Turbo vs. Supercharger.

[nealtovsen at yahoo.com (Neal Tovsen)]

>From what I've read, nitro methane (and alcohol) cools
the air/fuel mixture so much and is so
detonation-resistant that intercoolers aren't needed.
And though I'm sure they've tweaked the design as much
as possible, those blowers (REAL
"blowers"...non-internal-compression roots
superchargers) are said to eat up over 1000hp in
parasitic drag. Just look at the belt they have to
run!

As I mentioned, the real reason they don't use turbos
is because they aren't allowed to.

There's an Integra "funny car" that is producing much
more HP per Liter displacement than a true NHRA Funny
Car. It's all based on NHRA technology (custom
large-bore casting, huge bearings, massive head
retainers, etc) but in a 4-cyl turbocharged format.
Makes you wonder what would happen if they
turbocharged a big-block V8...could they even find a
way to use it?

Neal

--- Dan Bubb <jdbubb@ix.netcom.com> wrote:
> Well, that's the exception! It is a fact that
> superchargers have much worse
> efficiency than turbos. But, clearly, in this
> application it works. Maybe
> they don't care how much power it takes to turn the
> super and maybe
> nitromethane works really well at really high intake
> air temps. Or maybe the
> air temp doesn't matter when you're pumping as much
> mass fuel flow as mass
> air flow!!! (not really but close ;^)
> In any event this really is the exception and NOT
> very relavent to street
> applications.
> I stand corrected on the point though.
> Dan
> 
> 
> ----- Original Message -----
> From: L F <rocco16v@netzero.net>
> To: Dan Bubb <jdbubb@ix.netcom.com>; Mike Smith
> <smithma7@yahoo.com>; car
> <scirocco-l@scirocco.org>
> Sent: Monday, June 30, 2003 8:14 PM
> Subject: Re: Turbo vs. Supercharger.
> 
> 
> 
> 
>   A million opinions!
>   Superchargers tend to be less efficient
> particularly at higher pressure
>   ratios. So, they aren't as good at making really
> high power.
> 
>   YOU'D BETTER TELL THAT TO JOHN FORCE, HE COULD USE
> SOME ADVICE ABOUT NOW.
> 
>   OTOH a big really high power laggy turbo is the
> last thing you need for an
>   autocross car. Superchargers, particularly
> positive displacement types,
> have
>   fast response.
>   The primary issue then is quick response vs. power
> producing capability.
>   There are a million secondary issues!
>   just my .02
>   Dan
> 
>   AS FOR THE REST, I WHOLEHEARTEDLY AGREE WITH DAN.
>   HAVE FUN!
>   LARRY
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> 
> 
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