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Discussion Starter · #1 ·
I knew these were on the way out, but after conferring with other people it was assumed that the bush failure was perhaps due to failed hydraulic mounts. Not so ..

While the car was at Highgate to have the oil leak fixed, I asked them to check out the bottom mounts. On inspection these appear to be OK, so the jarring engine movements during throttle lift and clutching are due to the torque arm bush failure.





As you can see the front bush has split right the way through. Whats the recommendation then folks; replace both in poly or replace one with a standard rubber item?
 

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I remember hearing somewhere in my dim & distant past the recomendations were to replace both with poly on a manual,but on auto's keep one of them std rubber,the other could be a poly type.
G.
 

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I did both mine in poly (they were in the same state as yours) and only notice extra vibration at idle when the ACC kicks in n v. hot days. But I know a lot of people say there's too much vibration with both done. I guess it depends on the stiffness of your suspension and how much poly you've got elsewhere on the car .
 

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Discussion Starter · #4 ·
I guess it depends on the stiffness of your suspension and how much poly you've got elsewhere on the car .  [/b]
I don't have any poly on at present, the shocks and springs are standard although the shocks are pretty firm. I WILL be getting the car lowered pretty shortly though, without koni's I know that the ride quality will take quite a hit.
 

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If my Aero were ready (which unfortunately it won't be), I'd give you a ride in it on Sunday, Jason. That would give you an idea of how it feels with both replaced with poly. It depends on what you are prepared to put up with, but of course you don't know what you'll have to put up with until you try it.

I'd say replace the front one with poly as it badly needs replacing. The rear one is not such a big job and can be done later. Perhaps by that time you'll have had the chance to see a car that has had both done and decide whether you want rubber or poly.
 

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dead easy
you do need a vice and some large sockets to push the new one in..
did this last week it took me about an hour ..which included rubbing down and laquering the arm !!
the vice is usefull for mangling the old bush out once you have cut the rubber away
I did not think it increased the vibration very much
however now that most of my bushes are poly now I can feel some tingles thro' the pedal oooeeerrrr
 

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Discussion Starter · #10 ·
Here's what I went for in the end, I took the car to West Midlands Saab Specialists to have poly bushes in both the front and back of the arm. It has to be said, that although I was prepared to live with it tickover and hill starts resulted in a LOT of vibration through the steering. So I followed the advice they gave me and put a standard bush in the rear of the arm, which provides a good compromise; improved power transmission and only a slight increase in vibration.

 

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Discussion Starter · #13 ·
Originally posted by Adrian:
[qb]Nice Jason, but I think that you need to take note from ylee - get that arm polished    [/qb][/b]
That arm was a swap, my original was slightly less corroded but since the poly bushes are nigh impossible to "uninstall" without damaging them, the new rubber bush went in a spare arm instead. I will polish it when I can be arsed.
 
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