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Posted
mine runs 19cc at 169 psi at sea level. I run 50/50 race at 100 octane.

 

Check your stock compression now and report back.

i am about sea leval with 19cc domes +4 timing and i run 110 race monster fuel

Posted

If your are between sea level and 1000 feet from sea level with the 98 octane fule:

From the refernce table I have seen, I will have to say 19cc 0r 20 cc domes. But the best way to know is to test the bikes compression. :blush:

Posted

19cc domes at sea lvl should be around 180psi on a stock ported motor... It would probably most likely require race fuel.. My duner motor used 19cc domes and I used 110 Cam2. If it were me and the highest octane I could find was 98.. I'd get 20cc domes.

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