Need brake help!
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Thank you Jon, I'm working with what I have available down here in Puebla, Mexico. I will try to get the Motul but Ate seems to be the readily available one.
Shouldn't the seals be available from Brembo?
They make the calipers don't they? Then again I have a Brembo factory about 10 minutes from my house and I can't buy anything good from them but Jetta pads
.
Actually the VW plant is just 5 minutes away from my house and we should have everything available, I know VDO, Keiper Recaro, Johnson Controls, Brembo, Sachs, Bilstein, among other are just sitting around the VW plant, then again, they don't sell the good stuff out to enthusiast customers...
Shouldn't the seals be available from Brembo?
They make the calipers don't they? Then again I have a Brembo factory about 10 minutes from my house and I can't buy anything good from them but Jetta pads
. Actually the VW plant is just 5 minutes away from my house and we should have everything available, I know VDO, Keiper Recaro, Johnson Controls, Brembo, Sachs, Bilstein, among other are just sitting around the VW plant, then again, they don't sell the good stuff out to enthusiast customers...
Shouldn't the seals be available from Brembo?
Jon
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Read my post again. I said I have upgraded to the GT3 calipers, and they use 997TT rotors, 350mm, front and rear. Actually now I have Girodiscs up front and no spacers were needed with them either.
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Found in repair manual....
Pistons size.... I am surprised to see the front and rear have two different size of pistons....front 44mm 36mm rear 30mm 28mm
Last edited by jpflip; May 1, 2010 at 08:36 AM.
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Thanks
You can get rebuild kits from GMG. You need to know the sizes of your pistons. The kit consists of one square section o-ring and one dust cover per cylinder. The job is really not very difficult. Here are the steps:
1. Remove wheels. Push brake pedal down, and place a piece of wood between the clutch and accelerator pedals holding brake pedal down. This prevents fluid from running out when you open the brake line.
2. Remove brake line from rear of caliper. You'll want flare wrenches for this. I think it's a 14 mm, but not positive. Put a tray underneath, but if you have more than a drop or two of fluid come out, the brake pedal isn't low enough. Adjust wood stick.
3. Remove two bolts holding caliper to spindle and take caliper to a convenient spot for rebuild.
4. Put caliper in a tray to catch fluid. Use C-clamps or plastic grips to hold 3 of the pistons in place. On fourth cylinder, remove dust seal, then try to pull the piston out. Sometimes it comes out easily. If not, use a little air pressure on the hole where the brake line went in to pop it out. I usually place a piece of rubber between the piston and the facing clamp to prevent dinging if the piston pops out hard.
5. Reach inside the cylinder where the piston came out and remove the square cross-section o-ring. You need some sort of pick for that, but be careful not to scar the cylinder walls. Clean interior of cylinder, then lubricate replacement o-ring with grease made for that purpose and/or some clean brake fluid. Clean cylinder, and I also usually run a little steel wool on it. Re-insert and press into place. Sometimes a plastic carpentry clamp is useful to get the piston all the way in. Install new dust cover.
6. Repeat for remaining pistons.
7. Re-install caliper. Torque bolts to 63 ft-lbs. Release brake pedal and bleed.
Hope that helps.
Jon
1. Remove wheels. Push brake pedal down, and place a piece of wood between the clutch and accelerator pedals holding brake pedal down. This prevents fluid from running out when you open the brake line.
2. Remove brake line from rear of caliper. You'll want flare wrenches for this. I think it's a 14 mm, but not positive. Put a tray underneath, but if you have more than a drop or two of fluid come out, the brake pedal isn't low enough. Adjust wood stick.
3. Remove two bolts holding caliper to spindle and take caliper to a convenient spot for rebuild.
4. Put caliper in a tray to catch fluid. Use C-clamps or plastic grips to hold 3 of the pistons in place. On fourth cylinder, remove dust seal, then try to pull the piston out. Sometimes it comes out easily. If not, use a little air pressure on the hole where the brake line went in to pop it out. I usually place a piece of rubber between the piston and the facing clamp to prevent dinging if the piston pops out hard.
