One thing you have to consider is that a factory turbocharged or
supercharged engine has a very low compression ratio (not counting the
boost anyway) when compared to its naturally aspirated counterpart. If
they had the same compression it would make quit a bit more power but be
a lot less reliable, well according to the engineers anyway.
Erich
1998 v8 5spd ext. cab
Shaun.Hendricks@bergenbrunswig.com wrote:
>
> Not to toss another monkey wrench in this discussion but I'm kinda curious.
>
> I know that the turbo charger on my last car would deliver up to 16psi
> boost (at which point the bleed valve kicked in) when the engine was under
> it's maximum load. The standard engine w/o turbo delivered 130hp. With the
> Turbo it delivered 174hp. If 1psi=20hp then that little 4 banger should've
> been delivering 300+hp so I don't really buy that calculation.
> The next question would be, comparativly, how much does a supercharger
> cost vs. a twin turbo arrangement. The 5.2/5.6 is more than capable of
> driving two turbochargers (I wonder if Banks makes a kit for the 318/360).
> The supercharger would deliver it's psi almost immediately, but the turbos
> deliver more air through the mid and high power band. Having owned a turbo
> charged vehicle, I can say this for certain: the damn things are a pain in the
> tush, but man does it motivate an engine! Does anyone have a turbo-charged
> V-8?
>
> Shaun H.
> Tustin, CA
>
> -----original message--------
> In a message dated 98-09-09 22:31:07 EDT, you write:
>
> << Somebody help me make a decision. How much gain from
> hood? Blower? Maybe both and hook up the ram air hood to a intercooler.
> I hear if you use an intercooler you don't need a spark retard box and get
> more usable power with less strain on the engine!
> Jim in Waco. >>
>
> Gains from a hood = looks, less weight (sometimes), maybe 20hp if it's
> functional.
>
> Vortech S-trim in kit form gives you more looks too (everyone likes to hear it
> whine...:)), and about 5 times as much as a hood would give you. FWIW, I got
> ~120-130hp from mine at 5psi. More horsepower and torque are just a pulley
> change away.
>
> At 5psi, you won't need much (if any) spark retard.. even w/o an intercooler
>
> ttyl
> Patrick
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