[s-cars] More dyno results- 1/4 mile pool

[Joe Pizzimenti]

Or if they just e-mail it to me, I can put it in that database and
keep track of it for when whomever would like to say "I told you so."

I'm thinking it should do a 12.2 at 118, but that's just me.

Joe

On 7/6/05, djdawson2 at aol.com <djdawson2 at aol.com> wrote:
> 
>  
>  Good Joe, 
> Yeah, I don't care about the money... I just want some of the folks who
> believe the CO based (and SAE corrected) dyno figures to be bogus, to ante
> up with their 1/4 mile time guesses. 
>   
> I'd like to put both the 1/4 mile issue, and the SAE correction issue to bed
> sometime this summer.  I think I can hook up with Javad for some sea-level
> uncorrected dyno time, and I know I can get to a near sea-level dragstrip. 
>   
> Come out of the woodwork guys... and let's have your estimates... time and
> mph. 
>   
> Dave 
> -----Original Message-----
> From: Joe Pizzimenti <joe.pizzimenti at gmail.com>
> To: Djdawson2 at aol.com <Djdawson2 at aol.com>
> Cc: s-car-list at audifans.com
> Sent: Wed, 6 Jul 2005 07:53:06 -0400
> Subject: Re: [s-cars] More dyno results
> 
>  
> So who wants in on a betting pool?
> 
> I say we do it Superbowl style, and have a tournament. 
> 
> Use MS Excel:
> http://www.cheapassracing.org/s-car/DawsonPool.xls
> 
> $20.00 buy-in, winner splits it with Dawson 50/50, minus paypal fees.
> 
> Who's in?
> 
> Joe, shouldn't this be in the Marketplace?, Pizzo
> 
> 
> On 7/5/05, Djdawson2 at aol.com <Djdawson2 at aol.com> wrote:
> > For those who aren't sick of seeing my dyno posts ;-)...
> > 
> > This past Saturday, I was able to do a little more time at the dyno. As of
> > my last dyno post, the car was making 418/445 at the wheels, (like it or
> not)
> > SAE corrected.
> > 
> > Since that post, a few things have been done.
> > 
> > First, the turbine housing on the GT30R was changed from a .82 to a .63
> A/R
> > unit. This was aimed at providing a quicker "hit" (which it does), but
> > should result in a lower peak hp.
> > 
> > Second, an additional resonator was added to the exhaust system to
> eliminate
> > the drone... again, should result in a reduced peak number.
> > 
> > Third, I decided to try a very cheap FMIC. I purchased a bar and plate IC
> > on ebay that cost $229. It has a 22" x 8" x 3.5" core, and has cast
> aluminum
> > end tanks with 2.5" inlet and outlet already built in, and in the correct
> > location. I also bought a box of 6 2.5" polished aluminum 90 degree elbows
> that
> > each had one long leg. This was $79.99. Other than that, the "kit"
> > required 2 2.5" silicon 45 degree elbows, a 2 - 2.5" silicon transition,
> and 
> one 4"
> > section of straight 2.5" silicon hose... about $60 for that stuff.
> > 
> > The FMIC was surprisingly easy to put together... took about 6 hours of
> > work. I did the welding myself, but that could have been eliminated by 
> simply
> > using silicon connectors. The whole thing cost under $400, but the labor
> was
> > "free."
> > 
> > Off to the dyno...
> > I did 3 pulls, and all were remarkably similar, indicating that the IC was
> > performing very well. Previously, I would see large losses between pulls 
> with
> > the stock IC.
> > 
> > The numbers were 442/430, and only varied by 1 hp, or 1 ft/lb between
> runs.
> > In fact, the third one was the highest reading.
> > 
> > Other interesting notes... The hp figures no longer looked like peaks. In
> > fact, the curve would cross the 420hp line, and remain there until
> 7500rpm,
> > where I would end the run. The "area under the curve" was a huge
> improvement
> > compared to prior runs. These things all seemed to indicate that el cheapo
> > FMIC was performing great.
> > 
> > Bad news... I lost 15 ft/lbs of torque, even though the curve as a whole
> > looks better. Lastly, don't ask me for a copy of the dyno chart, as I
> don't
> > have any yet. The guys at MAC Autosport lost the files, and all I have are
> the
> > printouts, which I'll try and make available soon to those who may want
> them.
> > 
> > 3 last things to try include a 928 MAF, and RS2 exhaust cam, and a return
> to
> > the .82 A/R turbine housing. The .63 does hit a little earlier, but
> > compressor surge is a problem in higher gears/low rpm.
> > 
> > I'm thinking that I should be able to get this engine into the 470-480
> range
> > when all is said and done. After that, I'll drag it out to sea level for
> > some dyno runs, as well as some real quarter mile runs to provide data
> that
> > some feel is more valid than the SAE corrected data.
> > 
> > That's it for now.
> > Take care,
> > Dave
> > _______________________________________________
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> >
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