Seized caliper piston, again...
 

Left front caliper seized yesterday. Was driving around for the first time this week after blowing coolant everywhere before Christmas. Got it all fixed and went for a test drive. Not even 10 minutes driving around town I get this horrible screeching/squealing noise:vash: Went back home to find the front left wheel almost too hot to touch. Took everything of and yay, another seized piston.

Had this happen a while ago on track, replaced both calipers with refurbished ones and they held up good on 2 trackdays. I cleaned and lubed them after both days and all was well. Until yesterday...

Should I bother rebuilding this one just to be waiting for the next time it seizes, or pony up and get the Wilwood kit from savington. I know I want to eventually, but I have fuck all to spend now :(

Please talk me out of getting Sav's kit now putting me further into debt:2cents:

The piston is seizing or the slider?

Its pretty hard to argue with the trackspeed kit...its not like single-piston calipers were designed for what we do at the track.

Piston. I wish it were the slider pins, that would be an easier fix. Sliders are lubed well and sliding like your average bf though...

Had the same thing happen to me years ago, it turned out that the rubber hose leading to the caliper fails from the inside by swelling shut. When I pressed the brakes down the fluid would engage the caliper but because the line was so restricted, it would not release the pressure. I don't know if this is your issue, but you may consider checking it out.

https://www.miataturbo.net/forum/t40100/

Thread needs to be updated. Only 3 left at that price.

Attachment 201528

I've never had a problem with my front calipers, but I've gone through about 6 rear ones.

I need to put my BBK on.

I've had this before with the stock rubber hoses, and now with good braided hoses so I'll rule that out. I released pressure and opened the bleeder too, no dice. It's definately jammed :fawk:

I know I want to switch to wilwood fronts eventually and the kit sav and crash are offering to fit the corrado rotors I already have is tempting as hell. I just cannot afford it right now:vash: Then again, a rebuild kit and fresh fluid will run me at least $100. Or get a rebuilt one and fresh fluid for the same price. I feel like it's just postponing the inevitable and I'll keep destroying front calipers on a regular basis untill I get the wilwoods

You probably already checked but .....

What kind of shape is your rotor in? Is it past the minimum spec for thickness? Perhaps your piston(s) are extending too far causing them to rock over and jam?

Just my $.02, you can keep the change.

My BBK is bigger than your BBK :D

Rotors and pads are well within spec

I have the Willwood big brake kit from Goodwin racing and love it, there is no sense in spending more money on stock brakes or anything for that mater if you have to buy anything buy a better part and be done with it.

Wilwoods it'll be then. Now I have figure something out to fix this untill funds are sufficient again

We'll be having a set of Wilwoods* for sale shortly, contact me when you have the cash.
They are a few months old, tops.

I had my OEM seize too, that's when I got the BBK.

*) The Goodwin/FM kit with super duper version 4 rotors.

replacement friction rings are hella expensive right? I was hoping to be using the corrado ones I already have

With your current power you will not replacing them before the Sun dies out. But yea, rings are around USD 160 per side.

If you want the cheap rotors, you will need the 949 brackets.

Good to know they'll last me a while. $160 each is expensive, corrado rotors cost me about $200 a set, which is still rape though. I need to know whether or not the trackspeed kit clears a +38 15x7 Kosei K1 and then I need to start saving some :2cents:

some guy is lending me a front caliper until I got enough money raised for the trackspeed kit. Hoping to get 'r done by april, in time for the first serious trackday

They cost about $35 each here; we can ship you some when you order the kit, just let us know.
And we will be test fitting some Kosei K1's soon, I'll let you know the outcome.

Awesome. If you're sure they'll clear, can you get me a quote for the kit, including 2 corrado rotors and a set of XP10 pads. If the centering rings are the same as M-Tuned kit, I do not need those, unless it doesn't matter in price. Thanks