Partial Cure Found for Overheating C4 Brakes
03-10-2009, 03:30 AM
#2
Racer
Member Since: May 2008
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yep. Do your brake bed-in at night and watch the
direction in which the sparks fly - there's strong air flow outward
through the wheels. You don't want to block it off!
This also explains why the outboard pads wear faster (mine do, at
least). They're on the downwind side.
I am told that Harrop found that wheel design makes a "huge"
difference in brake cooling.
You'd think that race wheels would be designed like fan blades...
direction in which the sparks fly - there's strong air flow outward
through the wheels. You don't want to block it off!
This also explains why the outboard pads wear faster (mine do, at
least). They're on the downwind side.
I am told that Harrop found that wheel design makes a "huge"
difference in brake cooling.
You'd think that race wheels would be designed like fan blades...
03-10-2009, 09:50 AM
#3
Team Owner
Member Since: Mar 2001
Location: Boston, Dallas, Detroit, SoCal, back to Boston MA
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It it the sawblade design, or the fact that you went to a bigger diameter wheel, so there's more room for the calipers to breath?
I'm running 18's on the front as well.
I'm running 18's on the front as well.
03-10-2009, 10:28 AM
#4
Melting Slicks
Thread Starter
03-10-2009, 11:26 AM
#5
Race Director
I went from the pretty enclosed stock 17" '88 wheels to the really open C5 thin spokes and didn't notice a difference. Running real track pads made a nice difference though!
03-10-2009, 03:08 PM
#6
Burning Brakes
Four of us who road race C4's had severe overheating problems when we upgraded to Wilwood calipers. Mine was resolved by two things: 1) increasing the air to the brakes with more ducts; 2) stop using the brakes so much (seriously!). I am not sure which one was the most effective, but using the brakes less and being more efficient with them also decreased lap times.
