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VW2024
Samba Member
Joined: September 04, 2024
Posts: 4
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 Posted: Thu May 29, 2025 6:05 pm Post subject: Trans whine coasting |
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57bug. New to me today
PO installed 1641DP 12v and
Freeway flyer May’21
Used original (57?) axle tubes (assume axles) per receipt
Whines all gears off power-coasting
Looking for advice.
Do 57 axles match up to later trans?
Trans issue?
TIA! |
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esde
Samba Member
Joined: October 20, 2007
Posts: 6320
Location: central rust belt
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| Posted: Thu May 29, 2025 9:40 pm Post subject: Re: Trans whine coasting |
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I assume it's a later tunnel style transmission, and not the earlier split case trans..
whines in all gears huh?
Does it whine in neutral coasting?
My first and second guess would be something is wrong with the ring and pinion
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VW_Jimbo 
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Joined: May 22, 2016
Posts: 11122
Location: Huntington Beach, CA
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| Posted: Thu May 29, 2025 10:13 pm Post subject: Re: Trans whine coasting |
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What happens when coasting in neutral, clutch not engaged?
Is one side louder than the other? During turns?
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Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
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wagen19
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Joined: November 16, 2007
Posts: 651
Location: germany
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| Posted: Thu May 29, 2025 10:28 pm Post subject: Re: Trans whine coasting |
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| esde wrote: |
I assume it's a later tunnel style transmission, and not the earlier split case trans..
whines in all gears huh?
Does it whine in neutral coasting?
My first and second guess would be something is wrong with the ring and pinion |
Check your rear brake drums and 36 mm nuts first. It´s quite possible, the drive shaft turns "free" inside one drum. (had that several times, when teething inside drums has wear, or nuts were not tighten properly)
With luck, it´s only one brake drum to replace, but the splines of drive shaft may also be damaged. Is there oil around the 36 mm nut? Are the nuts loose?
If a drum sits loose on drive shaft, you allways will get problems, even with 36 mm nuts torqued very properly! (overtorqued)
If not, think about a clutch issue. |
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Bub
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Joined: June 10, 2004
Posts: 1293
Location: Central Washington
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| Posted: Fri May 30, 2025 7:27 am Post subject: Re: Trans whine coasting |
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Check the gear oil obviously, but beyond that sounds like worn differential or incorrect backlash on ring/ pinion.
In 4th at regular speed going down the road if you let off the gas does it whine like that? If it does it’s worn ring gear.
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wagen19
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Joined: November 16, 2007
Posts: 651
Location: germany
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| Posted: Sat May 31, 2025 3:41 am Post subject: Re: Trans whine coasting |
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| Bub wrote: |
Check the gear oil obviously, but beyond that sounds like worn differential or incorrect backlash on ring/ pinion.
In 4th at regular speed going down the road if you let off the gas does it whine like that? If it does it’s worn ring gear. |
You may be right.
But as long as we don´t know what kind of trans, split case or tunnel case is installed, imo it´s easier to remove just the wheel caps first, before inspecting the oil or the trans itself.
The main question in this stage is, is the issue inside or outside of the trans.
More input or response would be interesting. |
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VW2024
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Joined: September 04, 2024
Posts: 4
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| Posted: Sat May 31, 2025 5:54 am Post subject: Re: Trans whine coasting |
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Sorry for the delay in responding to all the responses.
Finally had good weather to drive again
Whines in all gears and in neutral
Louder coasting than under load
No change turning side to side
Tunnel trans
Very slight leak at axle tubes to tunnel connection left side
1 drop on left side outer
4 wheel Wilwood discs installed when engine and transmission were installed 5/21
Rear axle seals replaced 4/24 prior to being listed for sale. Minimum miles from then until I purchased 5/25. 1 drop may be residual from axles replacement.
Will be watching closely as it’s driven more. |
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VW_Jimbo
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Joined: May 22, 2016
Posts: 11122
Location: Huntington Beach, CA
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| Posted: Sat May 31, 2025 7:31 am Post subject: Re: Trans whine coasting |
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| VW2024 wrote: |
Sorry for the delay in responding to all the responses.
Finally had good weather to drive again
Whines in all gears and in neutral
Louder coasting than under load
No change turning side to side
Tunnel trans
Very slight leak at axle tubes to tunnel connection left side
1 drop on left side outer
4 wheel Wilwood discs installed when engine and transmission were installed 5/21
Rear axle seals replaced 4/24 prior to being listed for sale. Minimum miles from then until I purchased 5/25. 1 drop may be residual from axles replacement.
Will be watching closely as it’s driven more. |
Whines in neutral. Sitting still or moving? Clutch in or out?
_________________
Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
| 67rustavenger wrote: |
| GFY's Xevin and VW_Jimbo! |
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esde
Samba Member
Joined: October 20, 2007
Posts: 6320
Location: central rust belt
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| Posted: Sat May 31, 2025 9:13 am Post subject: Re: Trans whine coasting |
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If it only happens when moving, it's most likely the ring and pinion.
There are a lot of shops using marginal parts on rebuilds, or maybe some wear was missed. Once when I was at Steedles shop getting advice on how to modify some gear hubs, he pointed out wear on the gears that I didn't know how to identify, and that led to a short course on inspecting gear teeth. What I learned, in short is that clean and shiny is not always good to use.
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modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
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VW2024
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Joined: September 04, 2024
Posts: 4
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| Posted: Sat May 31, 2025 11:45 am Post subject: Re: Trans whine coasting |
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Only when moving
Much louder coasting in or out of gear than while accelerating |
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VW_Jimbo
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Joined: May 22, 2016
Posts: 11122
Location: Huntington Beach, CA
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| Posted: Sat May 31, 2025 11:00 pm Post subject: Re: Trans whine coasting |
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Sounds like the carrier bearings. Time to rebuild it!
_________________
Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
| 67rustavenger wrote: |
| GFY's Xevin and VW_Jimbo! |
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VW2024
Samba Member
Joined: September 04, 2024
Posts: 4
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| Posted: Sun Jun 01, 2025 5:37 am Post subject: Re: Trans whine coasting |
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Thanks all for the help and advice!
Recommend a trans rebuilder?
Top 3?
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VW_Jimbo
Samba Member
Joined: May 22, 2016
Posts: 11122
Location: Huntington Beach, CA
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| Posted: Sun Jun 01, 2025 8:41 am Post subject: Re: Trans whine coasting |
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I HIGHLY recommend Scott Sebastian at MCM. The shop is located in Sanger, California. He allows me to visit the shop and build along side him. When I helped rebuild the 54’s trans with his expertise in January this year. It’s is in my build thread. It is page 95, I think.
His info is, Metal Craft Motorsports, 559-313-3301.
Good luck and tell Scott "Jim says hi!"
_________________
Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
| 67rustavenger wrote: |
| GFY's Xevin and VW_Jimbo! |
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esde
Samba Member
Joined: October 20, 2007
Posts: 6320
Location: central rust belt
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| Posted: Sun Jun 01, 2025 3:45 pm Post subject: Re: Trans whine coasting |
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Scott X's 2. The man really knows his stuff. If you're on the east coast, then Matt Steedle, PM for contact if needed..
_________________
modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
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