[s-cars] Friday Night Drags at Mission Raceway (long)

[Sean Douglas]

What rpm did you launch at to get a 2.1 60' time? Any tricks of the
trade?

Yes, I think 370 HP at the crank is a little optimistic, I figure more
in the 350 HP range. I've seen dynos with similar setups and they were
in the 290-310 HP ATW range, which assuming a 15% loss back-calculates
to around 350 HP.

Last weekend I had a "run in" with a late model (2000+) Camaro SS
(manual trans) and from a standing start, I pulled 5 car lengths on him
by 4th gear. I think they are spec'd at either 305 or 320HP.

I hope to have it dyno'd later this year, as a local speed shop is
installing a 4 wheel dyno in Sept/Oct.

Sean


> -----Original Message-----
> From: Calvin & Diana Craig [mailto:calvinlc at earthlink.net] 
> Sent: Sunday, June 27, 2004 3:14 PM
> To: Sean Douglas; s-car-list at audifans.com
> Subject: RE: [s-cars] Friday Night Drags at Mission Raceway (long)
> 
> 
> Sean,
> 
> No ,the RT is not used in any calculations.  It seems like 
> what is killing you, as you suspected, is your 60' time.  
> When I ran my totally stock S4 I was able to cut 2.1-2.2 
> second 60' times.  Of course I have been drag racing for quite awhile.
> 
> My best times with a very mild stage 1 chip (22 psi at 5800 
> feet of altitude in July) were 14.9, but only at 93 MPH.  
> Obviously you are making more power than that with the 101 
> MPH.  370 HP...well I don't know about that but certainly 
> over 300.  Good job and thanks for sharing your times!
> 
> --Calvin
> 
> 
> -----Original Message-----
> From: s-car-list-bounces at audifans.com 
> [mailto:s-car-list-bounces at audifans.com]On Behalf Of Sean Douglas
> Sent: Saturday, June 26, 2004 11:07 PM
> To: s-car-list at audifans.com
> Subject: [s-cars] Friday Night Drags at Mission Raceway (long)
> 
> 
> I went out to the street legal drags at Mission Raceway (near 
> Vancouver,
> BC) last night. This was my first time (newbie), so bear with me.
> 
> After tech, I weighed in at 3910 lbs with driver (I weight 
> 150 lbs) and was in the Sport Compact class (a 3900 lb sedan 
> is a compact?). This mostly consisted of Integras, Eagle 
> Talons TSIs, Honda Civics, etc. There was a really trick 1994 
> Toyota Supra, modified to 475 HP ATW (I saw his dyno graph), 
> he had a hard time hooking up and was in the mid-13's. A lot 
> of the cars had turbo kits on it and were stripped down to 
> only the driver seat. There was only one other Audi, a 2001 
> bi-turbo S4, tweaked with a chip and exhaust. I spoke with 
> the S4 driver, who didn't do very well that night as his 
> shift knob broke off in the middle of a run, but he said his 
> best time was 14.2 sec. My car was the only "family car" in 
> the Sport Compact class and I left the baby Recaro seat in 
> for kicks. I received a few funny comments about that!
> 
> Spec on my car: RS2 turbo, RS2 exhaust manifold, RS2 
> injectors, RS2 MAF and 370HP chipset from B. Pastore. I had a 
> 3/4 tank of 94 octane with about 15% toluene, which by my 
> calculations netted 96.5 octane. The weather was overcast and 
> warm, 24 celcius. Boost was hitting 25-26 psi and holding 
> past 6,000 rpm.
> 
> Since I am a newbie, I'm not familiar with the whole 
> Christmas tree thing. From what I can tell, it's a "pro tree" 
> and after the yellow pre-stage and stage bulbs are lit, all 
> three amber lights come on at once, then there is a delay 
> (presumably 0.400 sec) then green. I figured out by the 2nd 
> run to react as soon as the 3 ambers are lit.
> 
> Run #1: R/T 1.475, 60' 2.569, 1/4 14.527, MPH 99.77
> 
> On my first run, I ended up staging too far and turned off 
> the pre-stage bulb. This confused me and I blew the start and 
> by the time I realized the green light was on, over a second 
> had elapsed. I slipped the clutch at about 2,500 rpm.
> 
> Run #2: R/T .584, 60' 2.434, 1/4 15.015, MPH 94.53
> 
> On the second run, I tried dumping the clutch at 4,000 rpm. 
> It didn't work, the whole car shuddered and I think the EDL 
> kicked in and applied the brakes to one of the wheels, it 
> sound like a bang, like the ABS was cycling and for a while I 
> thought I broke something.
> 
> Run #3: R/T .658, 60' 2.530, 1/4 14.523, MPH 101.71
> 
> On the third run, I slipped the clutch again at about 2,500 rpm.
> 
> As you can see, with 370 HP (advertised) my car is not 
> terribly quick, slipping the clutch at 2500 rpm causes the 
> motor to bog down. I figure by slipping the clutch at a 
> higher rpm will probably reduce the 60' time and hence 1/4 
> mile by maybe 0.3 - 0.4 sec which would net me in the low 
> 14's. In the interest of saving the clutch lining, I didn't 
> attempt this. I figure this is how the road test drivers for 
> car magazines do it and assume this is how Car and Driver 
> gets 14.9 sec from a bone stock S6 with 227 HP.
> 
> The one thing that still confuses me is that I don't think 
> the R/T is used in any calculations of ET. On run #1, I had a 
> horrible R/T, but still managed a 14.5 sec ET. From what I 
> understand, the timer does not start until the car leaves the 
> starting line (unblocking the stage beam).
> 
> Any words of wisdom or advice from experienced drag racers 
> would be appreciated.
> 
> Sean Douglas
> 1997 Audi S6
> 
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