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Kiwi1966
Samba Member
Joined: August 18, 2009
Posts: 168
Location: Ohoka New Zealand
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 Posted: Sun Dec 23, 2018 4:17 am Post subject: Thermostat rod correct hole |
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Hi
Trial fitting my tinwear on new 1776 before I paint tinwear.Having problem with thermostat rod hole. Put rod thru yellow hole first which is the wrong hole.Doing this ofsets the rod 20 mm away from the thermostat bracket. The rod from memory from other motors should go thru where I have circled in red in the second photo,but there are two fins cast in the way.( not mold flashing) .Thoughts please on fileing to remove offending fins or modify rod / thermo bracket to get things to line up- heads are L3,s ftom Aircooled .net Cheers
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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Sun Dec 23, 2018 5:44 am Post subject: Re: Thermostat rod correct hole |
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| Are you sure it's the right way 'round in the shroud? |
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runamoc 
Samba Member
Joined: June 19, 2006
Posts: 5601
Location: 37.5N 77.1W
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| Posted: Sun Dec 23, 2018 7:39 am Post subject: Re: Thermostat rod correct hole |
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Take a coat hanger and stick it through one of the two cylinder holes at a time and see which hole is a straight 'line' to the top of the thermostat holder. 
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APPLEGREENVW
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Joined: November 30, 2003
Posts: 2388
Location: Seekonk,Massachusetts USA
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APPLEGREENVW
Samba Member
Joined: November 30, 2003
Posts: 2388
Location: Seekonk,Massachusetts USA
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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Sun Dec 23, 2018 8:38 am Post subject: Re: Thermostat rod correct hole |
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Good catch, AppleGreen.
I never even noticed there was a difference. Duh! |
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Kiwi1966
Samba Member
Joined: August 18, 2009
Posts: 168
Location: Ohoka New Zealand
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| Posted: Sun Dec 23, 2018 12:23 pm Post subject: Re: Thermostat rod correct hole |
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Thanks for the reply guys - I will track down correct bracket, looks like the rod should go thru the hole in red to line up correctly but gap between fins is same as diameter of rod . Will have to make hole larger by removing the two small fins-thoughts
You can see in this photo borrowed from another page the hole closest to the case side of head is the correct size |
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runamoc
Samba Member
Joined: June 19, 2006
Posts: 5601
Location: 37.5N 77.1W
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| Posted: Sun Dec 23, 2018 3:32 pm Post subject: Re: Thermostat rod correct hole |
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| Quote: |
| removing the two small fins-thoughts |
Just drill a bigger hole 
_________________
Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires |
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Kiwi1966
Samba Member
Joined: August 18, 2009
Posts: 168
Location: Ohoka New Zealand
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| Posted: Mon Dec 24, 2018 5:54 pm Post subject: Re: Thermostat rod correct hole |
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Merry Xmas - all sorted round and square file , just need to sort bracket
Before
After
Thanks for the advice |
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nextgen
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Joined: August 19, 2004
Posts: 6028
Location: CONGERS, N.Y.
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klcarrie
Samba Member
Joined: March 28, 2012
Posts: 288
Location: 'berta!
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| Posted: Wed Jul 21, 2021 8:57 pm Post subject: Re: Thermostat rod correct hole |
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Tackling similar in my Scat 1600 crate engine. Purchased from cip1.ca in 2016.
Flash images are from 3-4 head, but I’m filing hole in 1-2 head.
Pain in the you know what.
Glad I’m not broken down 2000 mi from home, and putting a new crate in my bus again.
Enjoy.
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RWK
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Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Fri Jul 23, 2021 6:20 am Post subject: Re: Thermostat rod correct hole |
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Going thru the same rod fitting problem also, customers engine has big valve CB heads, I suggested going back to stock heads, regardless, I don't know how any of the aftermarket heads cool properly, pics are AFTER I cleaned the holes out, and a lot of grinding to make rod deflector plates fit.
Mocking up engine reassemble (cylinder and heads) before final, had top end apart for check for overheating problems, several contributing issues besides heads.
