Reinhoud Posted April 23, 2019 Posted April 23, 2019 Gents, when going turbo, is an undercut gearbox needed? I didn't have problems before blowing up my engine, done about 3000km with her.. It's a GS1000, estimated 225HP on the crank, before I put the engine together I'd like to know what's wise... Thanks Quote
Gixer1460 Posted April 23, 2019 Posted April 23, 2019 Certainly not but it is a nice thing to have - missing a gear through bad engagement or slipping out is never wanted. 1 Quote
Reinhoud Posted April 23, 2019 Author Posted April 23, 2019 Thanks, I had a DR500 from 1981, worked up to about 55HP, I needed another gearbox about every year, one mis shift was usuallu enough to stuff it up.. That's why I'm a bit insecure about it.. Quote
Gixer1460 Posted April 23, 2019 Posted April 23, 2019 6 hours ago, Reinhoud said: Thanks, I had a DR500 from 1981, worked up to about 55HP, I needed another gearbox about every year, one mis shift was usuallu enough to stuff it up.. That's why I'm a bit insecure about it.. If it makes you feel better, my 1460 GSXR is still using a std cut 'M' gearset! Quote
Ibbo Posted April 28, 2019 Posted April 28, 2019 My efe started jumping out of second under load with std gears not long after it got to 200hp. The engine had been stripped, and 2nd gear checked, and welded prior to being tuned. I would suggest you should consider getting them undercut. I think i would if doing it again. Quote
Reinhoud Posted April 28, 2019 Author Posted April 28, 2019 9 minutes ago, Ibbo said: My efe started jumping out of second under load with std gears not long after it got to 200hp. The engine had been stripped, and 2nd gear checked, and welded prior to being tuned. I would suggest you should consider getting them undercut. I think i would if doing it again. Was yours jumping out of gear, or was the sprocket slipping over the shaft? I have my 2nd gear welded.. Quote
Gixer1460 Posted May 2, 2019 Posted May 2, 2019 2 minutes ago, Ibbo said: The sprocket was welded on. Bodging of the 1st order! That'll be interesting come chain & sprocket replacement time! Quote
Reinhoud Posted May 3, 2019 Author Posted May 3, 2019 17 hours ago, Gixer1460 said: Bodging of the 1st order! That'll be interesting come chain & sprocket replacement time! Sprocket welded on the shaft of the gearbox, stock 2nd gear is just pressed on the shaft, but with a lot of power the sprocket slips Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.