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Front Caliber Piston boots.

Old 08-13-11, 06:02 PM
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IAN
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Front Caliber Piston boots.

Probable a stupid question but I'm rather lazy before my next time attack event.

Brand new boots on the caliber pistons didn't last to long. Completely melted. Is there anyway around this.

How bad would it be to compress the pistons back in without putting new boots on when I put new race pads in?
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Old 08-14-11, 08:41 AM
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loose the boots, make sure you wipe the pistons clean before you compress them. Ive done this for a while now, however its not a street driven car. the boots wouldnt last 15 minutes on track for me.
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Old 08-15-11, 01:00 PM
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I'd add in some brake ducting. They will melt, but anything you can do to drop the temps will help. I bought a set of rebuilt calipers and the rubber was ****. I bought the mazda motorsports rebuild kit and the rubber lasted a lot longer before melting. I also built a stainless heat shield to fit behind the brake pads (basically a copy of the brake pad backing with some tabs to secure it to the backing plate on the top and bottom).

After all that I still overheated my brake fluid when a duct folded up on me so I did a 6 piston willwood setup with the thermolock pistons and a fully recirculating fluid system.

-Trent
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Old 08-15-11, 03:20 PM
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Originally Posted by TrentO View Post
I'd add in some brake ducting. They will melt, but anything you can do to drop the temps will help. I bought a set of rebuilt calipers and the rubber was ****. I bought the mazda motorsports rebuild kit and the rubber lasted a lot longer before melting. I also built a stainless heat shield to fit behind the brake pads (basically a copy of the brake pad backing with some tabs to secure it to the backing plate on the top and bottom).

After all that I still overheated my brake fluid when a duct folded up on me so I did a 6 piston willwood setup with the thermolock pistons and a fully recirculating fluid system.

-Trent

That sounds familiar;
Stock FD calipers, HAWK DTC60 pads, willwood EXP600+ fluid. no brake ducts would boil fluid in less than 10 laps, add 2" ducts gets me 5 more laps, bump it to 3" ducts and 1mm SS backing plates and Im good at mostly good race city (still get the pads past their ideal temp but not loosing much friction or boiling fluid), take it up to stratotech and Im boiling fluid, overheating pads, and cracking rotors after the 10 minute mark on track... Would do a stoptech kit but with the track closing whats the point...
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Old 08-15-11, 06:14 PM
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Thanks for posting. I put in new rubber boots on one caliper already. Will look into some brake ducting. Probable buy the mazdamotorsport brake duct kit. Will try the idea of a small backing plate. I don't want to go the big brake update yet as I have a few pads and calipers as spares.
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