Re: [Amc-list] scavenging in a stock exhaust system?

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Tom Jennings <tomj@xxxxxxx>
" 
" []
" 
" Question: is there any likely scavenging benefit possible from running 
" something like 48" of skinny pipe (like 1.75") down from the manifold, 
" then dump into larger 2" - 2.25") from muffler to tailpipe? Keep in mind 
" this is a small engine that spends most of it's time 2000 - 2800 rpm 
" (hence the 48" number).

i've read that if you double the pipe diameter at the step, it's
effectively much like running a straight pipe that long.  you'd have
to go about to 3" for the rest of the system though.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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