Upgrading '91 rear brake calipers to '92+
#1
Burning Brakes
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Anyone know where I can find a write up/procedure on upgrading the 2 piston brake calipers to 4? Is it a very straight forward DIY job or should I leave it to my wrench? Other than the calipers are there other parts I should be getting. Thanks in advance.
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Originally Posted by garrett376
Isn't it a direct bolt on??? From all the stuff I've read, I thought it was....
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Originally Posted by PC2
Anyone know where I can find a write up/procedure on upgrading the 2 piston brake calipers to 4? Is it a very straight forward DIY job or should I leave it to my wrench? Other than the calipers are there other parts I should be getting. Thanks in advance.
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I did the upgrade and it's just bolt on. However I didn't change the rear pressure regulator, i will also order the part and change it.
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Last edited by nine64; 07-28-2004 at 03:10 AM.
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Jeff Curtis has mentioned that a little more rearward bias is not a bad thing (I think he's the one that mentioned that...) especially for a car used on the track; I'd think that changing just the calipers would not harm the overall balance, but maybe improve it. Someone please confirm with fact!!! ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Jason, what is the bias of that part number you listed?
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Jason, what is the bias of that part number you listed?
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#8
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Changing over to the 4 piston calipers is a bolt on, and you should, as mentioned, also change the bias valve to the 92+, which would then be the factory configuration. Some people with 4 piston brakes all around, who use their 964's on the track, have found that going to the Turbo 60 bar bias valve provides additional stability under heavy braking.
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Originally Posted by Bill Gregory
Changing over to the 4 piston calipers is a bolt on, and you should, as mentioned, also change the bias valve to the 92+, which would then be the factory configuration. Some people with 4 piston brakes all around, who use their 964's on the track, have found that going to the Turbo 60 bar bias valve provides additional stability under heavy braking.
mostly street use for me, would you suggest that i use the turbo bias valve?
part no.?
thanks.
10
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mostly street use for me, would you suggest that i use the turbo bias valve?
#11
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Originally Posted by nine64
I did the upgrade and it's just bolt on. However I didn't change the rear pressure regulator, i will also order the part and change it.
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Do you remember where the part numbers are printed on the calipers? I'm going to LA dismantler (Porsche grave yard) to pick them up and just wanted to make sure they are the rear calipers and not the fronts. Thanks!
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#12
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Do you remember where the part numbers are printed on the calipers?