patsmx5

iTrader: (16)

Be careful doing that, I've done it too, but there's some bad cancer-causing chemicals in that stuff. I wear gloves now when using it.

aidandj

iTrader: (5)

<p>Not sure. @OGRacing would know the answer to that.</p>

deezums

iTrader: (3)

Don't ever set it on fire, it makes stuff that smells like fresh cut grass. If you inhale it, you die. Phosgene is the word, or the bad stuff. I agree with pat as well, that **** is not to be fucked with. I bet you can't even buy it in cali.

That means don't weld parts cleaned with brake cleaner, either. Don't do lines off hot brake rotors cleaned with brake clean.

I plan on pulling my pads and blowing out whatever dust gets between the pad and caliper as I rotate the wheels. I plan on using air, because you really don't want to pack dust down in the bore between the piston.

turbofan

iTrader: (1)

<p> </p><p>&nbsp;</p><p>I actually laughed out loud, and had intended on making a similar post as Andrew did. Glad you clarified </p><p>Seems like best bet is just to use the crap out of them and replace them every 3 years or so. Not too bad.</p>

codrus

It's tetrachloroethylene that makes phosgene when you heat it, and no, you can't buy it in California. Brake cleaner here is basically heptane and acetone.

--Ian

bbundy

I've never had issues with the Bootless. Many years of service and no maintenance on the pistons. I've seen lots of dust boots turned to charcoal.

joyrider

iTrader: (8)

Those are are mean for track use, stock 1.8 calipers boots melted while on track.. I assume any boots will do the same... and you got the feedback info that they will BBQ even on Wilwood's calipers.

Check the pistons for wear and replace if you can...

aidandj

iTrader: (5)

I think I got the catching on fire thing figured out.

So walk me through this noob style.

When changing pads I want to make sure to clean the piston off real good before pushing it back into the caliper. So compressed air? Wipe it clean?

Can I push them in one by one?

Stupid questions but I've never dealt with wilwoods before.

patsmx5

iTrader: (16)

I would just wipe them off with a rag and push them back in. I have always used an old brake pad and a c-clamp to push the pistons back in, not sure if that's the proper way but it's always worked for me.

deezums

iTrader: (3)

You're gonna need to support all ze pistons when you try reinserting them, otherwise they'll go pop again and that's no fun.

I have no idea on the dust, I was gonna cross that bridge when I came to it.

codrus

I've had Dynalites on my car for 10 years now and never bothered to clean the pistons, seems to be doing fine.

As for retracting the pads, it's best to do it by pushing all of them at once, but I've done it before with just a screwdriver and it works fine. The best way of it is to buy one of these, though:


Lisle Tools 29100LISLE Disc Brake Pad Spreader

Insert it in the caliper, squeeze 3 times, wiggle it to pop it out, and insert new pads. Done.

--Ian

aidandj

iTrader: (5)

Thats like $20 too much. Wish harbor freight had a version.

turbofan

iTrader: (1)

If i could buy it locally at that price and have it now I'd do it NAO. But unfortunately it won't arrive before Laguna so... maybe later. maybe.

greddygalant

iTrader: (3)

Caliper spreader is choice for fixed calipers multiple pistons. Works great on my lotus calipers as well as 6-8 piston gigantic bmw/porsche calipers. Worth it's weight in gold

joyrider

iTrader: (8)

EDIT : wrong pic

aidandj

iTrader: (5)

How would that work for something like a dynapro?

codrus

It doesn't, that's for a single piston sliding caliper like the factory one.

Swapped pads today and I couldn't find my caliper speculum, had to make do with a screwdriver instead. Took a few minutes longer, but still works fine.

Found the spreader 10 minutes after I was done with the brakes, while getting out the heat gun.

--Ian

OGRacing

iTrader: (1)

sorry i was out of town all week with the SCCA runoffs and racing with NASA @ Savannah.

generally the pistons will move outward, so keeping the pistons clean isn't that much of a concern. if you want, during pad a change (when the pistons are moving inward).. hit the pistons with brake clean and wipe them off with a lint free rag. that should keep them clean. but like i said before you shouldn't have any problems with dirt, and stainless pistons shouldn't rust.