C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C5 front brake hardware

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Old Jun 4, 2010 | 02:13 PM
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Default C5 front brake hardware

Just some info for you guys converting over C5 front brakes...

The anti-rattle shims / hardware for the front callipers:

GM pn 18039816 (2) ea.
AC Delco 18K981 (2) ea.
or
NAPA 83212A (1) does both sides, includes hi-temp grease, boots for the slide pins only $11.00

[IMG][/IMG]
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Old Jun 4, 2010 | 02:20 PM
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Any suggestions for finding piston seals & boots?
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Old Jun 4, 2010 | 02:44 PM
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If you don't want to you don't have to use those clips. Many track guys leave them off. I stopped using them on mine. The C4 caliper is similar but doesn't use them. Just clean the dust out of where the pad ears sit. Usually don't use the piston seal either, they burn off at the track. I do lube those slide pins, I've been using Redline synthetic grease.
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Old Jun 4, 2010 | 09:38 PM
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Originally Posted by Cyclonite
Any suggestions for finding piston seals & boots?
GM kits- each kit does 1 F caliper.(seals, dust boots,&guide pin boots. Around $20 each
#12530686
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Old Jun 4, 2010 | 11:20 PM
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Originally Posted by 76LS1BIRD
GM kits- each kit does 1 F caliper.(seals, dust boots,&guide pin boots. Around $20 each
#12530686
The caliper kit isn't a bad deal (from GM).

BUT why is the guide pin boot kit $8.00 FOR ONE BOOT!
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Old Jun 5, 2010 | 02:07 AM
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Originally Posted by Aardwolf
If you don't want to you don't have to use those clips. Many track guys leave them off. I stopped using them on mine. The C4 caliper is similar but doesn't use them. Just clean the dust out of where the pad ears sit. Usually don't use the piston seal either, they burn off at the track. I do lube those slide pins, I've been using Redline synthetic grease.
As a recent convert to C5 calipers, I am glad to read you don't need the clips. How do you lube the slide pins and is there any other points of high temp lubrication like on the J55's?
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Old Jun 5, 2010 | 10:45 AM
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Originally Posted by Sidney004
As a recent convert to C5 calipers, I am glad to read you don't need the clips. How do you lube the slide pins and is there any other points of high temp lubrication like on the J55's?
The pin just sticks into the caliper so pull it out and the boot will come along too. After a year the grease in mine turned to clay! So I generally check the grease after track events and spot bleed. Not to much else to do. Wipe the pistons if you press them in for new pads. I also clean the channels in the abutment bracket where the pad ears go. That can get full of brake dust. I don't put grease there, it burns off. Check them for spread once in awhile. I bought a bag of new bolts that go in those pins. With grease the pin shouldn't wear out but I've been thinking of keeping extra in case the threads in the pin wear out.
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Old Jun 5, 2010 | 10:58 AM
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Originally Posted by Sidney004
As a recent convert to C5 calipers, I am glad to read you don't need the clips. How do you lube the slide pins and is there any other points of high temp lubrication like on the J55's?
When I did my C5 conversion, I used OEM Z06 pads. Factory GM pads, whether they are Z06 or stock C5 pads (also stock base C6 pads) come with the anti-rattle clips. There is an instruction sheet that shows where to put the grease on the pad backing plate. It goes on the outside edges of the backing plate where the plate slips into the clips that fit on the ends of the calipers.

Aftermarket pads typically don't require the anti-rattle clips, but the grease should still be used at the ends of the pads. Might be a good idea to put some anti-squeal stuf on the back of the pad.

When you buy new GM calipers, you also get guide pins, the rubber boots and a little pouch of grease for the pins. You can get the guide pin grease at any parts store; Permatex has little pouches as well as small tubes.
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Old Jun 5, 2010 | 11:14 AM
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I thought that GM grease was poor. It turned to hard clay and the pins couldn't move. I had to scrape it off and put Redline synthetic grease in instead. No trouble so far. It might be okay for street use but check it once in awhile. I thought the stock C5 pads were poor too. The Z06 pads were nice! But poor for track use.
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