JLee81

R/T =.779
60' =2.518
330 =6.097 gap: 3.5sec
1/8 =9.007 @ 84.70mph gap: 2.9sec
1000 =11.494 gap: 2.49sec
1/4 13.326 @110.21mph gap: 1.9 sec

If I get my 60 down to 1.7 with my stock tires(I have done it once and when I got that time I shifted the 2nd gear at 4000rpm to 3rd gear manually. whenever I think about it.. i get so pissed off..), Do you think I could get to...
1.7+3.5+2.9+2.49+1.9 = 12.5? This is just with the pully mod.. Now let's hear it!

Chappy

Gtech or track result?

DerekFSU

At that trap speed you should be in the high 12's IMO. I'm amazed that you can get a 1.7 60' time on street tires. Run some DR's on the back, heat them up and run it in dyno mode, and you should be real close if not there.

JLee81

with g-tech I have put low 12s.and 12.8 and 12.9s as well.. 13.325 is the last run with the evo pully mod. No air filter no header/downpipie, no air intake heat block, no spark plug no ecu. All I need to do now it the ecu. We will see how fast this car can do with NA setting. Hope it brakes mid 12s.

Improviz

Have you run your car at a dragstrip yet?

Also, which GTECH are you using?

Tia...

JLee81

It opens in April. So I have to wait. I use g tech pro rr, the newest one.

Improviz

That's what I thought. GTECHs are generally regarded as being optimistic, fwiw (I took mine to the strip with me, and it told me I was trapping at 115 when my actual trap speed was 107). I don't think you'll hit a 1.7 at a strip on 265-width street tires with that car, or even a 1.8, and frankly a 1.9 is going to be very difficult, that is if it's possible at all.

What strip are you going to take it to? If it's a super-sticky track you might be able to crack into the 1.9x range...but a 1.90 is a pretty honkin' 60' time in a car without LSD, that much torque, and street tires.

Let us know when you go! Videotape it if you can....I'd love to see that.

JLee81

my man.. 1.7 was from the actual dragstrip, not Gtech with my 17 inch tires Pirelli Rosso. 225/245 with stock setting. It is possible.

JLee81

follow all my posts. I have talked about the crazy 1.7 all along in clk 1/4 threads. I did it on the first day I went to the strip in my life. Well. it's not doing that again. The closest I got to was 2.1 ever after. Best run at the strip was 13.325@ 110.21mph with evo pullies on the day the redsox won the world series with 19s.

Improviz

So post a video of you doing it at a track and I'll believe it. 1.7 is AWD territory, and a CLK55 running stock 245's is not gonna do it. The car has no limited-slip diff. It has 390 lb-ft of torque. It has an automatic transmission. It has a stiff suspension not conducive to weight transfer, it has very abrupt throttle tip-in, and finally, it doesn't have a high percentage of its weight over the drive wheels. All of these make it very, very difficult to get off the line as quickly as one would need to in order to hit a 1.7 60' time, and the car doesn't have sufficient traction with 245 series street tires. Even on 245 series drag radials, I doubt the car could pull a 1.7. Something's not right here.

I've had this car for nearly three years now, and I maintain that a 1.7 is flat-out impossible on the 245-series street tires. Prove me wrong.

Improviz

You trapped at 110? What's your weigh-in?

Anyway, 2.1 is more realistic; it was my best 60' time with the stock tires. 1.7 on stock tires is *very* difficult to believe, unless there were some absolutely freakish track conditions that day, the track was surfaced with sandpaper, or (most likely) the equipment malfunctioned.

For example: here is a page with timeslips from heavily modded AWD Audi S4s, with many 12 second 1/4 miles. Few of *those* got below 1.8, and that's with AWD, which allows them to launch by dumping the clutch between 4000 and 5000 rpm!

JLee81

Ok Improviz, my best time is 1.861 and unfortunately I taped my run. I will show you. I also have a slip on May 16 of 2004. I was running on Dodge lane at New England Drag way. I know you can't believe my 60ft. It wasn't 1.7 exactly. It was 1.861 with no tire pressure modification. Once you see the video, you will believe it.

I trapped at 110.21mph and showed my slip to everyone in this forum. My car should weigh more than stock b/c of modifications of larger wheels and tires.

Improviz

I said I wouldn't believe a 1.7 second 60' time. So, given that you missed a 1.7 by nearly 0.2, are you saying my skepticism was unjustified?? You got about a 1.9, which as I said yesterday would be about the absolute best one could hope for in that car, and even that would require freakish track conditions on stock tires.

Which gels with what you said: you never hit it again. I'd still love to see a vid of this.

I'll look forward to seeing it. When will you post it?

Did you weigh the car? Also, how did you launch it to get this 1.861 60' time?

DerekFSU

You seem new to the whole track bit so I'll cut you some slack. A 1.86 is half a world away from a 1.7.

JLee81

I sent the private link to my video to Improviz.
In the video, When I thought I needed to shift the gear to 2nd, computer already made to 2nd gear, so i ended up shifting to 3rd and it was already too late. I shifted down to 2nd but my car already lost its momemtum.
Compare these two slips and tell me if I can get to 12's:

r/t: .683 .799
60: .1.861 2.518
330 5.650 6.097 Here THE MISTAKE took place.
1/8 8.715 9.007 I shifted down to 2nd as soon as possible b/n 330 and 1/8
MPH: 79.04 84.70
1000: 11.448 11.494
1/4 13.786 13.326
MPH: 96.11 110.21

The fist one is absolutely stock setting. The second one is with 19's with PSS9 and evo pully mod. Again the gel was never used.

