For those of you using factory calipers, I was wondering how often you guys reseal them. I have a pair of new remanufactured calipers, and they are leaking after only two HPDEs. Would I have a problem like this with Honda OEM seals?

 

I use the reman-ed calipers & have only had one bad one in 4 years. It was probably we overtightened the bleed screw on that one.

 

just curious, where did you get them from?

both of you, thanks.

 

I stick with Honda new or reman calipers and have not had any problems yet but will probably replace my calipers next year. I will stick to OEM calipers to ensure that I have the OEM parts in the caliper since with non-OEM, you have no idea what seal material, etc. they are using and how heat tolerant that material is. Those Honda engineers know a thing or two about things like this and there are tricks that the aftermarket guys may not know/want to pay for in the typ reman caliper.

I also believe that most aftermarket reman parts are not intended for racing/high performance use...

 

Also, the remans were sand blasted. Would sandblasting be able to cause blemishes in the casting problematic enough to cause stress risers, or does the actual unit have to have a defect from the casting process for that to happen?

 

I don't know about a stress-riser being as much of a concern. Every typical factory caliper has a rough cast-finish. I don't think the typical etching caused by sandblasting would increase the surface rougness dramatically to create more of a problem. If this was a substantial concern, the calipers would be polished.

If they sandblasted inside the caliper, I'd think they'd rehone/machine the caliper cylinders and sealing surfaces.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChassisInnovations &raquo;</TD></TR><TR><TD CLASS="quote">Also, the remans were sand blasted. Would sandblasting be able to cause blemishes in the casting problematic enough to cause stress risers, or does the actual unit have to have a defect from the casting process for that to happen?</TD></TR></TABLE>

If anything, the shot blasting and sand blasting relieves stress risers<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WRXRacer111 &raquo;</TD></TR><TR><TD CLASS="quote">

If they sandblasted inside the caliper, I'd think they'd rehone/machine the caliper cylinders and sealing surfaces. </TD></TR></TABLE>

On most honda calipers, with the possible exception of the very vintage models, the sealing surface is on the piston, not the caliper body. The seal is fitted into the caliper bore, and the piston moves in relation the seal, so as long as the surface on the piston is smooth and free from blemishes, no problem. the caliper bores are always shot blasted to make sure that the hole is free of scale and rust. On some of the old corvette, camaro, and mopar calipers, there is a lip seal on the piston that seals(but usually leaks) against the cylinder wall. In this case, the caliper is bored out and stainless sleeves are pressed in and honed to the correct spec.

We rebuild over 2000 caliper per day, with an almost nonexistant defect rate. The seals we use are standard EPDM rubber, the same stuff that HONDA and everyone else uses.

Just throwing this out there to Clarify. and ...If anyone needs calipers or kits or any brake parts for a decent price, let me know. I can probably help you out.

 

cool stuff.

http://www.wdsource.com/calipe....html

 

I just rebuilt my OEM calipers with 130k miles and plenty of road course use on them (with full race pads, so they got quite hot)... the boots were melted/ripped a bit, but the actual seals were is great shape.

You're more likely to have a leak at the caliper bleed screw as a result of overtightening.

 

Most of the calipers we rebuild are not leaking. Most of the time the sliders are sticking a bit or something like that. Seals very seldom leak.