Was :Re: Effect of Flywheel Weight for Bikes and Cars
What about exhaust scavenging?
When the piston reaches TDC on the exhaust stroke
a properly tuned extractor will be producing a negative
pressure during overlap with wide open throttle.
I believe Dave's oil system theory is correct. If you
want to scare the hell out of yourself, put sight glass
on a wet sump oil pan and bring the RPM up to 80% of
redline for 30 seconds.
Bryan (back to my hole)
ardunbill@webtv.net wrote:
>
> Dave, I agree the pressure in the exhaust system with open pipes will be
> minimal, but it must be more in the cylinder. The exhaust valve and
> port are a restriction and the piston is pumping. Cheers Bill
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