AMG///Merc

At least that's impressive in my book. I have to think that if you hadn't upshifted to 3rd in your "best run", that could have been a high 12 second quarter, but you know what they say about "Shoulda-woulda-coulda"! While I really couldn't care less about drag racing, being that it's a far less common encounter than a highway roll-on, I wil be happy if I can get my CLK to run in the mid 12's consistently. Mid 12's is damned respectable for a street driven, "GT" imho. What's the eal with the ECU? Also, in regards to your exhaust, did you get the full system, or just the headers with the down pipe? I'm not happy about eliminating the primary cats, but I have to think that eliminating them must do wonders for exhaust flow. I'm thinking/inquiriung into MKB's header/cam/ecu set-up now. We'll see what happens. One factor obviously will be cost, but another will be if there's anything additional to add afterwards (Aside from pullies, which I'm crazy about). Keep us in touch!


Best regards,
Matt

p.s.) Any chance I can see that vid or a pic or two?

Improviz

Because I have no intention of viewing it unless you make it available for all. One person downloading it = one IP, and I'd prefer to keep my IP private.

Further, the link you sent me is not for a video file. It is a .php file.

Lastly, the 1/8 to 1/4 splits on the run on the right look funny.

It shows a pickup of 25.51 mph between the 1/8 and the 1/4, and a time difference of 4.3 seconds. But in your first run, you only picked up 17 mph from the 1/8 to the 1/4 and it took five seconds, even though in both cases the 1000' times were virtually the same.

Here's SGC's timeslip in his E55. He ran a 11.987 @ 117.73 mph. His gain from the 1/8 to the 1/4: 26.26 mph. His time difference from 1/8 to 1/4: 4.23 seconds.

A CLK55 with a pulley change will not stack on speed or close distance like a supercharged E55, especially with a 2.5 60' time. Something doesn't look right here.

Also, in both runs the 1000 ft time is the same, but in the run on the right you ran the same distance 0.46 and 4.2 mph quicker? But by the 1000 ft mark, you would have been well into third gear.

Can you post that 110 mph slip?? I'm trying to figure out what's going on...did something else change between runs? Was there a huge temperature difference??

JLee81

OK Imrpoviz. I do not understand why you are acting this way.

I sent you the link for the video and all you need to do is to put it on your web browser and download the file that shows up. In addition, my webdrive company won't let me track your ip unless you hack or something. Do you think that the company will risk itself for releasing a personal information?

This webdrive is for my personal use and it took me sometime to upload the file so that you can see it as YOU REQUESTED. You totally wasted my time man. At least be polite. I am not interested in your ip address and I don't have any intension to track down where you are,

I started this thread to hear some advises for better 1/4 time before the tack opens in April. If you are going to disrupt the main point of this thread and start suspecting me, I would like to ask you to stop questioning about my record. They are just what they are.

I have posted my slip before and a lot of people in this clk55 forum saw it. I will not waste my time again to show you my slip.. Once is enough.

Pully kit gave me 10 rwp and 10tq on the dyno (315rwhp 332rwtq). And this also had been posted in this forum as well. When I did 110.21mph, my car had 19 inch wheels and PSS9 with evo pully. The temperture difference was about 15 degress lower than the first one. No wind that day.

///AMG MERC-PM me your email address. I will also send the video to you directly. Ecu will be done by Speedtuniong USA very soon. It's not worth to do it now when the road is so icy in Boston. I will update you with info on my headers soon. Just wait a little more.

JLee81

As I said before, I made a mistake in the first run I posted. I was supposed to be in the 2nd gear, I touched the shift button to 3rd gear and had to shift down. I lost momentum at that point. Tha't s why 1000ft time is almost equal. I the first run was done correctly, it would have lower time. after 330 ft significantly.

Improviz

Because I don't think a CLK55 can do a 1/8-1/4 split as fast as an E55, for starters...

So why not post the video where everyone can see it? Is there some reason for this? I'm more curious than anything else. I can get it via an IP masking service at any rate, but it still doesn't explain your reluctance to allow the forum at large to view it.

Also, the link you sent me is NOT to a .wmv file. It is to a script file. Please provide a link to a .wmv file.

I don't see how a CLK55 with pulleys can pull the same 1/8-1/4 time and mph as an E55. Sorry, but that's the way I see it. I own this car, and an E55 would pull it, hard, in the final 1/8.

And as I pointed out before, and showed with simple math, the numbers simply look funny. I'm not saying you're lying, I'm saying the numbers look funny, which is why I wanted to see it.

Why? What exactly is it you don't want people to see? Similarly, why didn't you post the slip at dragtimes.com, where you posted the time?

This is odd...you don't want people to see the video, you don't want people to see the slip...what's the big deal?

And 10 rwhp shouldn't gain you 8 mph over the entire 1/4, let alone in the final 1/8. It should gain you a tenth or so, and one mph if that.

Which is why I'm puzzled at the large difference between your runs. Again, this is in the time period *after* the car is in third.