Bad cams?
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Joined: Jul 2011
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From: Bow NH
Bad cams?
Here is my story. Last year I installed a fuel moto 107 kit with 777 cams, level b heads. I've had a power vision for several years and love it.
So I spent most of last year trying to get it diled in but had some trouble. Took to well known dyno tuner and got really bad results. Like 80 hp and not much over 100 tq. Far off from the 110-115 hp it should be.
Bike seemed to run great at first but as summer temps came I got a ton of detonation. I could make it go away using power vision but I had to pull all the timing and add a bunch of fuel. So over the winter I took to mechanic to take a look at and see what I did wrong. All we found was one of the cylinders was junk from heat so we put new 110 cylinders on and fuel moto warranted the junk set. (Thank you much for that.)
so now for my current setup. 110, still level b heads, still 777 cams, 58 mm tb, and Vh high output mufflers with vh power duel head pipe. Guy that did the work couldn't tune with pv so we used sert this time. I go on my first ride on 80 deg day and guess what ping, ping, ping. Wtf!!! I take it back we pull timing till it stops. 6 deg. Numbed it back out like I did last year.
Any thoughts what could be causing this kind of prob.
Fuel moto is very helpful but I work 50 hr a week and there 1100 miles fro me so I have a hard time getting in touch with them.
Thank you
So I spent most of last year trying to get it diled in but had some trouble. Took to well known dyno tuner and got really bad results. Like 80 hp and not much over 100 tq. Far off from the 110-115 hp it should be.
Bike seemed to run great at first but as summer temps came I got a ton of detonation. I could make it go away using power vision but I had to pull all the timing and add a bunch of fuel. So over the winter I took to mechanic to take a look at and see what I did wrong. All we found was one of the cylinders was junk from heat so we put new 110 cylinders on and fuel moto warranted the junk set. (Thank you much for that.)
so now for my current setup. 110, still level b heads, still 777 cams, 58 mm tb, and Vh high output mufflers with vh power duel head pipe. Guy that did the work couldn't tune with pv so we used sert this time. I go on my first ride on 80 deg day and guess what ping, ping, ping. Wtf!!! I take it back we pull timing till it stops. 6 deg. Numbed it back out like I did last year.
Any thoughts what could be causing this kind of prob.
Fuel moto is very helpful but I work 50 hr a week and there 1100 miles fro me so I have a hard time getting in touch with them.
Thank you
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Joined: Jul 2011
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From: Bow NH
Hi Scott. I'm not sure as I didn't put it together last time. Ill Have to check it tonight. Should be around 180 I think.
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From: Bow NH
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Joined: Jul 2011
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From: Bow NH
Two dyno tunes from different shops and the same experience.