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Post by norcalacr on Jun 17, 2009 9:12:08 GMT -5
I wasn't sure there is enough space under the baffle and the side cover was already off. Plus with the stock CA exhaust it's pretty tight around the rocker cover.
I thought about adding a fuel filter.
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Post by paulskirocks on Jun 17, 2009 9:36:35 GMT -5
From all I have read on Bob's 4 Cycle, those stock exhausts gotta go if you want the motor to work right...
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Post by brad42 on Jun 17, 2009 10:07:22 GMT -5
You have to be extremely careful about what you read on Bob's 4cycle. Don't get me wrong, I love the place and have made many many friends there. However the site is mostly inhabited by oval racers who only need a powerband 1000 RPM wide, and they are in those layback seats and 42 inch wide chassis.
The stock clone muffler burns the driver in those layback seats. I have seen claims that the Briggs muffler is good for 1/8 of a horsepower on a computerized dyno. That would be great if we were dyno racing.
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Post by paulskirocks on Jun 17, 2009 10:14:29 GMT -5
Very true, Brad. If I had a grain of salt for everything I have read, I would have high blood pressure!
Still, my guess is uncorking it with a different exhaust would be an improvement...
Happy Racing
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Post by silverback on Jun 17, 2009 16:29:08 GMT -5
Most of the guys on bobs are "dirt oval racers"!!
as an "asphalt oval racers" I have to say, if your good you only need 500 rpm power band. LOL
on my dyno, there is a little over 1hp difference from the stock muffler to a 1" pipe 14" long . I have not tried any pipes longer then that.
I have done some engines for you guys that turn right too, and they say bigger is better.
Later,
4racers.com/clone
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duffy
Full Member
Posts: 205
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Post by duffy on Jun 18, 2009 12:02:09 GMT -5
Watch out the clones are coming back to Davis..Looking to race and have fun. See you Sunday the 21st, Fathers day. ;D
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Post by paulskirocks on Jun 18, 2009 12:17:13 GMT -5
Right on! 4racers.com found our sandbox...
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