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runamoc
Samba Member
Joined: June 19, 2006
Posts: 5601
Location: 37.5N 77.1W
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| Posted: Fri Jul 23, 2021 8:10 am Post subject: Re: Thermostat rod correct hole |
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| Quote: |
| lot of grinding to make rod deflector plates fit. |
any photos of where to grind to get them to fit?
_________________
Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires |
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RWK
Samba Member
Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Fri Jul 23, 2021 9:43 am Post subject: Re: Thermostat rod correct hole |
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Yea, later, lots of pics of stuff that don't fit, fighting an aftermarket alternator stand now 
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clonebug
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Joined: January 29, 2005
Posts: 4027
Location: NW Washington
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| Posted: Fri Jul 23, 2021 10:57 am Post subject: Re: Thermostat rod correct hole |
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| RWK wrote: |
| Yea, later, lots of pics of stuff that don't fit, fighting an aftermarket alternator stand now |
CB carries the Mexican Alt stand...o-ring seal to the case and a plastic filler that will never rust out. If you leave it stock it's great....don't think you can add an extended filler to it since it doesn't have threads in the top anymore.
I really like mine...it's been on there for at least 5 years. The alt bracket is easier to put on too.
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http://www.shoptalkforums.com/viewtopic.php?f=3&t=127936 |
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RWK
Samba Member
Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Fri Jul 23, 2021 5:02 pm Post subject: Re: Thermostat rod correct hole |
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| runamoc wrote: |
| Quote: |
| lot of grinding to make rod deflector plates fit. |
any photos of where to grind to get them to fit? |
Here's what I did, just lay plate in and see what needs to come out, my tab's wouldn't engage, black is where stock was removed, basically just squared out the corner where the plate is supposed to set, fins that I didn't touch are flawed IMHO, the castings are what we call "short" many area's in these heads that way.
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RWK
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Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Fri Jul 23, 2021 5:26 pm Post subject: Re: Thermostat rod correct hole |
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And now for the Alt. stand, engine came in with one where the alt. bosses were setting on the casting, holding it up .06-.10 off the cradle part. Not wanting to give up one of my OG towers I found another A.M. one I had, it cleared but was .06 too tall! Milled it down, kept my OG one! you can see in pic it's thicker on the base!
Alt. cocked at least .06-.1 up due to interference, here
Older 90's stand cleared alt. but .06 too tall
Stock OE stand
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5481
Location: Seattle
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| Posted: Sat Jul 24, 2021 7:59 am Post subject: Re: Thermostat rod correct hole |
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This seems like the appropriate thread for this as it is about setting up the air cooling system like VW intended. I'm just borrowing the image for a question.
VW included a rear air deflector plates that bolted to the cylinder tin to extend it down to increase coverage for cylinders 2 and 4. Why does this tin extend under the exhaust port? As the picture clearly shows there is no way for air to flow down there as the exhaust port is blocking the fins. The small area where air can flow through is well forward of the tin.
Those wings under the exhaust ports are sometimes removed when aftermarket cylinder tins are used. It seems most aftermarket cylinder tins end earlier than the stock VW ones so the deflector plates end up being installed a little higher on the engine than stock. That also suggests that aftermarket cylinder tins may be a problem for the stock breast plate fit.
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nsracing
Samba Member
Joined: November 16, 2003
Posts: 9467
Location: NOVA
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| Posted: Sat Jul 24, 2021 8:22 am Post subject: Re: Thermostat rod correct hole |
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Gotta make sure you are putting it in right hole.  |
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evanfrucht
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Joined: July 24, 2016
Posts: 2180
Location: Laurel Canyon, CA
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| Posted: Sat Jul 24, 2021 9:56 am Post subject: Re: Thermostat rod correct hole |
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| Kiwi1966 wrote: |
| but there are two fins cast in the way.( not mold flashing) .Thoughts please on fileing to remove offending fins. |
That is in fact extra material leftover from the molding, NOT fins that were put there purposely... so yes you did the right thing. Drill bits also work.
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