Author Topic: Wanted YZ250 1979, IT250 81 Inner tube dia 38mm x 650-700mm long  (Read 1270 times)

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Offline oldyzman

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Hello Guys,
The forks on my yz250 have just been re-assembled after a placing new seals, I cleaned them out and used 15 wt oil. one works fine the other seems to work well when compressed slow but when compressed fast it seems to feela bit like a stapler- this happens at different ranges of the forks, I then swapped the inner tube from the good one to the bad and that fixed the problem. The chrome is getting was bit thin down the lower end. I also removed the inner tube and fine honed the inner of the fork tube with lite scothbrite as there seemed to be a bit of pitting inside, this seemed to help the prob a bit. Any ideas guys. Or does anyone know if there is a fork inner available some where.
OLDYZMAN
I have a soft spot japanese mxers with aluminium tanks. Two stroke classic Dirt Track...

Offline LWC82PE

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« Last Edit: April 06, 2009, 10:32:37 pm by LWC3077 »
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline oldyzman

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Re: Wanted YZ250 1979, IT250 81 Inner tube dia 38mm x 650-700mm long
« Reply #2 on: April 07, 2009, 09:29:52 pm »
Thanks LWC will check it out. do you think the pitting on the inside of the inner tube will matter much as the dampener plunger euns in there.....
I have a soft spot japanese mxers with aluminium tanks. Two stroke classic Dirt Track...

Offline LWC82PE

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Re: Wanted YZ250 1979, IT250 81 Inner tube dia 38mm x 650-700mm long
« Reply #3 on: April 07, 2009, 10:15:32 pm »
oh i missed that. how bad is it?
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline Nathan S

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Re: Wanted YZ250 1979, IT250 81 Inner tube dia 38mm x 650-700mm long
« Reply #4 on: April 08, 2009, 10:10:06 am »
I've probably got a nice pair of forks spare.
Will have to wait until I get home on Friday arvo to check.

Call me sometime over the weekend and I'll check for you.
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Offline oldyzman

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Re: Wanted YZ250 1979, IT250 81 Inner tube dia 38mm x 650-700mm long
« Reply #5 on: April 12, 2009, 08:12:38 am »
The pitting is not too bad< I honed the inner of the inner with lite scothchbrite. seemed to make it better. But not perfect.
I am really after a couple of inner tubes for yz250f only as the IT ones previously mentioned have a slightly different setup. As the YZ ones do not seem to have the lower metal slide bush on them, is this normal or is something wrong?
Cheers Brett
I have a soft spot japanese mxers with aluminium tanks. Two stroke classic Dirt Track...