After unsuccessfully searching for 2 hours and reading countless street racing threads,I am going to put the flame suit on and just ask directions. Where should I be looking for track type,AWD launch techniques for a EVO8 on slicks at the 400+ WHP level ? Or more specifiaclly,perhaps,what NOT to do so that I might get to drive it home afterwards. Also,maybe a few links to what specific parts I might consider for upgrade in the drivetrain as the car is currently apart getting forged bottom end/head/cams/clutch work. I am hoping for low 1.6/high 1.5 60s,realistic for street driven or not ? I am coming from a high HP twin turbo IRS rear wheel drive application so the parts breakage is not a new thing.Thanks in advance,I expect to enjoy this new to me EVO this summer !

 

just don't drop the clutch. slowly let out the clutch until the engagement point, keep it there, rev it up to 5500 and see if it launches or bogs. You will probably have to test it higher and higher until it doesn't bog anymore.

using a two step helps. it builds boost.

also switching out the clutch line to a stainless one helps eliminate the vagueness of figuring out where the engagement point is. helped me a ton on my car. I couldn't get a good launch before the stainless line.

 

In my case, I ran a few 12.7's at 109mph(I suck) with 1.8 60's, on street tires. I have a TRE stage 3 tcase, evedy stage 2 clutch and stock transmission. On my last run of the day, I got back wheel hop and broke something in my transmission, so it can be done even at lower power levels like mine. The most important thing is to slip the clutch.

Stock transfercases can last, and have been proven many times, but it only takes once to break one. Stock transmissions are ususally pretty stout, but as you can see from my experience, things can happen. If you want a bullet proof drive train go with a built trans and Tcase.

 

So based on my reading and what you are saying,T-case first,then trans are weak points. No problems usually with halfshafts ? Clutch,if its a good quality twin disc,slip a little(dont burn it) and that should get me started.I realize there is no do this and the car will run the number,and I can appreciate just how hard it must be to get the right combination of launch rpm/boost/slip to get the car down the track and not break it ! Looks like some test and tune time should give me a better idea of how to get this to work.Thanks for the info,I appreciate it !

 

A lot of it is in the technique. I had 400+ launches on my car (drag and AX events). Aside from an aftermarket clutch, all else was OE. Car made 340/330 DLL hp/tq, ran r-comps and street tires.

Do not drop the clutch. Take the slack out of the line, preloading the drivetrain. Walk it back - and your off (in not so many steps). Having the right 2step setting is key too. Adjusting for the event, etc.