.
That is some consistency I guess being all in the same quadrant? |
Forgot to look for the vw logo. Checking later.
Ray |
Thanks Ray, I'll check back in a bit. |
Ok.....I looked at three of the four fans I have handy. One is disassembled and in hindsight I should have checked it as well because if it has bus timing mark on the pulley as well a 0 for the 411/412 timing it would have been one more indicator.
It literally took me 30 minutes to find ANY VW stamps and no two were the same size/diameter. Very faint. One hidden by aftermarket paint and the other two were shallow and rusted over.
So....
Fan #1 is off of my engine. It is a spinner style with the rubber nosecone. It's positions are known to be factory. It has the "0" for TDC and the red mark for 27°BTDC....and the bus timing mark on the pulley......and it has the VW logo corresponding to "0"/TDC.
Fan #2 is a flat faced bus style fan from a bus. It has no "0" for TDC like those used on 411/412.....but placing it with the locating pin at about 10:30 and counting fins over to find where TDC is.....you can see the bus timing mark on the pulley at ~10:30-ish.....and yes....there is a VW logo at the 12:00/ "0" position.
Fan #3 is kind of a mess. It has been disassembled....and painted black all over including the aluminum section. It has the spinner style, cone shaped aluminum section and it has a "0" for TDC so it was originally a 411/412 or 914 fan. But, it has a timing mark in approximately the right position for the bus but it's not a factory made mark. It also has one at 180° to the bus timing mark so someone had made marks to be able to find TDC on all four cylinders.....and its VW logo is at ~3:00 position.
So I would call this best intelligent guess from two data points that the stamped VW logo on the pulley should be at 12:00/TDC.
A great way to get a good cross section of data points is to ask the guys in the bus forum to put their engine at TDC by the timing scale and see if a VW logo appears on the pulley at 12:00.
I will also add this information to both of my threads on type 4 fans. One thread is all about all of the different timing marks and the other one was linked here already about recentering the fan pulley.
If this turns out to be a common item.....VW logo at 12:00 TDC....it can help a lot of people.
Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Mon May 19, 2025 2:34 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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| raygreenwood wrote: |
| Jeremiah Berger wrote: |
Ok so what about the VW stamp in the pulley? Is that just coincidence that this lines up with tdc in that quadrant? Or do any of the other pulleys have a VW stamp like mine?
Also considering what you are saying the weight is actually in the same quadrant in each instance correct? Let's call it 730-1030...
If I put my logo mark at bottomdc I get my weight at about 930.
That is some consistency I guess being all in the same quadrant? |
Forgot to look for the vw logo. Checking later.
Ray |
Thanks Ray, I'll check back in a bit. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Mon May 19, 2025 6:27 am Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
Ok so what about the VW stamp in the pulley? Is that just coincidence that this lines up with tdc in that quadrant? Or do any of the other pulleys have a VW stamp like mine?
Also considering what you are saying the weight is actually in the same quadrant in each instance correct? Let's call it 730-1030...
If I put my logo mark at bottomdc I get my weight at about 930.
That is some consistency I guess being all in the same quadrant? |
Forgot to look for the vw logo. Checking later.
Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Mon May 19, 2025 4:14 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Ok so what about the VW stamp in the pulley? Is that just coincidence that this lines up with tdc in that quadrant? Or do any of the other pulleys have a VW stamp like mine?
Also considering what you are saying the weight is actually in the same quadrant in each instance correct? Let's call it 730-1030...
If I put my logo mark at bottomdc I get my weight at about 930.
That is some consistency I guess being all in the same quadrant? |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Mon May 19, 2025 4:12 am Post subject: Re: Jeremiah's 73 412 restoration project |
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| raygreenwood wrote: |
| heimlich wrote: |
| raygreenwood wrote: |
| Jeremiah Berger wrote: |
Well unfortunately I made the mistake of not only taking my fan apart but also not marking it for orientation for reassembling.
I originally thought it had no orientation because the timing mark was not on the pulley like a bus. I then noticed before assembling that there was a weight embedded in the edge of the pulley, obviously balanced from the factory.
Then I went on here and read that not only is it balanced that it shouldn't be taken apart because it has to be recentered/ trued when put back together
Even if I can figure out the trueing part, am I screwed on the balance weight orientation? Or is there by some miracle chance they where all oriented a certain way to compensate for the fan hub eccentricity?
Did any of your fan pulleys have the VW stamp like mine did? Like I said it aligns exactly with tdc mark when in that quadrant....
Any help is greatly appreciated like usual. I guess it's better finding out now then later... |
So....a couple of things I can do.
