Just wanted to hear your experiences at this power level with launching. I have a competition clutch in the stock tranny and I use the "E-brake" when I launch. I have only launched it once on the stock clutch on the stock turbo setup. Just upgraded the clutch. I have a 14' GSR with 450whp (Dynodynamics). Let me know what your thoughts and inputs are on this.

PS I am also getting rear diff billet bushings and polyurethane motor mount insert to minimize "wheel hop" and "wheel spin".

 

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Just wanted to know if my tranny or T-Case would brk on the 1st launch. Lol that's all.

 

I've launched my 8 on stock drive line with a comp stage 2 and an exedy triple tons of times at numerous power levels. 401,449,506,and now 600hp 501tq, no issues. You're fine as long as you know what your doing and not hot lapping, eventually its going to break just like anything that takes lots of abuse.

 

Thanks for the input. But you have an an 8. I'm talking about an Evo x.

 

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There are allot of members at your power level or higher in X's that have successfully launched their cars at drag strips. Allot of their success depends on knowing the track prep and their launch technique for their set up.

If you end up on a track that is prepped well with VHT and you side step your clutch at your torque peak you could shell your transfer case on the first attempt .... or the 50th.

Since you are concerned about breaking things may I consider you launch conservatively
instead of using aggressive launches.

Wheelhop on a well prepped track is a drivetrain killer. Too much clutch slipping at launch can be a clutch killer. You will learn the best by doing it yourself but be prepared if things don't go as expected.

Best of luck

 

True

 

One of the pins shot out my tranny on like my 11 launch ..so I think u will be ok for a little while...but launching on stock tranny is just a matter of time before the diff pins break!!... I'm at 390 whp and 362 wtq.....

 

what were the symptoms?

 

On my 11th launch,the clutch stuck to the floor and the stick wouldn't go into gear. When the car is off you can move the stick into each gear weather the clutch is disengaged or not while the car is off

 

No Symptoms...I launch and did a pull and i smell tranny fluid in the mittle of the wot pull.hahahah...I stop and there was tranny oil all over the bottom of my car ..hahah..one of the pins shot out ....I said f&*( it and drove my car back home (like 10 miles)....i was surprised on normal driving the tranny still function normal hahah....just no oil....it never give me any problems going in gear or nothing like that

The next day I took it down and order the "ULTIMATE EVO X" from jacks ....with all the options the offer at they offered back then (11 months ago)

 

I use the OEM ECU to limit 1st gear boost. I launched only once at like 28psi or so
Now I launch on wastegate (0% WGDC) and then once 2nd hits my other boost curve kicks in. Honestly I should limit 2nd as well, but that would require a lot of work and external hardware to limit 1st for me, and have the ecu limit 2nd switching over to 2nd boost map for 3rd gear. My 60ft times therefore suck. My brother in his 5.OHHHH is actually quicker off the line due to my limiting of power on launch
But I am too chicken after hearing stories of t-case and diffs breaking.

Grudge match continues in the spring.
No EVOs came to represent, and he brought like 5-8 stangs including one with a whipple that ran a 10.9x !!!! Full weight and TWO guys in it..

~Jaraxle

 

I think it's more so how you launch the car rather than the power level. You can damage the drive train even at stock power levels.

 

I am not sure what you mean. Launch is launch is launch.. One foot on the brake and WOT with the launch control holding the RPMs.



~Jaraxle