Anybody built a 637cc F2?
#21
#22
What did the 2 Brothers build consist of? In an old Sport Rider magazine they got to ride on Ontario Racing (Ontario something, I forget exactly) F2, it was bad as hell. Had ram air, clip-on below the clamps, etc. This was before F3s came out. I want to say Kas Yoshima was the builder but dont quote me.
#23
Squale- You recommend lightening the crank for street use? I want this build to be Street/Track ready, but not have to rebuild it 6 month later either. Also, can you forward the article of the build to me via PM?
The F4i pistons are a cheaper replacement of 66.48mm aftermarket piston, but the cylinder wall needs to be bored out to 67mm, 2mm over spec, leaving .52mm for clearance. 'BUT', F4i is 12:1 compression versus the Wiseco 13:1 compression or JE Pistons 13.5:1 compression. Stock F2 is 11.5:1 compression in case anyone was wondering. Giving .5 compression more over 2mm larger pistons.
The F4i pistons are a cheaper replacement of 66.48mm aftermarket piston, but the cylinder wall needs to be bored out to 67mm, 2mm over spec, leaving .52mm for clearance. 'BUT', F4i is 12:1 compression versus the Wiseco 13:1 compression or JE Pistons 13.5:1 compression. Stock F2 is 11.5:1 compression in case anyone was wondering. Giving .5 compression more over 2mm larger pistons.
#24
What did the 2 Brothers build consist of? In an old Sport Rider magazine they got to ride on Ontario Racing (Ontario something, I forget exactly) F2, it was bad as hell. Had ram air, clip-on below the clamps, etc. This was before F3s came out. I want to say Kas Yoshima was the builder but dont quote me.
Last edited by squale147; 11-20-2011 at 09:24 AM.
#25
I have talked with fellow riders at work and hear the same responses; "My Kawl has 116Hp" or "my R1 has 170Hp", "why build a motor with only a 110WHP?". My answer, "I would rather say, I built that, not bought it". I feel confident I am going to appreciate this bike even more than I already do. Again, I can afford a new bike. Like the R1 or Triumph Street Triple 675R, but my Ratted Out CBR has way more charecter. Plus it is built to my exact needs in the twisties. It doesn't matter what it looks like at 80+MPH.
My wife gave me the ok to start the project. She wonders what to call it with the F4i pistons and the F3 conversion already. I said the 'F234', hokey but it works. LOL
My wife gave me the ok to start the project. She wonders what to call it with the F4i pistons and the F3 conversion already. I said the 'F234', hokey but it works. LOL
#27
#28
I have talked with fellow riders at work and hear the same responses; "My Kawl has 116Hp" or "my R1 has 170Hp", "why build a motor with only a 110WHP?". My answer, "I would rather say, I built that, not bought it". I feel confident I am going to appreciate this bike even more than I already do. Again, I can afford a new bike. Like the R1 or Triumph Street Triple 675R, but my Ratted Out CBR has way more charecter. Plus it is built to my exact needs in the twisties. It doesn't matter what it looks like at 80+MPH.
My wife gave me the ok to start the project. She wonders what to call it with the F4i pistons and the F3 conversion already. I said the 'F234', hokey but it works. LOL
My wife gave me the ok to start the project. She wonders what to call it with the F4i pistons and the F3 conversion already. I said the 'F234', hokey but it works. LOL