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Discussion Starter #1
Not Forumwars, LOL.

Several new PB's yesterday. Installed Spec p-trim clutch and JBA highflow cats several weeks ago, first time at the track with the new clutch (1500 miles on it).

PB 60': 1.775
PB 1/8 ET: 8.193
PB 1/8 mph: 85.20
PB 1/4 ET: 12.833 (prev was 12.838 with skinnies up front in -685 ft DA)
PB 1/4 mph: 106.79

Best 1/4:
60':...1.782
330':.5.279
1/8:..8.193 @ 84.63
1/4:..12.833 @ 106.66
DA: 175 ft

It took a few (ok more than a few, I'm a slow learner) runs to figure out how to get the car to launch with the new clutch. I had more than a few launches that had a lot of tire spin, and a few where the engine bogged big time.

Four total runs in 12.8x (12.833, 12.854, 12.869, and 12.888), and 3 in the 12.9x (12.924, 12.967, and 12.986).

Seats removed
Trunk empty
275/50r17 M&H drag radials on 17x9.5 CCW
K&N drop in filter
180 t-stat
JBA high flow cats
Spec p-trim clutch
91 octane tune with 4-5% more fuel added.
 

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Discussion Starter #3
Good show, Stric. You liking the new clutch?
It's a little tricky launching, and now it has some chatter taking off again. It's snowing today, so I'm not driving the car to see if it'll sort out. However, it did get a little better after driving around after getting home.

The 2nd run I bogged it big time. I started off around 4500 rpm and let the clutch out too quick and it yanked the rpm down around 2500 which resulted in an AWESOME 1.98 60'. The first run was 1.99 fish tailing off the line.
 

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Stric....I got my best laucnhes with several 1.8 60's leaving at 4800 and even 5k RPMs depending on track prep. Slipping the clutch is key, just trying to help a brother out. Good times though.
 

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I also found that if the track is sticky either good VHT or a lot of biug tire cars running....drop the RPMS down to 4k and slip the clutch quick and you will shoot out like a rocket. Personally I have found that my car launches best between 4200 and 5k rpm's (5k) when track is really sticky. I am still running a stock clutch and I am looking to replace mine here soon....so I would be appreciative if you could share with me what clutch you went with and why?
 

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Discussion Starter #6
I also found that if the track is sticky either good VHT or a lot of biug tire cars running....drop the RPMS down to 4k and slip the clutch quick and you will shoot out like a rocket. Personally I have found that my car launches best between 4200 and 5k rpm's (5k) when track is really sticky. I am still running a stock clutch and I am looking to replace mine here soon....so I would be appreciative if you could share with me what clutch you went with and why?
I used similar launch technique with the stock clutch, it wasn't too difficult to get it to slip at launch by letting the clutch out at the right speed. This clutch grabs a lot better and finding that right point between sliping clutch and tire grip is a little tougher. But yeah, the clutch has to slip some amount or the run goes to hell.

I went with a non-organic clutch for the following reasons:

1. I get to the track a lot (304 runs in this car now), and the stock clutch was burning each run since adding drag radials last May.
2. I wanted to get the 60' down, and the stock clutch wasn't going to do it, it would slip too much.

I went with the Spec P-trim, for me jury is still out on it for daily driving/track use.
 

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I used similar launch technique with the stock clutch, it wasn't too difficult to get it to slip at launch by letting the clutch out at the right speed. This clutch grabs a lot better and finding that right point between sliping clutch and tire grip is a little tougher. But yeah, the clutch has to slip some amount or the run goes to hell.

I went with a non-organic clutch for the following reasons:

1. I get to the track a lot (304 runs in this car now), and the stock clutch was burning each run since adding drag radials last May.
2. I wanted to get the 60' down, and the stock clutch wasn't going to do it, it would slip too much.

I went with the Spec P-trim, for me jury is still out on it for daily driving/track use.
Why is the jury still out on daily driving? Chatter?
 

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I was running int the ame issue with the stock clutch.....I am having a McClure put in it as we speak.......I looked into the spec's but heard they are noises and too much chatter for daily use....I will et you know how mine does nce I get my car back
 

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Discussion Starter #10
Talked to Spec yesterday. Their first suggestion was to remove the clutch and send them pictures... that can't happen right now. They also said to drive the car more aggresively. I did some of that yesterday, and it does engage much smoother. I'll give it a week or so and see how it's doing.
 

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Discussion Starter #11
I was running int the ame issue with the stock clutch.....I am having a McClure put in it as we speak.......I looked into the spec's but heard they are noises and too much chatter for daily use....I will et you know how mine does nce I get my car back
McClure? Don't know them, perhaps McCleod? Mine is quiet, the only noise seems to be from the throw out bearing which is slowly getting quieter.
 

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Srtricnine. man 1.8 are a nice 60 fter. Id bet from your posted times, you would be up front in a bracket race / day with that consistancy. Good Job.
Those 6 speeds really take some practice. Keep us up on the cluch chatter and results you get.
FT
 

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Talked to Spec yesterday. Their first suggestion was to remove the clutch and send them pictures... that can't happen right now. They also said to drive the car more aggresively. I did some of that yesterday, and it does engage much smoother. I'll give it a week or so and see how it's doing.
I was going to say with any new clutch you have a break-in period and aggressively driving her helps :) BTW nice 60's
 

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Discussion Starter #14
Thanks guys.

The clutch is about the same, some times it's smooth other times I don't get it quite right and it chatters. The chatter is worst with light throttle and too much slip, but I can't always help that with traffic.

Regarding times and bracket racing... yeah I'm not that consistent with the launch, especially with the new clutch. Hoping some more practice will help the consistency. These track runs ranged from 13.12 to 12.83 and 60's were 1.77 to 2.07 (spin, bog, too mutch slip, etc).
 

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Thanks guys.

The clutch is about the same, some times it's smooth other times I don't get it quite right and it chatters. The chatter is worst with light throttle and too much slip, but I can't always help that with traffic.

Regarding times and bracket racing... yeah I'm not that consistent with the launch, especially with the new clutch. Hoping some more practice will help the consistency. These track runs ranged from 13.12 to 12.83 and 60's were 1.77 to 2.07 (spin, bog, too mutch slip, etc).
Dude your my idol right now im trying to keep up with your times! Here is the last few runs i did on the 20in. street tires
 

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^^^^thats with a full interior
 

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Discussion Starter #17
Dude your my idol right now im trying to keep up with your times! Here is the last few runs i did on the 20in. street tires
That's some good mph... better than I've managed to get out of mine. With some good tires, 60' times will drop to low 1.8 and some 1.7's and that will result in close to a 1:1 drop in 1/8 ET (in my experience).
 

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Discussion Starter #19
Hey Stric, how's the P-trim treating you? Bearing quiet down yet?
The bearing is quieter, not quiet as the stock one, but I don't really notice it anymore.

The p-trim... it just wants to be driven more aggressive than stock. That's not always possible due to traffic or weather. I still haven't perfected the track launch just yet, but I also don't have a lot of passes on it.
 
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