1. I have a stack of about 6 fans and I can check and see if there is any similarity in weight position.
2. But.....even though our timing marks are on the aluminum part...sometimes there is a notch or punch mark that is on the pulley that either marks TDC corresponding to the aluminum fan or to a bus timing scale.
3. Check this out. Once you find the orientation it's not that hard for bolt it onto the end of the crank and work with a dial indicator to recenter the fan.
https://www.thesamba.com/vw/forum/viewtopic.php?t=693897&highlight=fan+alignment
Ray |
Looks like you have a key on that 3 bolt part. Does that key align with TDC? Whatever it aligns to you can then use geometry to find the angles you need. Type 1 does something similar. Someone made a geometry wheel to overlay onto the pulley belt that bolts to the crank. |
The three bolt "hub" is not the issue.
The fan is seperate from that and is made from TWO pieces.
1. The cast aluminum fan with the blades that bolts to that 3-bolt hub
2. The steel fan belt pulley ring that bolts to the case aluminum fan with 4 "through bolts".
The problem is that the fan ring was unbolted from the aluminum fan section. This causes 2 problems:
1. The four fan ring through bolts are not in precision holes. So if you loosen these four bolts so that the pulley ring is loose or remove the pulley ring altogether.....it will not SIMPLY go back on concentric to the cast aluminum fan section. This means that the pulley will wobble so hard it typically throws a belt in seconds.
At least this issue you can fix with either a 3 point jig on a table top or by mounting tje fan back on the crank and putting a dial indicator in the vee of the pulley and slowly rotating it and tapping it into place with the bolts slightly tight....until it's "0'd" and then tighten the bolts. Not hard.....just tedious.
2. The other problem is that almost all of the pulley rings have a balance weight crimped onto the edge. Some have more than one.
If you are not careful to mark where the balance weight is relative to a mark on the aluminun fan ring....or to the 0 mark....whichever you want to do....it can be out of balance.
This is what has happened here.
I looked at three of my fans today. One is 411/412/914 and two were bus fans.
The 411/412/914 fan .....has the stamped 0 on the aluminum fan section. We will call that 12 o'clock.
It also happens to have a bus timing mark on the pulley. That shows up right at 11 o'clock. Maybe 10:30...relative to the normal 411/412 "0" mark.
The balance weight shows up right between 8 and 9 o'clock positions.
On the other two fans (the bus fans).....both have a bus timing notch on the pulley that is at about 10:30 relative to where the 0 would be at 12 o'clock on the 411/412 fan. One of them ALSO has a stamped 0 like a type 4 car (so in that respect it's not much different than the first fan except the first fan was 100% known to come from a 411/412).
The balance weight appears right at 10:30 on both bus fans.....but one of the two also has a second timing notch on the pulley that is 180° from the first timing notch (appearing down around 4:30) .....and it also has a second larger weight. 180° from the other balance weight.
So it looks like one has been rebalanced. So it's inconclusive whether there is a common weight position.
I will post pics later.
Ray |
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heimlich 
VWNOS.com
Joined: November 20, 2016
Posts: 7432
Location: Houston, Texas
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| Posted: Sun May 18, 2025 6:57 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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I would think you can rebalance it. Maybe put it in a tire balancing machine.
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Not all parts are made the same. NOS OE/OEM parts made mainly in West Germany, Early Germany, and Early Brazil are where VW produced the best quality parts and best fitting products.
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Sun May 18, 2025 6:08 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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| heimlich wrote: |
| raygreenwood wrote: |
| Jeremiah Berger wrote: |
Well unfortunately I made the mistake of not only taking my fan apart but also not marking it for orientation for reassembling.
I originally thought it had no orientation because the timing mark was not on the pulley like a bus. I then noticed before assembling that there was a weight embedded in the edge of the pulley, obviously balanced from the factory.
Then I went on here and read that not only is it balanced that it shouldn't be taken apart because it has to be recentered/ trued when put back together
Even if I can figure out the trueing part, am I screwed on the balance weight orientation? Or is there by some miracle chance they where all oriented a certain way to compensate for the fan hub eccentricity?
Any help is greatly appreciated like usual. I guess it's better finding out now then later... |
So....a couple of things I can do.
1. I have a stack of about 6 fans and I can check and see if there is any similarity in weight position.
2. But.....even though our timing marks are on the aluminum part...sometimes there is a notch or punch mark that is on the pulley that either marks TDC corresponding to the aluminum fan or to a bus timing scale.
3. Check this out. Once you find the orientation it's not that hard for bolt it onto the end of the crank and work with a dial indicator to recenter the fan.
https://www.thesamba.com/vw/forum/viewtopic.php?t=693897&highlight=fan+alignment
Ray |
Looks like you have a key on that 3 bolt part. Does that key align with TDC? Whatever it aligns to you can then use geometry to find the angles you need. Type 1 does something similar. Someone made a geometry wheel to overlay onto the pulley belt that bolts to the crank. |
The three bolt "hub" is not the issue.
