GSXR calipers and ZXR400

Scott221 · Post by **Scott221** » Mon Mar 30, 2009 5:00 pm

Now having major issues with these calipers and the zxr.

I've had to strip them, clean them and rebuild (using the same seals, they were in perfect condition but no dust seals) as before they were very badly sticking. The pistons were coated in toad and maybe 2 or 3 out of the 6 would work. However, the brakes were strong and had decent pressure behined the lever. After 2 hours of straight bleeding, I can now only get a small amount of pressure behined the lever using its wideist (sp) setting. No air is coming out of the bleed nipples are there are no leaks from the seals. Buggered master cyclinder maybe? Or just the fact that the zxr's mc is too small and now its having to move 12 free flowing pistons rather than 12 siezed ones.

Post by **jake** » Mon Mar 30, 2009 5:22 pm

air gets stuck behind the little piston. take the calipers off and push the piston right back in, that sometime shifts it out...

Scott221 · Post by **Scott221** » Mon Mar 30, 2009 5:29 pm

jake wrote:air gets stuck behind the little piston. take the calipers off and push the piston right back in, that sometime shifts it out...

Did that to both... twice.

Post by **jake** » Mon Mar 30, 2009 5:46 pm

I know ive said it before mate, but i was never happy with them whatever i did to them.
All i can say is 150 quid i sold mine for on ebay, k1/k2 4 pots where bought, and now i have good brakes and 100 quid in me pocket.

will#224 · Post by **will#224** » Mon Mar 30, 2009 5:49 pm

Get the calipers above the mastercylinder

Scott221 · Post by **Scott221** » Mon Mar 30, 2009 8:47 pm

Another thing which I just remembered is the seals were tapered. Meaning that the side wall of the seal got larger from one side to the other. I put the tapered edge of the seal face down. Is this correct?

Post by **hciR** » Mon Mar 30, 2009 9:42 pm

Can't help you with the seals, but i've found squeezing the brake and tying it to the handle bar then leaving it over night has helped to bleed them.

Post by **jake** » Mon Mar 30, 2009 10:06 pm

Scott221 wrote:Another thing which I just remembered is the seals were tapered. Meaning that the side wall of the seal got larger from one side to the other. I put the tapered edge of the seal face down. Is this correct?

I cant remember tbh. I know i only had one seal on each piston. I dont put the dust seals on, they are tappered ar'nt they?

Scott221 · Post by **Scott221** » Mon Mar 30, 2009 10:40 pm

The main seals are tapered.

Scott221 · Post by **Scott221** » Mon Mar 30, 2009 10:42 pm

Anyone know what the standard size is for the zxr m/c?

RedexRobB · Post by **RedexRobB** » Mon Apr 06, 2009 6:41 pm

hciR wrote:Can't help you with the seals, but i've found squeezing the brake and tying it to the handle bar then leaving it over night has helped to bleed them.

when you do that, the brake fluid is absorbing water out of the atmosphere!

Post by **masterofinsanity** » Tue Apr 14, 2009 10:46 am

only if you leave the reservoir cap off robB?

scott i'm assuming the calipers you have are the same on my TL? having trouble myself getting decent pressure behind them.

Post by **WelshD1K** » Tue Apr 14, 2009 5:39 pm

masterofinsanity wrote:only if you leave the reservoir cap off robB?

scott i'm assuming the calipers you have are the same on my TL? having trouble myself getting decent pressure behind them.

same calipers different fittement (i tried to pinch my dads ones for my zxr lol )

Gemini · Post by **Gemini** » Wed Apr 15, 2009 4:44 pm

for the love of.... grrr!

get a brembo mc

gem

Scott221 · Post by **Scott221** » Wed Apr 15, 2009 10:26 pm

It will not clear the clocks!!!!

www.zxrworld.co.uk

GSXR calipers and ZXR400

GSXR calipers and ZXR400

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Re: GSXR calipers and ZXR400

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Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400

Re: GSXR calipers and ZXR400