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Message |
OhHerrooo
Samba Member
Joined: September 12, 2010
Posts: 1291
Location: Costa Mesa, CA
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 Posted: Wed Aug 26, 2020 3:16 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| Tram wrote: |
| OhHerrooo wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
Here's a video w/sound of the noise I'm hearing. Happens both when car is in or and out of gear, can be heard on deceleration. Fan is tight. Going to change transaxle oil this week too.
https://imgur.com/Wg868DR |
I have seen fan housing bolts (the ones that bolt the front half to the engine case) back out and rub the fan making similar noises. A loose fan is more of a knock/ bang. |
Would I need to take the black fan shroud off to get to those? |
Yes- that and the fan. Again, this is a guess, but if the noise is coming from the fan housing area and the fan isn't loose, you need to get to the bottom of what is going on. |
Gotcha. Yeah I took the belt off and revved it and the sound persisted, so ruled out the generator, belt tension, etc. Hoping I don't have to have someone dig that deep into the motor to fix it.
_________________
'67 Squareback
'69 Squareback
'68 Westfalia
'68 Squareback
OCT3 - Orange County Type 3's
www.evenkeelsurfshapes.com |
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22431
Location: Kimball, Mi
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| Posted: Wed Aug 26, 2020 3:31 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| Tram wrote: |
| OhHerrooo wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
Here's a video w/sound of the noise I'm hearing. Happens both when car is in or and out of gear, can be heard on deceleration. Fan is tight. Going to change transaxle oil this week too.
https://imgur.com/Wg868DR |
I have seen fan housing bolts (the ones that bolt the front half to the engine case) back out and rub the fan making similar noises. A loose fan is more of a knock/ bang. |
Would I need to take the black fan shroud off to get to those? |
Yes- that and the fan. Again, this is a guess, but if the noise is coming from the fan housing area and the fan isn't loose, you need to get to the bottom of what is going on. |
Since you'll be taking the gen off anyway, remove the belt first, and see if it gets quiet. If it does, then it's generator bearings. If not, do as Tram said and start removing the cooling fan shroud and fan, so you can get to the front half screws. I use blue loctite on those screws now after having 2 come loose behind the fan. They are known for coming loose, and I've even seen the screw pockets filled with silicone just to keep them from turning. If you can, use a 6mm flat bottoming tap in the holes, and slightly longer screws, as you'll get fresh tighter threads to bite in with, along with some blue loctite. It's mainly the 2 directly behind the fan that work loose.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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OhHerrooo
Samba Member
Joined: September 12, 2010
Posts: 1291
Location: Costa Mesa, CA
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| Posted: Wed Aug 26, 2020 3:37 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| Bobnotch wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
Here's a video w/sound of the noise I'm hearing. Happens both when car is in or and out of gear, can be heard on deceleration. Fan is tight. Going to change transaxle oil this week too.
https://imgur.com/Wg868DR |
I have seen fan housing bolts (the ones that bolt the front half to the engine case) back out and rub the fan making similar noises. A loose fan is more of a knock/ bang. |
Would I need to take the black fan shroud off to get to those? |
Yes- that and the fan. Again, this is a guess, but if the noise is coming from the fan housing area and the fan isn't loose, you need to get to the bottom of what is going on. |
Since you'll be taking the gen off anyway, remove the belt first, and see if it gets quiet. If it does, then it's generator bearings. If not, do as Tram said and start removing the cooling fan shroud and fan, so you can get to the front half screws. I use blue loctite on those screws now after having 2 come loose behind the fan. They are known for coming loose, and I've even seen the screw pockets filled with silicone just to keep them from turning. If you can, use a 6mm flat bottoming tap in the holes, and slightly longer screws, as you'll get fresh tighter threads to bite in with, along with some blue loctite. It's mainly the 2 directly behind the fan that work loose. |
Yep, I removed the belt entirely and the sound persisted, both with the clutch in and clutch out. The car has DRLA 36s, and Erik thinks it might just be the carbs? I can't recall the car always sounding like this with the dells, but it's been a while.
_________________
'67 Squareback
'69 Squareback
'68 Westfalia
'68 Squareback
OCT3 - Orange County Type 3's
www.evenkeelsurfshapes.com |
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22431
Location: Kimball, Mi
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| Posted: Wed Aug 26, 2020 4:05 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| OhHerrooo wrote: |
| Bobnotch wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
Here's a video w/sound of the noise I'm hearing. Happens both when car is in or and out of gear, can be heard on deceleration. Fan is tight. Going to change transaxle oil this week too.
