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Fitting 'competition engine/box mounts'

911hillclimber

PCGB Member
Member
After getting the Bitza 911 on the hills again, it became instantly apparent that dumping the clutch at 5000 rpm on the start nearly shakes the whole engine and gearbox clean out of the car....all rather like a Morris Minor with severe axle tramp.

After a quick surf on google and ebay, a solution was readily found in some polyurethane hard bushes that replace the bouncy rubber doughnuts that are stock 911.

Payment paid ( www.priracing.com ) for £75.89 and the kit arrived in 2 days! [:)]

Just popped them into 4 spare mounts I had (dated 1973) and the fitment took all of 1.5 hours (bit dissapointed at that, getting old now!), and after a good pop down some local rough and smoooooth roads, all is well.

Surprisingly, I can detect no increase in NVH at all, but the whole car is a bit 'NVH' mega star tbh.
Pleasingly, I can certainly detect a far far sharper gear change and zero banging/jumping on the hard start I tried in privacy, but a hillclimb start is nothing like a road surface.[8|]

Only allowed one pic, so here is a group shot of the whole kaboodle:



E9BF4AC414B94A0797C48FD7454B8FCB.jpg
 
Excellent. They look good. I was just about to order some 100% solid metal mounts but having seen these they may be a better way of doing it.

You can be our test chassis for the season. Let's see how they hold up to your abuse :- )

Ian.
 
Bit of an update:

Raced hard at Prescott this weekend, in toatal12 hard drag starts and these mounts simple are fantastic. Absolutly zero judder, hard launches and super smooth almost un bulked gearchanges, and I have a 915 box!

If you are racing an early 911 you need these.
 

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