Perished rubber bush replacement sequence

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M7KYD
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Joined: Thu Feb 27, 2020 1:16 pm

Perished rubber bush replacement sequence

Post by M7KYD »

Hi now that my 911TV 73 is finally on the road the solid old rubber bushes need replacing.
My question is
Is there a sequence of which to replace first.
Which bushes have the most benefit when changed to new.
Which are the easy ones and which hard to replace.
Many thanks

Oh yes this is the car that nearly caught fire with the oil INSIDE the heat exchanger lol. Now SSI welded.
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Nige
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Re: Perished rubber bush replacement sequence

Post by Nige »

No order, other than all the front then all the rear or the other way around.

You've got to remove pretty much all the suspension parts to replace the bushes so you might as well refurb the lot. Balljoints, track rod, tops mounts, etc. It isn't particularly difficult and the parts are relatively cheap. After you've done it get it cornerweight/geo'd.

Only problems you'll come across is getting crusty nuts and bolts off.

I did the rear first and then the front on my 3.2. I use Superpro throughout for ease and cost but you might want to keep it more standard. I think some of the images are missing now though as it was 12 years ago.
https://www.impactbumpers.com/forum/ind ... ra/page/4/
911hillclimber
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Re: Perished rubber bush replacement sequence

Post by 911hillclimber »

IMHO above advice is spot-on.
I did all my bushes on my '73T in 1989 when plastic bushes were quite rare and all from the USA.
Today, you have never had it so good!

The modern blue plastic parts are good for the road though I think you can get softer ones now very much for the road.

The grease used is special and you need to use it all.
Getting the parts apart can be hard, all the usual classic car fights with rust and some of the factory bushes were bonded on/in so need brute force to remove.Re-assembly is much easier esp if you use new bolts and nuts.
Design911 and Type911 are good sources for all the parts, stock and aftermarket; good to shop around!

Use a Porsche specialist to set the car up, preferably one used to the early suspension systems. There is a simple procedure to set up, but most bulk at setting corner weights which is worth doing.

You will need to bleed the brakes! Thus, replace the flexible brake pipes unless perfect already.
73T 911 Coupe, road/hillclimber 3.2L
Lola t 492 / 3.2 hillclimb racer
Boxster 987 Gen II 2.9
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Nige
Nurse, I think I need some assistance
Posts: 6603
Joined: Wed Nov 26, 2003 9:11 pm
Location: Denby, Derbyshire

Re: Perished rubber bush replacement sequence

Post by Nige »

Prekom do everything you need if you wanted to go standard or modified.
https://prekom.si/porsche-parts/porsche-911/

Complete front control arms
https://prekom.si/porsche-parts/porsche ... nes-front/

and springplates
https://prekom.si/porsche-parts/porsche ... ones-rear/


Not sure how you order from them though, other have.
M7KYD
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Re: Perished rubber bush replacement sequence

Post by M7KYD »

Thanks for the reply’s and sorry for the lengthy delay in getting back to all. I’m back online and home for 9 weeks so it’s straight up to the garage after I do the school run yippee .
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