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Discussion Starter · #1 ·
At last I could sit at the PC to write about what happened at the track.

1st pass
I made the HUGE mistake of heating the BFG's, after I staged, I put the
engine to around 3,500 RPM's and when the lights came I dropped the
clutch, guess what happened.... the car didn't move! after that, cause
the mixture was very rich I had problems taking off and finally I made
a 16 second pass, awful!

2nd and 3rd pass:
didn't heat the tires, cause I didn't want to risk the drivetrain, just
the power of the car. did 2.13's in the 60 ft, way rich mixture.
with the following results
reaction: 0.767
60 ft: 2.134s
330 ft: 5.842s
1/8: 9.02 @ 77.71 mph
1/4: 14.04 @ 97.19 mph

not thaaaat bad but I made that same #'s without the T4 compressor, MSD
6AL, no additional injectors, no tuning tools (pyrometer)

4th pass (at least I touched the 13's)
having identified problems with the uncovered flowmeter :-( and unstable
boost level
I got the following results:
reaction (don't read) 0.902
60 ft: 2.167s
330 ft: 5.856s
1/8: 8.96 @ (unreadable by grease spot) mph
1/4: 13.856 @ 99.95 mph

Yesterday, I installed other AFM and felt a lot faster and smoother, I
cant wait for the next wednesday.

BTW at the drag strip was a pair of JET FUNNY CARS, WHOA!!!!
that is just spectacular, when they were heating the engines, the
airflow generated was unbelievable!, even trees 150ft+ away were moving
A LOT because of it, and when they finally staged the lights went on and
[email protected] later, the race was finished.

CarlosZXT
 

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1/4 mile et Question.

> At last I could sit at the PC to write about
> what happened at the track.

> 1st pass
> I made the HUGE mistake of heating the
> BFG's, after I staged, I put the
> engine to around 3,500 RPM's and when the
> lights came I dropped the
> clutch, guess what happened.... the car
> didn't move! after that, cause
> the mixture was very rich I had problems
> taking off and finally I made
> a 16 second pass, awful!

> 2nd and 3rd pass:
> didn't heat the tires, cause I didn't want
> to risk the drivetrain, just
> the power of the car. did 2.13's in the 60
> ft, way rich mixture.
> with the following results
> reaction: 0.767
> 60 ft: 2.134s
> 330 ft: 5.842s
> 1/8: 9.02 @ 77.71 mph
> 1/4: 14.04 @ 97.19 mph

> not thaaaat bad but I made that same #'s
> without the T4 compressor, MSD
> 6AL, no additional injectors, no tuning
> tools (pyrometer)

> 4th pass (at least I touched the 13's)
> having identified problems with the
> uncovered flowmeter :-( and unstable
> boost level
> I got the following results:
> reaction (don't read) 0.902
> 60 ft: 2.167s
> 330 ft: 5.856s
> 1/8: 8.96 @ (unreadable by grease spot) mph
> 1/4: 13.856 @ 99.95 mph

> This may sound like a stupid question but what does it mean when your car ran [email protected] when my friends heavily modified n/a 240Z ran a [email protected] What accounts for the slower et but a higher mph? anyone?

ZR8ED
 

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Re: 1/4 mile et Question.

Well, I am not a drag racer person, but I can try to explain this from physics. What it means is that the first part of the run of your friends was slower, probably a slower 60 ft time. This could be due to too much slippage, wheels spin, not as much torque, slower reaction time... That could be why the time is slower. Once hooked up though, or in higher r's he seems to have accelerated faster than the other guy with a slower time. The other guy could have run out of steam or not have had the last bit at the end to keep accelerating, or started deccelerating(just accelerating at a slower rate is what I mean). I always thought too that if the length is the same, ie 1/4 mile, that the guy with the faster time had to have the faster speed, but after thinking about it realized...well, what I just wrote. Think about it.
Hope this helps,
Joshua L.
 
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