What happened to my Dynalite?
#1
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What happened to my Dynalite?
Last track event was cut short due to a sticky driver's side caliper that cracked a rotor and burned up the pads. Passenger side was fine. Disassembly revealed damage to 3 of the 4 pistons and caliper bores. Outside 2 pistons popped out pretty easily and the inside 2 required more air pressure and patience to free things up.
Is this caliper rebuildable? There is similar damage to 3 of the 4 bores.
Inside the bore, where brake fluid lives, is still smooth and I can't feel where the anodizing has rubbed away. Outside lip is not smooth and I believe did some minor piston damage (they are no longer smooth and have visible wear).
I know the pistons are trash, but what about the caliper? Can it be saved with some new seals?
What would cause this and how do I prevent it?
Is this caliper rebuildable? There is similar damage to 3 of the 4 bores.
Inside the bore, where brake fluid lives, is still smooth and I can't feel where the anodizing has rubbed away. Outside lip is not smooth and I believe did some minor piston damage (they are no longer smooth and have visible wear).
I know the pistons are trash, but what about the caliper? Can it be saved with some new seals?
What would cause this and how do I prevent it?
Last edited by midpack; 09-17-2015 at 10:35 PM.
#9
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dirty fluid - possible - it was leaking out the bleeder adapters earlier in the day
debris behind pad - likely from the leaky fluid
I was the guy that called you last Friday asking about fluid leaking out the bleeder adapter threads. Snugging them down did indeed stop the leak but it is entirely possible some brake dust filled fluid worked its way into the piston area and gummed things up.
After this incident I'm going to replace piston seals and bleeder adapter sealant every rotor change.
#10
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https://www.miataturbo.net/media-53/...pgrades-42276/
https://www.miataturbo.net/media-53/...-thread-40699/
My old black '94 was sort of the benchmark for road race turbo cars from 2009 to 2011. When it last existed, it was on TSE gen1 11.75 fronts, 1.8L calipers on either 1.8L or Sport rotors (I forget which), and a Sport 15/16" master.
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TSE 11.75" up front and sport brakes in the rear with Hawk DTC-60s all around.
I'm upgrading the fronts to Dynapro and going to try out the Performance Friction PF01/PF11 that seems to be the new hotness. Weight difference between Dynalite and Dynapro is significant, maybe twice as heavy. I guess that is the price you pay for a stiffer caliper.
I'm upgrading the fronts to Dynapro and going to try out the Performance Friction PF01/PF11 that seems to be the new hotness. Weight difference between Dynalite and Dynapro is significant, maybe twice as heavy. I guess that is the price you pay for a stiffer caliper.
#16
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