https://imgur.com/Wg868DR |
I have seen fan housing bolts (the ones that bolt the front half to the engine case) back out and rub the fan making similar noises. A loose fan is more of a knock/ bang. |
Would I need to take the black fan shroud off to get to those? |
Yes- that and the fan. Again, this is a guess, but if the noise is coming from the fan housing area and the fan isn't loose, you need to get to the bottom of what is going on. |
Since you'll be taking the gen off anyway, remove the belt first, and see if it gets quiet. If it does, then it's generator bearings. If not, do as Tram said and start removing the cooling fan shroud and fan, so you can get to the front half screws. I use blue loctite on those screws now after having 2 come loose behind the fan. They are known for coming loose, and I've even seen the screw pockets filled with silicone just to keep them from turning. If you can, use a 6mm flat bottoming tap in the holes, and slightly longer screws, as you'll get fresh tighter threads to bite in with, along with some blue loctite. It's mainly the 2 directly behind the fan that work loose. |
Yep, I removed the belt entirely and the sound persisted, both with the clutch in and clutch out. The car has DRLA 36s, and Erik thinks it might just be the carbs? I can't recall the car always sounding like this with the dells, but it's been a while. |
Yeah I missed that you had already pulled the belt. Those little screws can be a royal PIA, because they'll be fine for months or years, then 1 day decide they want to be loose. That's how it happened to me Tight for over 2 years then 1 day coming home from work, worked loose. No warning, no nothing, just rattling around.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 22728
Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Wed Aug 26, 2020 6:07 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| OhHerrooo wrote: |
| Bobnotch wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
| Tram wrote: |
| OhHerrooo wrote: |
Here's a video w/sound of the noise I'm hearing. Happens both when car is in or and out of gear, can be heard on deceleration. Fan is tight. Going to change transaxle oil this week too.
https://imgur.com/Wg868DR |
I have seen fan housing bolts (the ones that bolt the front half to the engine case) back out and rub the fan making similar noises. A loose fan is more of a knock/ bang. |
Would I need to take the black fan shroud off to get to those? |
Yes- that and the fan. Again, this is a guess, but if the noise is coming from the fan housing area and the fan isn't loose, you need to get to the bottom of what is going on. |
Since you'll be taking the gen off anyway, remove the belt first, and see if it gets quiet. If it does, then it's generator bearings. If not, do as Tram said and start removing the cooling fan shroud and fan, so you can get to the front half screws. I use blue loctite on those screws now after having 2 come loose behind the fan. They are known for coming loose, and I've even seen the screw pockets filled with silicone just to keep them from turning. If you can, use a 6mm flat bottoming tap in the holes, and slightly longer screws, as you'll get fresh tighter threads to bite in with, along with some blue loctite. It's mainly the 2 directly behind the fan that work loose. |
Yep, I removed the belt entirely and the sound persisted, both with the clutch in and clutch out. The car has DRLA 36s, and Erik thinks it might just be the carbs? I can't recall the car always sounding like this with the dells, but it's been a while. |
I've never heard carbs make a noise like that- nor am I sure it's even possible, but then, absolutely nothing surprises me with aftermarket parts any more.
I'd think if it WERE a noise coming from the carbs it would be easy to tell with the air cleaners removed.
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
To best contact me, please use the EMAIL function in my profile |
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TommyBoyGomes
Samba Member
Joined: May 28, 2005
Posts: 1531
Location: L.A./Dublin, Irl
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| Posted: Wed Aug 26, 2020 6:37 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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Hey Steve,
Just listened to your video. Not sure I'm hearing a sustained whirring, but I do hear a vibration as the RPM's are coming down for about a half-second. Is that what you're referring to?
To me, it sounds like cooling tin vibration that is vibrating sympathetically with the engine at certain RPM's. Take a look around at your cooling tin (especially the tin on the underside by the pushrods) to make sure you didn't lose a screw. That could result in the tin flapping against the case and causing that vibration noise.
-T
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1969 Squareback, 1776cc
1990 Vanagon Multivan |
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OhHerrooo
Samba Member
Joined: September 12, 2010
Posts: 1291
Location: Costa Mesa, CA
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| Posted: Wed Aug 26, 2020 7:08 pm Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| TommyBoyGomes wrote: |
Hey Steve,
Just listened to your video. Not sure I'm hearing a sustained whirring, but I do hear a vibration as the RPM's are coming down for about a half-second. Is that what you're referring to?
To me, it sounds like cooling tin vibration that is vibrating sympathetically with the engine at certain RPM's. Take a look around at your cooling tin (especially the tin on the underside by the pushrods) to make sure you didn't lose a screw. That could result in the tin flapping against the case and causing that vibration noise.
-T |
Yep, that's the sound. Vibration / whirring as RPMs are coming down just for a quick second.
When at those RPMs (i.e. cruising in third and letting off throttle) the noise will be persistent. I can try to get my wife to get a video of it while driving.
_________________
'67 Squareback
'69 Squareback
'68 Westfalia
'68 Squareback
OCT3 - Orange County Type 3's
www.evenkeelsurfshapes.com |
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Big Bill
Samba Member
Joined: June 21, 2005
Posts: 1782
Location: Santa Rosa, Ca
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| Posted: Thu Aug 27, 2020 7:32 am Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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| I wonder if it could be the Through Out bearing for the clutch? I am not familiar with T3 engines at all but had a similar noise on a t1 engine before. It made a whirring noise with the clutch pedal in and out. |
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OhHerrooo
Samba Member
Joined: September 12, 2010
Posts: 1291
Location: Costa Mesa, CA
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7549
Location: Santa Cruz
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| Posted: Fri Oct 23, 2020 9:27 am Post subject: Re: OhHerrooo's Pearl White 1967 Squareback |
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Wow. Beastly fix needed.
Glad you got clear in and did it (at least now that it's done  )
What has been happening is the cam blanks are either porous, have sharp edges at the thrust, or are rough from heat treating/parkerizing..
Trick to long life is to take and polish the thrust faces and edges down with emery cloth or wet/dry up through the grits.
Cam bearings are starting to get wonky from the manufacturers as well..
But,
I'm sure you know all of that now.
Let's see some pics of the thing out and about!
Love to see pics of these cars out being run and enjoyed.
Especially a '67...
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Bus Motor Build
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