ZR-1 Net Registry Forums - Where is the c4 - c5 brake upgrade procedure?

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- - Where is the c4 - c5 brake upgrade procedure? (http://zr1.net/forum/showthread.php?t=6646)

Rob 93ZR-1

09-28-2008 06:43 PM

Where is the c4 - c5 brake upgrade procedure?

I have seen a write up w/ pics, but now I can't find it. I'm not even sure my adapters are bolted up correctly.
Thanks!

Jeffvette

09-28-2008 07:12 PM

Re: Where is the c4 - c5 brake upgrade procedure?

http://www.pnwzr1.com/brake_install.htm

Rob 93ZR-1

09-28-2008 08:10 PM

Re: Where is the c4 - c5 brake upgrade procedure?

Thank you, Jeff!

Jeffvette

09-28-2008 08:13 PM

Re: Where is the c4 - c5 brake upgrade procedure?

Rob, if you have any questions, just call.

Chris_32212

10-14-2008 10:25 PM

Re: Where is the c4 - c5 brake upgrade procedure?

how much does the C5 brake upgrade really help the cars breaking performance? does anybody sell this in a kit?

Jeffvette

10-14-2008 11:07 PM

Re: Where is the c4 - c5 brake upgrade procedure?

Quote:

Originally Posted by chris_32212 (Post 46580)

how much does the C5 brake upgrade really help the cars breaking performance? does anybody sell this in a kit?

For street driving, virtually no difference. Performance driving, the thicker rotor helps with heat and the caliper is sturdier than the C4.

And I can do complete kits.

Chris_32212

10-15-2008 12:06 AM

Re: Where is the c4 - c5 brake upgrade procedure?

so you saying that stopping distance doesn't really improve but brake fade would be reduced while auto Xing?

Chris

Jeffvette

10-15-2008 12:08 AM

Re: Where is the c4 - c5 brake upgrade procedure?

Quote:

Originally Posted by chris_32212 (Post 46596)

so you saying that stopping distance doesn't really improve but brake fade would be reduced while auto Xing?

Chris

You should not be getting any fade with the stock system in an autox setting.

Chris_32212

10-15-2008 12:27 AM

Re: Where is the c4 - c5 brake upgrade procedure?

i have never taken my car to a track of any sort. i plan on it, just haven't had the opportunity. but i have read reports that say the ZR-1 brakes are one of the weak spots of the Z. not that they aren't reliable under normal driving conditions but that after only a few hard braking events from high speeds will cause the brakes not to perform as well.

Chris

Jeffvette

10-15-2008 12:41 AM

Re: Where is the c4 - c5 brake upgrade procedure?

The factory system when in 100% proper operating condition, should be adequate enough to lock up the tires.

Under prolonged usage at a road course, you will notice fade due to lack of air circulation and and also the lack of mass. Keep in mind the ZR-1 is 3,500 lbs. Porche, Ferrari, Lambo all used Brembo 4 pistons at the time the ZR-1 was released. For some reason GM felt obligated to stay with the PBR caliper.

The C5 kit will help at the track, plus the components are cheaper to replace compared to the C4 gear.

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