In message <9311091336.AA29096@elegans.wustl.edu> John Lye writes:
>
> David Brady proposes the formula:
original stuff deleted
Well, my TR-4 uses
> stock rods (lightened and balanced, but TR parts), normal aluminum
> pistons, standard piston rings, etc and I used to shift it at about
> 6700 rpm or so until I put a rev limiter on it set to 6250 - its
> about to get re-adjusted upwards to about 6700 again, since I'm
> running into the rev limiter before I'm running out of power. Even
> with the higher shift point (ie pre-rev limiter), I've never broken
> a rod, piston ring, etc. I also know of quite a few other TR racers
> who routinely run their engines above 7,000 rpm. So, I'd have to
> say that this "RPM Limit" is a bit conservative if any time has
> been spent on tightening up the factory tolerances.
>
> John
> HOAN Racing and Rent-a-Racer
OK John. We all know that the Factory did not allow factory TR race cars to rev
above 5000 RPM. That the TR2-4A crank traditionally breaks near the flywheel
attachment flange around 5200 to 5500 RPM.
So what are you doing to keep the crank together at high RPMs????
My new cam should top out at about 6000 RPM and have a 500 or so RPM flat spot
at the peak. I"m installing a nitrided crank with a harmonic balancer on a
balanced engine. What did you do to get over the traditional TR crank speed
barrier??
Eagerly awaiting your reply,
TeriAnn
>
TeriAnn Wakeman One of these days, I'll be old enough that
twakeman@apple.com people will stop calling me crazy and start
LINK: TWAKEMAN calling me eccentric.
408-974-2344 TR3A - TS75519L, MGBGT - GHD4U149572G, 109 - 164000561
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