The fan is seperate from that and is made from TWO pieces.
1. The cast aluminum fan with the blades that bolts to that 3-bolt hub
2. The steel fan belt pulley ring that bolts to the case aluminum fan with 4 "through bolts".
The problem is that the fan ring was unbolted from the aluminum fan section. This causes 2 problems:
1. The four fan ring through bolts are not in precision holes. So if you loosen these four bolts so that the pulley ring is loose or remove the pulley ring altogether.....it will not SIMPLY go back on concentric to the cast aluminum fan section. This means that the pulley will wobble so hard it typically throws a belt in seconds.
At least this issue you can fix with either a 3 point jig on a table top or by mounting tje fan back on the crank and putting a dial indicator in the vee of the pulley and slowly rotating it and tapping it into place with the bolts slightly tight....until it's "0'd" and then tighten the bolts. Not hard.....just tedious.
2. The other problem is that almost all of the pulley rings have a balance weight crimped onto the edge. Some have more than one.
If you are not careful to mark where the balance weight is relative to a mark on the aluminun fan ring....or to the 0 mark....whichever you want to do....it can be out of balance.
This is what has happened here.
I looked at three of my fans today. One is 411/412/914 and two were bus fans.
The 411/412/914 fan .....has the stamped 0 on the aluminum fan section. We will call that 12 o'clock.
It also happens to have a bus timing mark on the pulley. That shows up right at 11 o'clock. Maybe 10:30...relative to the normal 411/412 "0" mark.
The balance weight shows up right between 8 and 9 o'clock positions.
On the other two fans (the bus fans).....both have a bus timing notch on the pulley that is at about 10:30 relative to where the 0 would be at 12 o'clock on the 411/412 fan. One of them ALSO has a stamped 0 like a type 4 car (so in that respect it's not much different than the first fan except the first fan was 100% known to come from a 411/412).
The balance weight appears right at 10:30 on both bus fans.....but one of the two also has a second timing notch on the pulley that is 180° from the first timing notch (appearing down around 4:30) .....and it also has a second larger weight. 180° from the other balance weight.
So it looks like one has been rebalanced. So it's inconclusive whether there is a common weight position.
I will post pics later.
Ray |
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heimlich
VWNOS.com
Joined: November 20, 2016
Posts: 7432
Location: Houston, Texas
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| Posted: Sun May 18, 2025 8:23 am Post subject: Re: Jeremiah's 73 412 restoration project |
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| raygreenwood wrote: |
| Jeremiah Berger wrote: |
Well unfortunately I made the mistake of not only taking my fan apart but also not marking it for orientation for reassembling.
I originally thought it had no orientation because the timing mark was not on the pulley like a bus. I then noticed before assembling that there was a weight embedded in the edge of the pulley, obviously balanced from the factory.
Then I went on here and read that not only is it balanced that it shouldn't be taken apart because it has to be recentered/ trued when put back together
Even if I can figure out the trueing part, am I screwed on the balance weight orientation? Or is there by some miracle chance they where all oriented a certain way to compensate for the fan hub eccentricity?
Any help is greatly appreciated like usual. I guess it's better finding out now then later... |
So....a couple of things I can do.
1. I have a stack of about 6 fans and I can check and see if there is any similarity in weight position.
2. But.....even though our timing marks are on the aluminum part...sometimes there is a notch or punch mark that is on the pulley that either marks TDC corresponding to the aluminum fan or to a bus timing scale.
3. Check this out. Once you find the orientation it's not that hard for bolt it onto the end of the crank and work with a dial indicator to recenter the fan.
https://www.thesamba.com/vw/forum/viewtopic.php?t=693897&highlight=fan+alignment
Ray |
Looks like you have a key on that 3 bolt part. Does that key align with TDC? Whatever it aligns to you can then use geometry to find the angles you need. Type 1 does something similar. Someone made a geometry wheel to overlay onto the pulley belt that bolts to the crank.
_________________
www.vwnos.com [email protected]
Classic Brands. Classic Quality.
Not all parts are made the same. NOS OE/OEM parts made mainly in West Germany, Early Germany, and Early Brazil are where VW produced the best quality parts and best fitting products.
5% Off your order with coupon code: 5%OFF
Restored Distributors Available (<--Click here) |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Sun May 18, 2025 5:32 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Jeremiah Berger
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Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Sun May 18, 2025 5:29 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Ok, so I actually just did a deep scan on the pulley and found this VW logo stamp on the inside edge that matches up perfectly to tdc if line up in that quadrant..
