With a bit of work the block can take a 640 XL cylinder, and the frame goes nice with a ZXR400 USD front end, and some rear shock treatment, adn a custom stainless exhaust, apparentlyHenry Dorset Case wrote:FLATULENTFRIEND wrote:cooper770 wrote:FLATULENTFRIEND wrote::) Mmmm...motorbikes.
All I have at present is a Yamaha SR500 single roadie that I've had for 12 or 13 years that I'm slowly turning into a Brit cafe racer replica.
I'm rebuilding a Honda GB500 TT at the moment.![]()
Ive been a rider since I was 12, when I got a Dot scrambler to race on the beach. From there I've had Vespa, Triumph, Norton, Suzuki Katana, Kawasaki triple (death trap!) RD Yamaha and just sold my MV. Kind of had to as the wifey was not best pleased with the idea of me riding now with having broken my neck once alreadyNo sense of adventure !
broken neck! Yek.
Wow, you've had a lot of bikes.
I really like the look / idea of the GBs too. I really like the 3/4 fairings but its strange how the less powerful 400 came with them but the 500 didn't.
My idea would probably be a GB 400 with 3/4 fairing and Yamaha SR500 (worked) engine
you are better off working on the stock Honda motor. there are a ton of them round as well: they can be made to go out to 580cc relatively easily. The Honda has a 4 valve head so will brethe better than the SR particularly at higher revs. You need to machine the cases a little etc. cruise over to Kiwibiker.co.nz and search the forum for the thread of the guys who have modded them:there are at least two I can think of. The guy who owns the site has a maroon one. As an incentive, there is a picture of it with some asian chick, topless perched on it somewhere on the site. She shore is purdy.
The very first new bike I ever bought was a silver GB400TT Mk 2, in 1987. it had the fairing and single seat. there was also a 400 version with no fairing and the dual seat, and the 500. There wasnt much difference between the 400 and 500 in on-the-road performance, and they both handled very well even on stock suspension.

wish I had of kept that ol girl and rebuilt her once I destroyed the engine :-(