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Old 08-03-2013   #2
batchman
 
Join Date: Jun 2009
Location: I live at Devens, one run at a time
Posts: 454
Default Re: Yun's rear brake upgrade - Part 1

Quote:
Originally Posted by Daniel_Mc View Post
Depending on what racing you are doing getting a set of good brakes will be great not to mention much safer (or could change the class be careful and read your class rules).

Our ZR-1 has AP Racing brakes and the Camaro master with a bias valve however I cannot comment on the install the builder of the car did this but works great on the street (I do not track this car). However I can get you pictures if you are interested.
-Daniel
Not to steal Yun's thread completely, but for autocross the J55s with appropriate pads and braided lines should be just fine (my 99 Cobra had essentially the same caliper and braking was excellent with 250 lbs more weight and a lot less tire). Runs are usually under a minute and only 2-3 real braking points, then 20 minutes to next run. In fact I sometimes think of swapping to 12"s to reduce weight.

My concern with the F-body MC is rear bias. No way to increase the rear bias, adjusters only work as limiters. I have significant understeer under braking, meaning I need more rear bias. Since I really need a firmer/faster pedal (ie 1" master bore) I'm hoping to hear from someone with j55s had to limit rear braking with the F-body MC.

Looking forward to Yun's next chapter!

Cheers,
- Jeff
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