AWD Turbo Parts and Performance

Marc S – Pomona in June – Awful new clutch, but 12.16 / 114mph

The good:

– The Pomona guys said it was the smallest turnout all year. We averaged
a run per hour for the first few hours, and then around 2:40pm it started
to become “run as often as you want”… You just ran & got back in line
again (with between 16 – 40 other cars!) So we ended up paying under a
dollar per run if ya don’t count the race gas :)

– Scott Terrace ran some awesome times, especially with his very short
list of mods… 13.3’s! This is right up there with those ol’ East Coast
stories of putting under $1000 into a DSM & being at low 13’s… Scott is
going for 12’s soon on the ultimate budget car!

– Bryan actually showed this time (hehe) and broke 13’s on his 14B car!
Yeeha!

– Had a first-timer come (I just know I’m gonna spell this wrong…
“Shino?”) and do awesome! Shino has a 2G FWD with limited mods and by his
3rd launch he had pulled a 2.3 60-foot time! He later pulled at least 2
2.2 60-foot times! (1/4 mi time was 14.6 I believe). Fantastic times for
a FWD & a first time at the track. Congrats!

– I had a new personal best & my MPH increased substantially.

The bad:

– Most of my times! Yeah, I know these times are faster than most, but
honestly the car has more in it so considering I started the day at a 12.19
@ 114.3 w/ a 1.857 60 foot time, the day was very disappointing for me.

The ugly:

– My 60-foot times were horrid. I could not launch the car worth a damn
with the new clutch. I wanted to rip that thing out and torch it. Even
with *11* runs (towards the end I was trying ANYTHING to see if I could
figure out a method to launch) I couldn’t do jack on my launches… Here are
some of the timeslips, then I’ll mention the “why”…

12.16 @ 114.5, 1.807 60-foot time
12.19 @ 114.3, 1.857 60-foot time
12.19 @ 114, 1.763 60-foot time (hit rev limiter bad on 1-2 shift)
12.32 @ 113.5, 1.897 60-foot time
12.32 @ 113.2, 1.922 60-foot time
12.34 @ 114, 1.895 60-foot time
12.40 @ 114.4, 1.972 60-foot time
Other 60 foot times included: 2.071, 1.971, 2.036, 2.254.

The day started off exciting… We knew on the first run that the engine was
11-second capable. Had the MPH, just needed a good launch… If I coulda
had a 1.71 60 foot time on that 12.19/1.857 run, the 12.32/1.922 run,
etc… Coulda grabbed an 11.9x. We all knew it and as the day went on I
was really really frustrated at not being able to improve the launch.

Here’s what was happening in-car:
I’d take the engine to various rpm, usually no less than 4500, and then
when it was time to launch I’d start stepping on the gas and then start
releasing the clutch. No matter how fast or slow I seemed to release the
clutch pedal, within the first few feet of launching, suddenly I’d hear
loud bangin’ noises coming from all 4 tires. The car ran *perfectly*
straight off the line and down the track, was not squirmy in any way. So
what did I figure? I thought I had wheel hop… That the tires were right
on the border of hooking up/not hooking up and were going back and forth
between the two, hence the physical banging I was feeling/hearing. (Every
launch now activated my windshield washers, too, so it seemed like I was
getting decent traction).

So stupid me, I spent almost all my runs trying to get the wheels spinning
a little more… I raised the RPM level of my launches, tried slipping the
clutch even more (it doesn’t like to slip at all), etc. I didn’t want to
be on the edge of traction… I wanted to have my wheels spinning more
cleanly for a little off the line, and then have them hook up solid… This
is how I got my low 1.7’s before, because the car still accelerates strong
with the spinning, and you don’t bog your engine. Most of the runs
Saturday I’d hit the rev limiter on the 1-2 shift too… Suddenly it would
jump to 7200 on my tach (my tach reads 300 rpm low) and there would be no
time to shift to 2nd before the limiter hit…

Realization of what was happening didn’t come until the 9th friggin run…
(I was kinda out of it the whole day from getting 3 hours max of sleep). I
can’t remember exactly how it happened but I mentioned to someone how I hit
my rev limiter at the 1-2 shift at my last run, and they responded “yeah,
you were in that rev limiter for a while”… (And I was thinking “that’s
odd, when rev limiter hits before I can shift, it’s usually pretty quick).
The spectator describes how my engine sounds *off the line* before I even
got to shift… Brah-brah-brah-brah (stutter stutter stutter). Ronnie comes
by & he confirms the prob… I was riding the rev-limiter throughout the
launch! It was impossible to hear the rev-limiter with helmet on, windows
closed, and big loud sounds coming from all 4 tires… Yeah, you could call
it wheel hop, but not because I was on the verge of traction… It was
because the engine was making so much power it was just annihilating all 4
tires and instantly going to rev limiter the whole way through 1st… As the
rev limiter hit, the wheels would go back & forth between gaining a touch
of traction & losing it again. The wheels were all spinning so evenly that
the car never felt squirmy in any way and simply stayed straight…

So yeah, I was running low 12’s with riding the rev limiter throughout
first gear. Engine made lots of power, clutch grabbed hard, tires couldn’t
hack it in any way. Plain & simple. Nice to know the why, but there
wasn’t anything I could do to go faster… Just couldn’t get any traction
with such a harsh clutch. The clutch did its job of holding the power. It
just did it too well! End of story.

I am gonna see about getting my rev limiter raised to 8000, perhaps that
will help a little… Now I know how a FWD’er with a built engine and no
slicks feels. I honestly think though that if I had my “old” clutch in the
car (before it blew a spring), 11’s coulda been mine :). Time to invest in
some tires.

Which leads us to today (Sunday)-

Billy- Kick some butt and bring us that 11-sec time slip we’ve been waiting
for… Our cars are definitely good for it. As long as you didn’t get my
type of clutch installed last night you will do just fine :)-. Good luck
to Josh too!

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