Stan, and interested parties---I don't know why the 6 lb. of boost would
only yield 39 additional hp on the Moss setup. I wouldn't think the SC's
belt drive should cause this much parasitic drag at the crank.
Typically, one can expect about 10 additional hp per lb. of boost, up to
where air density is compromised at higher boost pressures. (At least
this is true with turbocharging.)
Generally speaking, 6 lb. should cause no problems with any stock
components...cooling, bearings, drive train, etc. As previously
mentioned, one can't drive around with the engine "on boost". You would
simply be going too fast. Short bursts, (like 14.2 seconds ; } ) should
never show up on the temperature gauge.
Most SC setups do not make boost under high engine vacuum conditions, so
no extra heat is made, nor should (much) extra fuel be consumed. Pretty
much the same for turbos, altho some different rules apply.
So far as why Moss chose to use the Holley carb over the big SU...The
Holley does have the squirt valve, which is nice for the quicker
coming-off-idle power bursts. The late, AK Miller used the Weber-Holley
on all of his turbo-propane conversions.
I'm still wondering why Moss chose to not clean up the engine and
surrounding areas, before showcasing their handiwork in their BM
catalogue.
Dick
From:
stan.foster@hp.com(Foster, Stan)
I did wonder about the cost/benefit and if that was a good route to
take. For the TR6 they claim an extra 39HP for $3500, so close to $90
per HP. I guess one advantage is that it just bolts on more or less.
Really appreciate Moss's innovation and investment though.
Stan
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