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the numbers are pretty much the same as in the publication from the 70s. Since I ran the bike on the dyno, I have put in a shell#1 cam, 700cc JE kit from Hoos, mild port and KW valve springs by R&D moto, vesrah clutch springs, 1.75" pipes and K&N airfilters, . Will dyno again after break in.
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Very curious to see what sort of difference you're going to attain.
here is an update on the project: https://www.xs650.com/threads/dyno-of-700cc-kit-with-a-shell-1-cam-on-a-78xs650e.65405/#post-819832Very curious to see what sort of difference you're going to attain.
There is a curious "hiccup" at 5800rpm. It exists in the cammed 700cc motor and the stock 78 motor (on a thread elsewhere) that I noticed. Since cam, displacement, and porting are different, a curious one asks questions. Is it valve stem shape? Is it intake port length? (exhaust had been stated as different). Curious minds...
I shift before 5500 so I would never notice.
I shift before 5500 so I would never notice.
i think it was richness at the needle to main transition. with the stock exhaust, the sniffer could not reach deep into exhaust, so i cannot trust the A/F readings, but you can see the motor blow black smoke around that time. on the new motor, i think it is the opposite: lean hesitationThere is a curious "hiccup" at 5800rpm. It exists in the cammed 700cc motor and the stock 78 motor (on a thread elsewhere) that I noticed. Since cam, displacement, and porting are different, a curious one asks questions. Is it valve stem shape? Is it intake port length? (exhaust had been stated as different). Curious minds...
I shift before 5500 so I would never notice.
