i would have posted this in the performance section but lack of traffic flow,lately.
to all thats making around 450 rwhp. Hoe are you guys launching?? What rpms are you luanching at on slicks??? When the tree drops, and your comming out of the hole, are you turning the boost up after the 60 ft or what?? I was just curius of how strong the drivetrain is thats all.

 

Too many variables...

Power band, engines mods, turbo specs, tires/slicks size/type are just some of the few...


-Ted

 

considering you make full boost by 5500 rpms, and everything to help hook up. So what happens if you luanch under powerband, will you stall,bogg, ect..

 

In response to your drivetrain question, I wouldn't recommend using slicks with the stock rear end or axles if you are making 450 rwhp. Blowing the diff is an expensive proposition, especially is the housing gets damaged in the process. It seems you can't get the housings anymore from the dealer (I don't know this for a fact) so you may be stuck finding one in a scrapyard (good luck).

 

no my diff will be a kaaz 1.5, and also 300m axcels. My new car is going to have t-78 so I dont want to look stupid at the track. Should U luanch arounf 5500 rpms wait till after 60ft and hit the boost?? I need as much POSITIVE advice as possible. Tell me if this sounds about right. 5500 rpms@13 psi dump the clutch after 60ft then high boost?? I have had experience with high hp fd's just not at the track.

 

Start off at 7000rpm.

Rev and dump.

Does the car bog?

If yes, raise RPM to 7500rpm. If no, launch at 7000rpm.

Rev and dump @ 7500rpm

Does the car bog?

Keep going till you find where the best spot is.

 

what about the boost?? Keep it at the same boost pressure as I would going accross the finish line?? IS 7000 rpms a 50/50 cjance of braking rear end(kaaz 1.5, 300m axcels)?? btw Have you ever kicked the car side ways after 60ft. I dont want to slid into the wall. I really hope the kaaz 1.5 will keep me in a striaght line. fill me in bros. I so glad that you guys are responding, thank you.

 

I want to be a HARDCORE dragracer!! hehehe

 

What about boost?

If you are worried your **** end is going to fail, get a stronger one if you want to go drag racing!

My car launches both wheels up and a little to the right, so the car is sideways from the get go. If you are worried about controlling your car sideways, you shouldn't be on the track if you can't drive out of it or know when to back off and save your car and yourself.

 

If you've never driven on a ET Street or a full slick I would not even try to launch hard on your first pass. I'd get a feel for the car at higher speeds first with a bais-ply tire. You want to launch as hard as you can without breaking anything or "shocking the tires" too hard. Every car is going to be a little different. Weight, power, suspension, tires, clutch, flywheel,and your alignment are just a few factors that have to taken into consideration. Hope this helps.

 

In a thread in the 3rd gen section, Nocab72 and I went to the track for the first time (with the Rx-7s) with Et Streets in both our wheel wells. Thread here.

Nocab runs a Gt35/40 that I would guess to be in the low 400's RWHP. I run stock twins at around 377 RWHP. One day at the track and a dozen runs does not make me an expert. I did try dumping at different RPM's and agree that you're going to have to find your sweet spot. I was getting close at near 6000 RRPM dump with the Et Streets, and modulating the gas pedal for traction.

Man, I forgot how fun drag racing on the track was!

T

 

Im going to start out luanching at 13 psi @5500 rpms until I get the hang of it.

 

Amen! The bias ply tires are DIFFERENT! Great advice. Get used to what 60-80 mph feels like before you freak out at 100mph 'cause you think the car got "loose!"

 

Speaking from experience there "I had to get out of it 3 times on that first pass because the backend felt like it was all over the place" Badog? Oh wait, maybe that was because the ET Streets weren't properly seated on the rims...dolpt! Guess pumping them up to 50psi and a small burnout fixed that problem didn't it... Only scared a few pedestrians in the process...hahaha

K

 

nocab , do you have stock rearend?? you guys are starting to scare me with this ****!! Woudnt the kaaz 1.5 way help with controlling the rear end alot???

 

People are using the Kazz mostly because it's stronger. The stock diff. won't take much wheel hop before breaking. Your car should launch pretty straight if everything is setup correctly. If you car is going for the wall every time you launch, switching from the stock diff. to a Kazz isn't going to change anything. Assuming your stock torsen is working correctly.

 

 

forcefed7, are you using the kaaz 1.5 way??if the kaaz doesnt, then what does??? Why do people use it for road racing ect..?? Does anybody know of a positive traction unit or anything for a 3rd gen ?? I want something that will help me go in striaght.

 

Are you worried about you car breaking loose after the 60ft mark on slicks? At the power levels you are talking about you shouldn't have a problem with traction. Very unlikely you are going to break the tires loose in second gear. Just take it easy on your first pass, and get a feel for the car.

 

new car has t-78. Yes i am worries about breaking tires loose in 2nd. I dont wont to go side ways at all. Do slicks hook that good??

 

At 13psi on slicks and a T78 you'll never break loose.

 

Ill never break loose as in I wont have a good luanch or Im safe from going sideways?? 13 psi for the first two runs and then Im bumping it up to 15psi. I know 15psi what a ******* ***** . Wait till I learn to drive that badboy, 25psi and dumping the clutch after a few months . It will be while before I will run that kinda boost. i want to do things right the first time. Im still learning about ignition and spark plugs and also race gas(thanks to ErnieT)

 

Im not saying that its impossible to break loose, but its very doubtful. And you can get sideways at anytime, at any boost. Thats just a risk in drag racing. I would run 15psi the first time. Launch at 7000, drop it, and let off at the 1/8 mile. If you feel confident, keep on it the next time. If it ever does get loose, just make sure you keep on the gas and countersteer your *** off. I doubt you'll ever have to worry about that though.

 

after the 1/8 , breaking loose is that beacuase of the slicks??? or its just when the turbo really starts to out out??

 

I think he's telling you to get out of the gas @ the 1/8 mile so that you get used to the feeling of the non-radial tires at high speeds...

kyle