GS500 into RGV frame

[Guest]

Just a quick Hi to introduce myself. I have an old RGV frame and wheels etc, and one day found an article about a GS racer with GSXR head. After a few beers and playing with a tape measure, I hatched a plan................

[GregT]

Interestingly tight....The final drive sprocket and swing arm pivot need to be as close to level as you can get them.
With the finning cut back as much as it appears to be, an oil cooler would probably be wise - but it's very hard to do on the twins.
Have you got the width in the frame for the carbs ?

[diesel2]

Hi Greg, I just cut the fins on a scrap engine to see how much room there was, and guesstimates from my Bandit suggest that with an oil cooled head, it should be possible. I have the old RGV crankcases, and I'm trying to match the sprocket location, and see how much room there is. To do this the rear/top crankcase on the clutch side needs a chunk taking out, and the rear top mounts on the frame need to come off (need new one's anyway).
So now the question is what to do to the motor? I've been looking around for idea's, such as a GR650 crank, going back to roller bearings (older GS cases) so I can build up a 270 degree crank?, finding a bandit head, gsx1400 barells, ..........the possibilities are many, but maybe I should just aim low for now, and get something running for a cheap track-day bike. Not sure about fuelling yet, one step at a time!

[diesel2]

another pic

[limeex2]

Just happen to have a RGV frame laying around? Huh Huh....cool. If your willing to try to stuff a GS500, your engine choices are many. YZ450F = 50 hp? Banshee = 100HP