At 08:38 AM 3/1/99 -0500, Roger Beasley wrote:
> I have a friend here in Ft. Myers, Fl who owns a Dynojet Dyno and he had
>encouraged to put my TR4 vintage racecar on it.
Wow! That is a really neat process.
FWIW I offer the following: Last year when I rebuilt my mildly modified
TR-4 motor, we put it on a dyno principally to work on the timing and
carburation adjustments. In an effort to be somewhat street inoffensive
(and HSR legal), the standard exhaust system I use is 2.25" piping with an
el cheapo see-through Midas cherry bomb type muffle right behind the
exhaust pipe hole in the frame. We did our horse power testing with the
entire system in place. At the encouragement of one of the never ending
string of "advisors," we tested the system after taking the muffler and
tail pipe off. We found no discernable difference in horsepower. But keep
in mind that we did all of our HP testing at 5500 RPMs. I expect that
exhaust volocities and pressures increase precipitiously as you guys go
north from there.
If I had known about the crayola trick, I would have loved to have tried it.
Richard Taylor
Atlanta
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