John,
I believe that the compression ratios that you speak of were in the
restrictor plate motors. I don't think a good breathing motor would live
with 19:1, or even 16:1 on Gasoline, but alky loves compression. As for
power on Alky over gasoline, I doubt that you will see even 10% gain, in
the same motor, when compared to racing gasoline. I did find on the dyno
though that alky delivers more torque at a lower RPM. My experience with
alcohol may not be realistic, however, because I never did find the
optimum timing to run. I am convinced that I was quite a bit short on
the curve. I am going to make a concentrated effort to find the right
setup on straight alky though. I know people that were running blown
alky motors with more advance than I ran.
Tom, Redding CA - #216 D/GCC
John Beckett wrote:
>
> Didn't Winston cup cars run compression ratios upwards of 19 to 1 awhile
> back? Ran on spec gas too, I believe 110 octane.
>
> My understanding is Alcohol is worth about 10% on HP. Jeez, if I had run the
> N2O setting that Dave recommended it would have been worth 50% more HP.
>
> John Beckett
>
> ----- Original Message -----
> From: "Rick Byrnes" <rick@rbmotorsports.com>
> To: "Keith Turk" <kturk@ala.net>; <land-speed@autox.team.net>
> Sent: Friday, October 20, 2000 9:15 AM
> Subject: Re: List Imput
>
> > Since Keith wants some questions from lurkers, I have one about fuel.
> >
> > My current engine (Pinto) has been built at 17.5:1 CR to run gasoline (ERC
> > A8C) at Bville. With that CR, I have great fear of running at sea level
> in
> > Michigan or Maxton with any gasoline, but plan on switching to methanol
> for
> > 2001 season.
> > The question is, what power changes can I expect? (I know....more) and
> how
> > should my thoughts change relative to timing advance and what starting
> > problems might occur.
> > My current EFI system is equiped with 4 80 PPH injectors and I will
> replace
> > with 4 160 pph injectors designed for methanol. Fuel delivery system is
> all
> > designed for any fuel. (all stainless or anodized). Fuel supply is
> > sufficient at 3 bar pressure thru -12 hose and fittings. (I was making
> > somewhere between 600 and 700 HP [measured 600 at wheels] with the turbo
> > motor and of course will use the same fuel delivery system.)
> > So the question is POWER...
> > Now, Keith, no words about laughing gas, I'm talkin about real fuel...
> >
> > The second part of this question, what reduction in compression is
> necessary
> > to use NitroMethane in this proposed fuel. I know the learning curve is
> > quite steep and do not plan on doing this for 2001, but my daddy was
> mixing
> > methanol and nitro back in the 30's with midgets (cars, not people) and I
> > sure wouldnt mind following in his footsteps...he is still my hero.
> >
> > Gentlemen (and ladies) the floor is open :=D
> >
> > Rick Byrnes
> > We have enough youth...........How about a fountain of smart
> > www.rbmotorsports.com
> >
> > ----- Original Message -----
> > From: "Keith Turk" <kturk@ala.net>
> > To: <land-speed@autox.team.net>
> > Sent: Friday, October 20, 2000 5:04 AM
> > Subject: List Imput
> >
> >
> > > We came up with a fancy term for folks that hang out in the back round
> and
> > > don't ask questions ... ( formerly lurkers)... but the answer remains
> that
> > > we need questions... even questions of Dubious Quality...
> >
> >
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