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Technical => Chassis & Suspension Forum => Topic started by: Chris E. on October 07, 2006, 05:01:51 PM

Title: Noisy Torsion Bars
Post by: Chris E. on October 07, 2006, 05:01:51 PM
The rear torsion bars on my 64 bug are extremely noisy (squeaky) when driving, and going over any size of bump. I don't think it is the spring plate bushings because they are urethane and greased.

What could the problem be and how do I go about fixing it? :blink:  
Title: Noisy Torsion Bars
Post by: silas on October 07, 2006, 05:26:57 PM
my money is on the urethane bushings. afaik, they are notoriously squeaky

are you sure the noise is coming from the torsion bars tho? can you get someone to \"bounce\" the suspension while you try & pinpoint exactly where the noise is coming from.

 
Title: Noisy Torsion Bars
Post by: Chris on October 07, 2006, 07:01:16 PM
have you checked your torsion oil level?
Title: Noisy Torsion Bars
Post by: Bruce on October 07, 2006, 08:01:23 PM
When you installed the urethane bushings, did you grind them to fit the torsion housings?  If not, that is your problem.
Title: Noisy Torsion Bars
Post by: silas on October 07, 2006, 08:55:28 PM
Quote
When you installed the urethane bushings, did you grind them to fit the torsion housings?  If not, that is your problem.
good point bruce.
Title: Noisy Torsion Bars
Post by: Jeremy on October 07, 2006, 09:53:38 PM
I'm with Chris, Have you checked the torsion tube oil level?
Title: Noisy Torsion Bars
Post by: Chris E. on October 07, 2006, 11:44:02 PM
The urethane bushings were installed when I got the car. Don't know if they have been ground.
 
Where do they need to be ground?

The torsion oil level????????

I'm just back in this hobby after about a 10 year absence. Thanks for the help.
Title: Noisy Torsion Bars
Post by: silas on October 08, 2006, 01:19:19 AM
Quote
The urethane bushings were installed when I got the car. Don't know if they have been ground.
Where do they need to be ground?
i have found that the outside diameter of the bushing needs to be ground down a little to fit in the torsion tube.

Quote
How do I check the torsion tube oil level?.
you get brodie to insert his small, pointy dipstick into 1976bus' rectum. if there are chunks of corn, the level is ok. bits of grass are bad. :o

there is no torsion tube oil.
Title: Noisy Torsion Bars
Post by: Chris E. on October 08, 2006, 02:32:47 AM
Quote

there is no torsion tube oil.
When I read that, I was like WTF? Should have known better.
Title: Noisy Torsion Bars
Post by: Chris on October 08, 2006, 09:08:30 AM
Quote
Quote
The urethane bushings were installed when I got the car. Don't know if they have been ground.
Where do they need to be ground?
i have found that the outside diameter of the bushing needs to be ground down a little to fit in the torsion tube.


you get brodie to insert his small, pointy dipstick into 1976bus' rectum. if there are chunks of corn, the level is ok. bits of grass are bad. :o

there is no torsion tube oil.
your sick silas.
Title: Noisy Torsion Bars
Post by: Jeremy on October 08, 2006, 09:19:39 AM
Quote

you get brodie to insert his small, pointy dipstick into 1976bus' rectum. if there are chunks of corn, the level is ok. bits of grass are bad. :o

 
Yuck!!! :blink:  
Title: Noisy Torsion Bars
Post by: Tom H. on October 08, 2006, 09:59:21 AM
Quote
Quote
Quote
The urethane bushings were installed when I got the car. Don't know if they have been ground.
Where do they need to be ground?
i have found that the outside diameter of the bushing needs to be ground down a little to fit in the torsion tube.


you get brodie to insert his small, pointy dipstick into 1976bus' rectum. if there are chunks of corn, the level is ok. bits of grass are bad. :o

there is no torsion tube oil.
your sick silas.
your right, no oil as it uses GREASE!
Title: Noisy Torsion Bars
Post by: Bruce on October 08, 2006, 02:26:35 PM
Quote

Where do they need to be ground?

 
Likely they weren't installe correctly.  Every set must be ground for a custom fit.

What you have to do is take everything apart and remove the torsion bar.  Reassemble everything and move the spring plate up and down.  If it moves freely, you are done.  Most likely, the urethane grommets will be compressed so much that you won't be able to move the spring plate.  Take everything apart and start grinding to fit the grommets better into the cast torsion housing.   The first one will take twice as long as the second one.
Title: Noisy Torsion Bars
Post by: silas on October 10, 2006, 06:50:53 PM
Quote
your sick silas.
you're right. :lol:  
Title: Noisy Torsion Bars
Post by: Chris E. on October 11, 2006, 02:59:13 PM
Quote
When you installed the urethane bushings, did you grind them to fit the torsion housings?  If not, that is your problem.
Hey Bruce, you were right on the money! I ground down my bushings for a better fit, and the noise is gone.

Thanks.