Flyboy Dave
Posts: 13306
Joined: 3/20/2002
From: San Bernardino County,
CA, USA
Status: offline
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.....yes, that would indicate as such. The state of tune is what I would look at to set up a pipe.
For instance, using the MAS 11-7 1/2 prop (a standard on 60 engines for decades) a K&B .61
will turn it a t 12,000 flat....an OS .61FSR will turn it at 14,000 flat....a totally different state
of tune. Therefore I would use a longer pipe on the K&B and try to enhance to torque of the
engine, and on the OS I would use a shorter pipe and drag every last ounce of RPM and HP
out of it.
This is what I have been getting at from the start. Piping it to scream it's guts out may make
it blow in a short period of time. On the other hand, if it was a torgue motor, and you propped
it as such, it might last a long time (low rpm). 
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Revver Bro #4.
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RE: Hi Perf Russian 10cc at a bargain price! - 
