xtnct

iTrader: (33)

Yes, I am done this year but the problem is that I never ended up starting

Thinking of selling my FLT-A2 CO's and still NIB Essex AP kit that I never put on the car....

Back to topic... what's the torque for the bolts holding the caliper halves?

honda-guy

iTrader: (55)

when i crack the bolt open, they felt like at least 40 lbs, but i think it was because of the loctite. i torque them back on with about 40 lbs.

honda-guy

iTrader: (55)

if there's enough interest, i could put together a group buy for the stainless pistons through my sponsor.

chu

iTrader: (72)

I have a spare set of front calipers that could use dust boots. I will likely do the same now. Waiting to see some more track-use updates. Oh wait...I'm sponsored by the same people. LOL

Raptord

iTrader: (10)

Pending positive feedback from you after you hit the track, I would be in for a group buy

blackenedwings

Likewise, they look nice, and mine are probably about due for a rebuild.

golgo13

iTrader: (134)

+1

Also, honda-guy, your sponsor has the best prices I could find on the boots and seals, so you've got at least one purchase right here for both of my front calipers.

R/TErnie

iTrader: (32)

Do they make Titanium pistons?

honda-guy

iTrader: (55)

they could make titanium pistons but i don't think anyone would afford it.

i don't see a big advantage of titanium pistons over stainless since stainless is a worse heat conductor. only advantage of titanium is lighter and higher melting point, but i don't see stainless pistons melting. i have seen aluminum pistons melt, but he did run the pads all the half way down the backing plates. i think most use two piece pistons when they use titanium.

here are some pictures of titanium pistons inserts.

honda-guy

iTrader: (55)

i think most of you guys have seen this test before. i was going to do a similar test but use brake fluid and thermometer inside the fluid. but i got lazy and just installed the pistons.

R/TErnie

iTrader: (32)

^ weight.

There is a marginal difference between thermal conductivity between stainless and Ti... benefit given to the stainless.

golgo13

iTrader: (134)

How does that apply to the titanium shims behind the pads? I thought the differential in thermal conductivity was the factor and not weight. Would that also apply with regards to heat transfer to the calipers in this case?

jerdeitzel

iTrader: (9)

TI also doesn't hold the heat as much as stainless. I can touch my TI exhaust minutes after exiting the track. It's rather amazing!

It's an interesting upgrade tho. I'd like to see more testing. What do stock pistons cost?

honda-guy

iTrader: (55)

i didn't weight the stainless pistons vs aluminum but i would say that's its probably 1/4-1/2 lbs all together with 4 pistons. i could check with the manufacture about the weight difference. you'd probably save more weight if you run the pads half worn.

stainless shims are cheaper and have lower heat conductivity vs titanium shims.

golgo13

iTrader: (134)

Sounds fairly advantageous to run titanium pistons.

I found a few on the web in the wrong size for ~$150 each piston. Only a paltry $600 brake upgrade.