Dick,
thanks for your, and indeed all who replied, insight into what it takes to
challenge an SI. I suppose the scientific thing to do would have been to give
my SU's a turn or two clockwise and then go for another run with this chap.
Funny thing human emotion...I wasn't feeling too much like testing and tuning
at that point. I suppose I'll hook up the old O2 sensor again and recheck the
fuel/air at the speeds and rpms I was hitting yesterday. Does anyone know of a
sports muffler in the original configuration of the TR6 stock can?
Thanks to all,
Geoff
tr6taylor@webtv.net (Sally or Dick Taylor) wrote:
>Geoff---The SI is one of the lighter Hondas, and about equal in weight
>to the TR6. No advantage here. (One son had won the West Coast Regional
>Solo 1 in his '87 street prepared SI a few years back, so I know they
>can really scoot!)
>
>These cars are not known for their hp, but take advantage of what they
>have thru a nicely spaced 5 speed tranny. The first three are much lower
>than the TR's. Also, I've always thought the ratio between second and
>third was too large in the TR.
>
>Coefficient of drag is known to be better in the SI, as just about
>anything short of a barn door slips air easier than the TR's Cd of .39
>(top up). We know this hurts as speed increases.
>
>However, you should have enough of a horsepower advantage to have held
>him off longer than the end of second gear. The cam you have should be
>good for a 5500 shift point (as would the S2, Brooks)
>and this would help get you into a more favorable rpm when you hit
>third.
>
>Others may say you could use more "carburetion", either air, fuel or
>both. What does you 02 sensor indicate at the upper limits? For best
>power you should be seeing an A/F ratio of 12:1.
>
>Who was it that said "too much power is never enough"?
>There will always be a car out there to beat you.
>
>Dick
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