So that's the mark I'm looking for right? This also puts the weight opposite of the dowel pin which is what you would expect.
Last edited by Jeremiah Berger on Sun May 18, 2025 5:33 am; edited 1 time in total |
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Jeremiah Berger
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Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Sun May 18, 2025 3:34 am Post subject: Re: Jeremiah's 73 412 restoration project |
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Thanks Ray that would be great. I sure hope they are all in the same vicinity, and it would kind of make sense that they would be.
I looked all over the pulley but I can't find any punches or markings.
I did already find that thread and read it and I could manage the trueing part by either building a jig or doing it on the case with a micrometer.
Doing on the crank seams like it could work pretty well except for having to take it on and off to tighten the bolts...but I'm thinking if I take the fan housing back off I may have room to get behind it... |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Sat May 17, 2025 6:14 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
Well unfortunately I made the mistake of not only taking my fan apart but also not marking it for orientation for reassembling.
I originally thought it had no orientation because the timing mark was not on the pulley like a bus. I then noticed before assembling that there was a weight embedded in the edge of the pulley, obviously balanced from the factory.
Then I went on here and read that not only is it balanced that it shouldn't be taken apart because it has to be recentered/ trued when put back together
Even if I can figure out the trueing part, am I screwed on the balance weight orientation? Or is there by some miracle chance they where all oriented a certain way to compensate for the fan hub eccentricity?
Any help is greatly appreciated like usual. I guess it's better finding out now then later... |
So....a couple of things I can do.
1. I have a stack of about 6 fans and I can check and see if there is any similarity in weight position.
2. But.....even though our timing marks are on the aluminum part...sometimes there is a notch or punch mark that is on the pulley that either marks TDC corresponding to the aluminum fan or to a bus timing scale.
3. Check this out. Once you find the orientation it's not that hard for bolt it onto the end of the crank and work with a dial indicator to recenter the fan.
https://www.thesamba.com/vw/forum/viewtopic.php?t=693897&highlight=fan+alignment
Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Sat May 17, 2025 2:27 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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Well unfortunately I made the mistake of not only taking my fan apart but also not marking it for orientation for reassembling.
I originally thought it had no orientation because the timing mark was not on the pulley like a bus. I then noticed before assembling that there was a weight embedded in the edge of the pulley, obviously balanced from the factory.
Then I went on here and read that not only is it balanced that it shouldn't be taken apart because it has to be recentered/ trued when put back together
Even if I can figure out the trueing part, am I screwed on the balance weight orientation? Or is there by some miracle chance they where all oriented a certain way to compensate for the fan hub eccentricity?
Any help is greatly appreciated like usual. I guess it's better finding out now then later... |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23027
Location: Oklahoma City
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| Posted: Tue May 06, 2025 6:42 pm Post subject: Re: Jeremiah's 73 412 restoration project |
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| Jeremiah Berger wrote: |
I found this vacuum kit for a 914 on auto Atlanta....is this the same or close to the same as our 412s with d jet? A bit pricey but does anyone know of anyone else?
I saw a thread where Germansupply.com was considering it but don't see it on there website...
It would be nice to be able to get them all in one place.
Or do we have a list or a thread already covering the different sizes needed?
I botched mine together before with a bunch of random stuff as close as I could get
https://www.ebay.com/itm/232088077766 |
So....for everything on top of the engine, the 914 is pretty close. There are a few differences though.
The large 12-14mm gray pipes on a 411/412 run from the charcoal canister to the cooling shroud and air cleaner. Becaue its a mid engine on the 914, those hoses are shorter.
Also, there is no automatic on the 914, so there is no odd Y on the right hand side of the engine connecting to the center manifold and then down to the automatic modulator valve. There also will not be a vacuum dashpot connection with the small red hose on a 914.
So, looking at what its missing and then looking at the price....I would say no...its not worth it.
I will have to see if I have enough of the hoses on hand (there is no engine in my car right now) to set you up on what you need. Ask those guys if they have a diagram where everything in that kit goes. Ray |
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Jeremiah Berger
Samba Member
Joined: September 16, 2018
Posts: 133
Location: MAINE
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| Posted: Mon May 05, 2025 9:05 am Post subject: Re: Jeremiah's 73 412 restoration project |
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I found this vacuum kit for a 914 on auto Atlanta....is this the same or close to the same as our 412s with d jet? A bit pricey but does anyone know of anyone else?
I saw a thread where Germansupply.com was considering it but don't see it on there website...
It would be nice to be able to get them all in one place.
Or do we have a list or a thread already covering the different sizes needed?
I botched mine together before with a bunch of random stuff as close as I could get
https://www.ebay.com/itm/232088077766 |
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