other cams and ignition advancer => less power... - Page 2 - SV650.org

northwind · 01-09-06, 09:54 PM

You didn't say what make of dyno and what sort of figure that is... Also, what mods you've already done. 73bhp at the rear wheel's absurdly strong for a stock bike, if that's what it was... If the runs were done even a day apart you can get a big difference too, I was once in YPE and someone was complaining that they hadn't hit 160bhp. "Bring it back on a colder day" was the answer

02-09-06, 09:05 AM

I presume your dyno runs were done on corrected figures which allow runs performed on different days to be comparable. Although with a dip in the power as you have described i doubt this would be an issue.

Tight clearances can cause the problem, but more likely cams not being in quite right can be the main cause. Were they done to the spec in the diagram as TSM says?. If not then this is possibly the cause.

01-09-06, 09:54 PM	#11
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	You didn't say what make of dyno and what sort of figure that is... Also, what mods you've already done. 73bhp at the rear wheel's absurdly strong for a stock bike, if that's what it was... If the runs were done even a day apart you can get a big difference too, I was once in YPE and someone was complaining that they hadn't hit 160bhp. "Bring it back on a colder day" was the answer __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

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02-09-06, 09:05 AM	#12
SV650Racer Guest Posts: n/a	I presume your dyno runs were done on corrected figures which allow runs performed on different days to be comparable. Although with a dip in the power as you have described i doubt this would be an issue. Tight clearances can cause the problem, but more likely cams not being in quite right can be the main cause. Were they done to the spec in the diagram as TSM says?. If not then this is possibly the cause.