87 turbo 2 13b-re cosmo s475 putting down 475hp just put some gently used m/t et street slicks on Im goin to the track here soon to get a feel for my new baby and was wondering what kinda air pressure should I be running on these 26x10.5 r16 to get maximum grippage and
Since I'm new to the drag scene any tips on launching this bad boy for max grip n go? Anyone with experience chime in on the subject please thanks

 

Are they full slicks or a radial slick?

Full slicks I run around 7-8 pounds and go UP from there to help with stability at the top end. Go DOWN if your spinning off the line. If it feels like your going over railroad tracks till about the 60 foot mark it's okay, it's the tire wrinkling up like its supposed too.

Never ran on a radial slick, but I would start at normal tire pressure and go DOWN.

RPM to launch, I would start low, maybe 3500, and see what that does for you.

 

3500?? Wouldn't i bog takin off that low?

 

Those look like radials to me.

3500 is a good starting point. Go up from there. You don't just want to drop the clutch @ 5000 and snap a half shaft

 

3500?? Wouldn't i bog takin off that low?

It really depends on how responsive your turbo is.

I am 100% no drag racer, but I ran ET Street radials in the size you mentioned on my TII.

My experience is- Don't be afraid to work your way down in tire pressures if you are not hooking up, our cars are ~1,000lbs lighter than the Camaros/Mustangs MT is writing their pressure recommendations for.

I only used them a couple events and I never worked my way down to where they would hold 1st gear- so you will probably have to get into the high single digits PSI.

Start at the recommended pressure and work down, it takes a while to figure out how to drive on tires that let the car slosh like a boat at sea on the top end of the strip.

If you feel you aren't getting them tacky enough with 1st gear burnouts, I had more luck with 2nd gear burnouts. Make em listen to your loud *** rotary a while as you warm them- don't be shy.

Also, ignore my advice if some real drag racers come in and answer your questions with contradictory recommendations.

 

Yea ima try 2nd gear butouts just got done installing line lock kits on the front so Ima make sure to roast these ***** b4 I launch

 

i started at 14 psi and would spin em launching at 6500 so try to soft launch at 4000 and let the turbo do the work

 

And let the clutch out S-L-O-W to get that weight transfer started before trying to put all the power to the tires- so hard to do.

Or get one of those nifty clutch damper thingies drag racers use.

 

I have a 6 puck no spring hub clutch it's like engaged or not kinda no in between... So do I still ease off the clutch or dump?

 

I had a 6 puck sprung.

Its relative. Its not like cook your pressure plate letting it slip like 2nd gear launches are (now that is a fast 0-60mph), its more like don't just drop the clutch and shock the tires into spinning.

When I am on the line and hyped it really feels like I h-a-v-e t-o l-e-t t-h-e c-l-u-t-c-h o-u-t s-l-o-w. In reality it is how you take off from a stop light/sign every single stop on the street.

 

Ok kool I get ya I'll deff try that out

 

8 psi is optimal for slicks, allows for the side wall of the tire to flex and take some toque, but the lower the PSI the more time it takes to go down the track, the higher PSI the more wheel spin/ wheel hop. Gotta find the happy medium