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76Datsun280z

Horsepower estimate

8 posts in this topic

I don't have the numbers right off hand, but I think I recall somewhere in the ballpark of 5 to 10 percent over stock sounds right with intake opened up, rejetted, and a good exhaust. Numbers don't matter much to me, if it is fast enough for you then it must be enough

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Rear wheel horsepower on a dyno was 38.4 for a bike almost just like this one. Stock just off the show room floor was 29.7 1996 XR650L Later with a 10.25:1 102.4mm piston cam, open header/muffler was 48.7

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[Probably 1/3 less than your dads 86 xr600 because a 650l holds a 1/3 less oil than your dads xr600. Don't take it personally, just kidding./QUOTE]

My dad does not own an 86 xr600, he did own an 84'xl600 that he sold last summer.

I'm just going to leave this forum if you guys keep this up.

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