The boot on the piston on the brake caliper has a rip in it, should the caliper be repleaced or is it ok or what could happen?

 

if the piston seal is torn, it will leak brake fluid like a bat outta hell.

are you sure you're not talking about the little boot on one of the sliders?

 

yea it's not the slider boot, it's the one on the piston, but there was no brake fluid leaking, thats why i wasn't sure

 

It's the dust boot, not the piston seal. It isn't absolutely critical, but in a year or so, you may start leaking fluid as crap gets in past the boot and wears the bore and piston seal.

This happened to me and I bought some remaned calipers at Autozone last week. You can rebuild, but the boot is infamous for being a bitch to get in right (looks like there's a tool to get it in easily). I spent $60 on the replacement calipers.

Heat is what does this, so removing the dust shield behind the rotor would be highly advisable to get the heat away from the rotor, which in turn helps it stay out of pad and piston.

I just asked about this in the roadracing forum. Not much they can add that i didn't do, except for cutting the bumper up for cooling ducts. Pad choice may also affect heat retention, as can pad life (thin pads transfer more heat).

 

And, well, kind of OT, but since we're on the topic of the boots.. When you push the piston back in, the boot won't go even, but when you install the caliper and pads and put ti back, it'll move a bit so the boot will be even.
Or so the tech on the phone explained to me.
Just thought I'd add.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bill Hook &raquo;</TD></TR><TR><TD CLASS="quote">I spent $60 on the replacement calipers.</TD></TR></TABLE>each or for a pair?
is there a warranty on them?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willard &raquo;</TD></TR><TR><TD CLASS="quote">each or for a pair?
is there a warranty on them?</TD></TR></TABLE>

That would be both, not including tax, for a GSR. I'm sure ITR calipers are more. The piston is the same, though. The point was how much cheaper Autozone stuff is over the dealer. They have a lifetime warranty, which is even better than their rotor warranty.

 

The weird thing about Autozone when I checked prices was no matter what caliper you ordered they were all the same price. For example NSX, ITR, or even Porsche 911 Turbo Calipers were all the same price.

You can look them up on on the website, but they don't list the ITR. So you would have to call for the ITR price. Becareful though, local Autozones are notorious for quoting different prices then on the website. If you call around one Autozone in your area will give ya the same price as the website...just a heads up.

-Paul

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bill Hook &raquo;</TD></TR><TR><TD CLASS="quote">I'm sure ITR calipers are more. The piston is the same, though.</TD></TR></TABLE>same pistion diameter?
they will be a little more for sure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willard &raquo;</TD></TR><TR><TD CLASS="quote">same pistion diameter?
they will be a little more for sure.</TD></TR></TABLE>


Nope, both pistons are 57mm.

Ask Brian Hasty.

Moreover, the MC is the same between ITR and non-ITR. Usually, a larger piston necessitates a larger MC for the concommitant increase in fluid volume.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bill Hook &raquo;</TD></TR><TR><TD CLASS="quote">


Nope, both pistons are 57mm.

Ask Brian Hasty.

Moreover, the MC is the same between ITR and non-ITR. Usually, a larger piston necessitates a larger MC for the concommitant increase in fluid volume.</TD></TR></TABLE>

your sure they are the same? i called dealer and they said that those are different sizes.

 

ITR caliper pistons are bigger for sure! i just did a rebuilt on my itr calipers. the damn piston boot was soo freaking hard to get in. i kept ripping them and wasted 60 bucks on the seals. i then sold them and went to NSX brakes.

 

GSR and ITR piston diameter the same, ITR caliper body is bigger though