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I did it the other way around, I tried to put a WR pipe on a 490, I got the pipe on and we will just leave it at that haha

On the clutch basket Ebay is about the best bet. On the Cylinder, will a hone clean up the rust, if it's just surface rust it might, if not you could get the cylinder nikasiled and that way you can just keep putting the same size pistons in it when you do top ends.

I worked on bikes over the weekend and I took the pipe off mt WR and tried to put it on a 490, the pipe will fit although the spring mounts seem to be further out but the silencer mounts differently so it will not line up with the mounting holes so shue415 is correct the pipes will not interchange.

Yesterday evening, seeing as how the frame is at the powder coaters I cleaned up some of the bigger parts and went through the wheels and mounted up some new Bridgestone Tires & tubes, I also mounted a new EBC front rotor and rear Renthal Sprocket so things are getting done a little bit here and a little there so...

As far as I remember the pipe that is on my WR is off a 490, I had a couple and just put it on when I redid the bike.

I dunno about all that, the 490 thing just kind of happened basically I'm just a dude that loves motorbikes and I may be a bit partial to Yamaha's and Cagiva's and TM's.

I got busy and washed the thing up pretty good and stripped it down to a bare frame so that I can get the frame out to be powder coated.

I guess that was the idea with the WR500 when it came out, but I think it cost $100 more than a CR500 or was pretty close to the price of one back then which I would think hurt sales.

They seem to find me for the most part, I bought my first one in 2004 and back then it was pretty common to find one running for $300 or $400, now they are more but still the most I have ever paid for a 490 or a WR was $800 which is what I had to give for this...

Hoarder is such a strong word lol, I just buy stuff that I think I'm going to need to keep these things running, everything I build or fix up I ride and race and on these old things when you race them they always need something. The problem is nowadays parts are as cheap or as easy to find as...

I have some trick parts but I don't want to get rid of any as I have so many of these things, I have 2 more 83's, an '84 and another 86 and I'd like to get another WR at some point, so I need to keep everything I have, not to mention keeping on top of what I have...

Race gas helps a ton, a good pipe helps even more and if that doesn't stop you can remove the paint from the dome of the head or get the dome modified.

I think so too, seeing Bradshaw in the mags on one when I was growing up did it for me

Thanks for the offer but I think I have what I need for the most part, I have a bunch of 490's and a WR500 so I have collected parts and pieces over the years. I dunno what it is about these things that I dig.