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-   -   New to the yz490 looking for help (http://www.allthingsmoto.com/forums/f-30/new-yz490-looking-help-63695/)

Wolff490 06-29-2014 10:07 PM

New to the yz490 looking for help
 
So I just got a 1982 yz490 starts awesome runs awesome but forks are soft and massively leaking oil so I was woundering if the seals are hard to replace and if I should get stiffer springs? Also a good rear spring is in order I think as it is quite soft aswell, Any thoughts as to a good spring/fork kit? I'm 6' 150lbs. Skiny for a bike this size but it was to good to pass up :)

Thanks for any info.

arnego2 06-30-2014 07:13 AM

Leaking forkseals are often just dirty, a plastic or firm carton strip running between fork leg and seal cleans dirt off pretty good.

Randog Leader 06-30-2014 09:20 AM

If it is a small leak, probably. But based on the age of the bike and the word "massive", I would tear them down and replace the seals if I were you. Soft could be from all the lost oil in the forks but then again, the springs may be sacked out from the age of the bike. Measure the free length of the springs while you have the forks apart and compare to spec.

---------- Post added at 09:20 AM ---------- Previous post was at 09:18 AM ----------

Also, be sure to run your fingers along the fork tubes and check for any burrs that may be causing the leak. Small ones can be buffed away but large ones indicate new fork tubes in your future.

TRexRacing 06-30-2014 01:03 PM

I have an '82 490 front end on my '80 YZ465. It has a set of RaceTech cartridge emulators and triple rate springs set up to RaceTech's specs. Huge improvement I highly recommend to anyone who's going to ride a vintage YZ.

Wolff490 06-30-2014 10:53 PM

Quote:

Originally Posted by TRexRacing (Post 714270)
I have an '82 490 front end on my '80 YZ465. It has a set of RaceTech cartridge emulators and triple rate springs set up to RaceTech's specs. Huge improvement I highly recommend to anyone who's going to ride a vintage YZ.



That sounds nice, I was kinda thinkings bout that set up. If you don't mind saying how much we're they? Also I have valve stems at the top of my shocks, is that factory and if so what pressure would I run?

TRexRacing 07-01-2014 06:06 AM

Less than $300 in parts. I run zero pressure,just use 'em for pressure release.

Wolff490 07-01-2014 09:26 AM

That's not to bad at all! Thanks


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