I haven't launched my car since i got my dynoflash mailin until last night. i reved it up to around 5-5500 where i usually launch from and did what i always do. but this time the car didn't rocket off. it just revved up, so i popped it into second and just sat there...i let off the gas 1/2 way then it hooked up and took off? did i hit the max power the stock clutch can handle? or did i do something wrong and not realize it? of course it stunk like clutch so i went home and parked it til the next morning and drove around and tested the car a little bit. then i got on the gas to check all the gears for slipping, thinking i may have caused permenent damage. luckily there was no slipping and hopfully it won't start doing it?


any ideas y it didn't grab? there are people pushing a lot more power on the stocker than i am...

 

No, there aren't people pushing a lot more power than you are on the stocker. You are probably around 350whp/350wtq, and if you're launching with any sort of slip, you can easily overpower the stock clutch, especially if you have the restrictor valve still in the slave cylinder.

Basically, you either gave too little clutch for the amount of gas you were applying, then it burned through the clutch, or you have already worn it down to the point it can't handle those launches anymore. It's not a surprise considering your power level and the fact you've drag raced it.

Time for an Exedy Twin like your buddy Most-Wanted. You could make it two Dynoflash 11-sec IXs with basic mods.

Oh, to fully test your clutch, go out and put the car in 5th at 2500rpm, then floor it. When the boost spikes, if the rpms jump, your clutch is slipping. You need to do it in 5th, not 1st-3rd.

 

Time for a new clutch. I've melted enough of them to know.

 

i did the 2500+ in 5th and no slipping...

 

if it doesn't do it now...im most likely okay? or could it start slipping in a week or so?

 

It could start slipping at any point in time, but if it passed the slip test, then your clutch is fine for now. YOu just messed up that one launch. It's not a big deal, but I figured you'd know if you just messed up once. You made it sound like you had no clue what happened. You just burned the clutch and shortened it's life, but you haven't killed it yet.

 

well this.....

No, there aren't people pushing a lot more power than you are on the stocker. You are probably around 350whp/350wtq, and if you're launching with any sort of slip, you can easily overpower the stock clutch, especially if you have the restrictor valve still in the slave cylinder.

answered my question....im at the limit now...and need to put launching and super abusive driving on hold until i get a new clutch... well c...

thanks for ur help

 

My Exedy twins been slipping. Right around 3500rpms in 2nd, 3rd, 4th, etc. Not so much at 2500 rpms in 5th gear. Looking at getting new discs. I'm so pleased

 

+1

 

Well, yes, that's because we hit peak boost and peak torque at 3500 (or so). You wouldn't have a problem at 2500, because there's no boost. I only said to START at 2500 and floor it. AS the rpms rise and boost builds, then the clutch will slip at peak torque.

 

I just put in the SS clutch line and took out the restrictor, now my clutch slips more with the same launch. I also did cams, think maybe its because of more power?

Im going to try that 5th gear thing too, see if my clutch if F'oed.

 

Join the club pal, you need an ACT :-)

I went to the track the other day and realized with 45k on my stocker and the power I have, launches dont happen. First time I launched as soon as I hit 2nd it slipped so bad I had to put it in 4th and just coast down. My best 60' was a 2.05 with no launch. Ill be getting an ACT shortly to correct that.

 

You're expierence isn't to out of the ordinary.

The reason it hed on a higher gear and not at a launch is because of the heat generated - period.

I remember when I was trying a prototype organic clutch on my GT3076 Evo - It would hold the power on the dyno (even peak HP / Torque) but under a hard 1st gear launch - it would slip.

The abuse from a 5-5500 RPM launch is frankly too much.

If you need a clutch - feel free to shoot me a PM - or if you're undecided on what route to go - Give me a call and I can give you the pros and cons of each.

 

Would a simple mail in reflash yield those kind off numbers?

 

Doogie, on a IX, it would not be typical, but it's possible depending on the mod combination. I only expect/claim 330/330 on my package that includes a mail-in flash. In this guy's case, he was trapping 113 before his flash, so I'm guessing he's close to 350/350 (113 trap = 330whp minimum).