5. Reach inside the cylinder where the piston came out and remove the square cross-section o-ring. You need some sort of pick for that, but be careful not to scar the cylinder walls. Clean interior of cylinder, then lubricate replacement o-ring with grease made for that purpose and/or some clean brake fluid. Clean cylinder, and I also usually run a little steel wool on it. Re-insert and press into place. Sometimes a plastic carpentry clamp is useful to get the piston all the way in. Install new dust cover.
6. Repeat for remaining pistons.
7. Re-install caliper. Torque bolts to 63 ft-lbs. Release brake pedal and bleed.
Hope that helps.
Jon
Thanks Jon, this is good info. Now the problem is to found seals... From Stoptech or GMG.....
I looked at Stoptech's web site (Stoptech.com) under "How to order" - there are a lot of vendors. GMG is one that stocks caliper rebuild kits. The OP is in Canada, so it may be easier for him to order from one of the vendors there. My recollection is about $50/wheel for the o-rings and dust seals.
Jon
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canada store...
Liquidcooled. I need some seals also so....I already sent "E" mails to a couple of Stoptech resellers in Canada. I will let you know the price and the delivery time as soon I got a replied... Engineered Automotive and JRP....
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I got a set of spare front caliper ( from ebay last year ) and just dismantle them on my bench work, as you explain Jon, and I am amazed to see how simple it was to do... That's another reason why I love the internet and those forums... Can you believe that some dealers won't replace those seals and will charge you for a complete caliper assembly???? Thanks a lot Jon!
I got a set of spare front caliper ( from ebay last year ) and just dismantle them on my bench work, as you explain Jon, and I am amazed to see how simple it was to do... That's another reason why I love the internet and those forums... Can you believe that some dealers won't replace those seals and will charge you for a complete caliper assembly???? Thanks a lot Jon!
It is hard to understand why Porsche doesn't supply the seals, but I guess that dealers aren't supposed to go out and source these parts?
Jon
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Do you guys have StopTech brakes? Because all those kits were from Stoptech.
Where would you find kits for Brembo GT3 brakes? How do you determine which size kit fits your application? My front calipers have 3 different sized pistons.
Where would you find kits for Brembo GT3 brakes? How do you determine which size kit fits your application? My front calipers have 3 different sized pistons.
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From: Montreal Canada
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I don't know about GT3 but in our case, we found out the diameter of the pistons and with that you order the seals see link http://store.zeckhausen.com/catalog/...h=82_1169_1172
I look like a specialist here but I just learn about it from Fast Fwd (Jon)
Last edited by jpflip; May 1, 2010 at 05:04 PM.
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Big thanks to Jon for pointing me in the right direction. I called Stoptech and they told me they make a rebuild kit for my rear caliper and that their rebuild kit is also more resistant to heat, they also told me the piston size 28mm and 30mm in each rear caliper and gave me the part number. They said I would have to purchase it from one of their distributor so I called Zeckhausen Racing who I've bought from before and had good experience with. The kit was $50.00 per side, much cheaper than new calipers.
I was a little surprized that Porsche doesn't make a rebuild kit for my car, I wonder if they make them for the GT3RS, they have to know most people buying this car will be tracking it and might require a caliper rebuild down the road.
jpflip I'm not to far from JRP, but my experience is that Canadian stores never stock most parts I need and they have to order them from the US. I find I get the parts I need much quicker and usually cheaper if I order the parts myself from the US.
I was a little surprized that Porsche doesn't make a rebuild kit for my car, I wonder if they make them for the GT3RS, they have to know most people buying this car will be tracking it and might require a caliper rebuild down the road.
jpflip I'm not to far from JRP, but my experience is that Canadian stores never stock most parts I need and they have to order them from the US. I find I get the parts I need much quicker and usually cheaper if I order the parts myself from the US.
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