I beleive that Suzuki was racing a 920cc 750 in Superbike prior to racing the 1000 based bike. Possible that was in the class preceding Superbike.
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sigpic Too old, too many bikes, too many cars, too many things
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The first Yoshimura GS race bike was a 944cc '77 GS750. Pops Yoshimura hand modified 73mm Honda pistons to fit the GS head. I believe they must have re-sleeved the block, as 72mm 920cc is the limit of what I'd feel comfortable with running reliably based on the thickness of the 850 sleeves after I bored them to 920cc.
Of course the Wiseco 844 69mm kit is approved to bore straight into the 65mm bore stock gs750 sleeves for +4mm overbore.
Last edited by Chuck78; 03-21-2017, 11:01 AM.'77 GS750 920cc heavily modded
'97 Kawasaki KDX220R rugged terrain ripper!
'99 Kawasaki KDX220R rebuild in progress
'79 GS425 stock
PROJECTS:
'77 Suzuki PE250 woods racer
'77 GS550 740cc major mods
'77 GS400 489cc racer build
'76 Rickman CR1000 GS1000/1100
'78 GS1000C/1100Comment
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