Hi Unknown. Is that at calculated VE ambient or from Zero ambient+hum%.
I think the calculus is VE over am-........Well you know. DK.
David Massey wrote:
>
> Message text written by Don Kerr
> >
> Hi Joe. I have run any number of forced induction engines in my half
> century on this rock and without exception
> the car/bus/semi/m-cycle et al all used a factory cam. Exceptions to the
> rule, sure ,how about drag vehicles or off shore power boats etc.The
> idea is to keep your chug around drivability but to have the benefits of
> a larger engine at positive boost .Always run a stock cam, or copy of
> same,with a performance cam the blow through will hurt your mileage and
> so waste fuel.Why do it?Diesel engines do not use long duration cams to
> make power, they are boost pressurized up in the 20's lbs psi,(admittedy
> intercooled.)OTR semi's develop 4 to 600 hp at 1800 rpm.My motorcycle
> 750cc was 180 hp + at 11500rpm.My old VW bus churns out 150 or so at
> 5000rpm.
> Try your local library on turbocharging or forced induction. Regards
> DK
> <
>
> Folks,
>
> Don't forget that we are now dealing with a denser fluid here and all the
> calculations change. A camshaft optimised for airflow at 14.7 PSIA will be
> not be optomised when the air is at 30 PSIA. The air is now denser and
> responds differently.
>
> Dave Massey
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