Brake Caliper Joint O rings

[looey]

So what is everyone doing about Caliper joint O rings when refurbing Yamaha brake calipers ?.

I'm just about to refurb Tracey's R1-Z (3XC) front brake calipers and wanted to fit all new genuine seals.

Couldn't see the caliper joint O rings in the parts microfiche or included as part of the genuine caliper seal kit.

So I rang my local Yam dealer who said, "Yamaha stopped selling them ages ago, as there wasn't enough demand for them" . Well I said, if you're refurbing the caliper and fitting new seals, you really need to split the caliper to do the job.

He also said there were 3 different types/sizes of joint O ring across all the different caliper types and didn't know what the sizes were I needed  

I know Powerhouse supply a pattern kit which includes all the seals, joint o rings, bleed nipples, etc. etc. but I don't really want to fit pattern.

Anyone got any ideas or been here before ?.

Cheers

[jon]

Looney, I have had the same findings as you regarding the caliper half seals.

I used a genuine Kawasaki part in mine.

Not sure I can remember what model, but all I did was take along an old seal to match it up.

They are fractionally thicker, but work perfectly.

Jon

[jon]

Looey, just remembered I taken photos of the caliper overhaul.

You can clearly see the part number.



Jon

[midlifecrisisrd]

Powerhouse do kits on ebay that have them but ain't genuine

Personally I use genuine suzuki ones from the tokico calipers.

Steve

[JonW]

Dont the Yamaha full seal kits have them in? I was sure they did in the ones I fitted to my 85.

[LC_BOTT]

Think I did the same as midlife, and used Suzuki ones, Have you got the seal already? as I used FZR250 seals as I couldn't find anything 3XC idented. (obviously the same calipers though )

[looey]

Yeah cheers guys, looks like Suzuki or Kawasaki ones are the way to go once I've got the old ones out and got measurements to check.

Haven't bought the seal kits yet but I've got the part numbers for the correct 3XC caliper seal kits from Yamaha (there's no joint O ring included). Sounds like FZR250 will be a good alternative if they 3XC kits are NLA

The brakes are ferocious on this thing, as they have a twin disc and caliper setup as opposed to just one on the TZR250. I did actually think at one point of removing one of the discs and calipers and putting a singe line on to see if the braking was similar to the TZR single disc setup ?.

I did my GSX-R1000 six pots a couple of years ago and the genuine seal kits came with 4x joint O rings but the calipers only use one each, so I still have the 2 over from that job, so I'll see if they are the same size (I'd need to buy an additional 2 obviously).

[crowley]

I used the Powerhouse ones on my YPVS and they seem fine. If what you want isn't listed, give them a call, they're very helpful. Many racers I know use their kit.