few questions about drag radials..

[krazyk]

well ive never used them before, but ive got a set thats been sitting here for hte last year i havent gotten to use.. im gonna be using them this weekend...
What type of tire pressures do you normaly start out with in them before adjusting??
how low can you actualy go as far as tire pressure in drag radials???
Is the burnout box a must for them to heat them up and make them nice and sticky???

Do you launch at higher rpm's with them or launch like if you had street tires that like to spin???

any other info you guys can think of would be great

[Greg86z28]

Don't run too low of pressure or you'll spin the rim off the tire. I'd run anywhere from 18 to 30 psi. I think I'm running 25 now.

When you get to the water box, you'll want to do a burnout to heat up your tires. When you roll up to the line, you'll see "the groove", or the two darker strips where everyone else's tires have been. It's the sticky spot; that's where you want your tires to be.

As for the launch, it's all about your car. With my 305 I could rev it up to 4k rpms and dump the clutch and it would hook and go. With more torque you'll spin the tires. It's not a slick. Hope that helps.

[krazyk]

Don't run too low of pressure or you'll spin the rim off the tire. I'd run anywhere from 18 to 30 psi. I think I'm running 25 now.

When you get to the water box, you'll want to do a burnout to heat up your tires. When you roll up to the line, you'll see "the groove", or the two darker strips where everyone else's tires have been. It's the sticky spot; that's where you want your tires to be.

As for the launch, it's all about your car. With my 305 I could rev it up to 4k rpms and dump the clutch and it would hook and go. With more torque you'll spin the tires. It's not a slick. Hope that helps.
yeah thanks it does help...
the guy from wausau with the mustang told me he runs 13-15psi in his tires...

ill start at 25-26 and see where it sits and adjust from there then..
Hopfuly i can get the hang of the launchs with these and pull off some good times..

[Greg86z28]

Where are you racing?

[krazyk]

Where are you racing?
going down to WIR for the last real street drag night of the season on friday

[Greg86z28]

I'll see you there then.

[krazyk]

I'll see you there then.
shoot me a pm with your phone number.. ill give u a call when i get there.. be nice to meet some more people off here!!

[EVILUTION]

Greg... be sure to post your results!!!

[Greg86z28]

I ran a 12.8 so far.

[BadAss88GT]

Don't run too low of pressure or you'll spin the rim off the tire. I'd run anywhere from 18 to 30 psi. I think I'm running 25 now.

When you get to the water box, you'll want to do a burnout to heat up your tires. When you roll up to the line, you'll see "the groove", or the two darker strips where everyone else's tires have been. It's the sticky spot; that's where you want your tires to be.

As for the launch, it's all about your car. With my 305 I could rev it up to 4k rpms and dump the clutch and it would hook and go. With more torque you'll spin the tires. It's not a slick. Hope that helps.


I run 13-15 pounds in my drag radials with no screws and they dont spin on the rim an inch. I know this for a fact because I marked them and checked each run. I only run 9 1/2-11 on my slicks. 18 is too high for MOST radials and 30 is WAY too high. They need to be aired down just like a slick.


As far as comparing slicks to drag radials, my 60' times were .04 seconds difference, same size tire, compared on the same night. Slicks went a best of 1.57 and radials went 1.61, so there is no difference.

As for launch, Ive been pretty consistantly about half a tenth better on the 60' time by slipping the clutch a little bit than just dumping it.

These numbers are all off a low, low 11 second naturally aspirated car launching from 6000-6200 rpm.

[BadAss88GT]

Greg, what kind of 60' times are you running with the 12.8s?

What radial are you running? Try dropping the pressure down to 15# and give it more RPM on the launch. If it spins, drop it 300 rpm. If it bogs, give it 300 more till you find the sweet spot.

[Greg86z28]

Greg, what kind of 60' times are you running with the 12.8s?

What radial are you running? Try dropping the pressure down to 15# and give it more RPM on the launch. If it spins, drop it 300 rpm. If it bogs, give it 300 more till you find the sweet spot.

I ran a 1.8. I think that's pretty good for a stock suspension camaro. The only thing I've done so far is an adjustable panhard rod, which I haven't even adjusted, and eibach sportline springs, which I can imagine suck for drag racing. I have a Nitto DR (I believe it's the 550). It's a 245.

The first time to the track with the new heads and cam I ran a 13.4 I think. Then I went the following month (last month) and ran a 12.8. I changed to a 700 cfm Holley DP. It's still got the stock jets, so this time I'm going to check the plugs and do some jetting. My jet extensions and float came today too.

[BadAss88GT]

In the Mustang world, guys are running the Nitto DR's anywhere from 10psi to 18psi. Ive only seen one guy say 10, but he swears by it. Most are 15-18, depending on track conditions. I know the main key to getting Nittos to hook is heat. Do a long burnout, give it a good 7-8 count before rolling out. Dont use 1st gear either, use 2nd in the water, the tires wont spin fast enough in 1st gear. Try and hold consistant RPM in your burnout, and try slipping the clutch. I think you'll be suprised, 1.7x short times arent unreasonable for you.

[ZXTUNER]

well how did everyone do?!?!?!? :?:

[BadAss88GT]

Ive heard the track prep was non-existant....AGAIN. For the fast cars anyway, guys were having lots of problems.

[krazyk]

I blew my turbo the night before lol... gay...

[EVILUTION]

Ive heard the track prep was non-existant....AGAIN. For the fast cars anyway, guys were having lots of problems.

What... lousy conditions at the sand box.... I don't fucking believe it. They just seem to take such pride in there pig pen.

[Greg86z28]

I fucking screwed up bad. Forgot to adjust a float, missed a shift. Pisses a guy right off. I also found out shane runs 13.9's because he can't hook up until the 1/8 mile

[BadAss88GT]

I know what Shane runs, lol.

[Greg86z28]

I know what Shane runs, lol.

Well thankfully I didn't race him. I raced the guy with the white camaro, he used to have the 69 firebird. Lost to him. But I saw shane run Kamu and shane took the win.

[EVILUTION]

All this should be taking place at the spot!

[BadAss88GT]

No, these are fast cars. They'll never hook at the spot(s).

[TSi_II]

Standing mile.

[EVILUTION]

No, these are fast cars. They'll never hook at the spot(s).

From the complaining about prep it sounds like without glue on the tarmac they can't even hook at the track.

I would hate that feeling. I bet its alot like running nitrous and having and a nearly empty bottle. You know your car is capable IF everything is perfect but if not it you better not race.

[BadAss88GT]

Even on a gay High School nite at WIR with shit track prep, it hooks 100x better than the road those guys took my on to race that night I came down.

[EVILUTION]

From what I hear there is a crew going down to GLD on the 16th. I plan on going. Not sure what I'll run probably a low 12. I'm more interested in the MPH so I can compare that with the WHP from the dyno.

I have edited my horsepower calculater in my ECU flash software to duplicate the redline dyno numbers. As long as I take all the variables into account I should now have a fairly accurate road dyno.

I'm hoping to dial in a drag racing race gas tune as well.

[Pointdsm]

So you are going? I won't know till tomorrow if i work or not...this week i have a shit ton to do for school though.

[EVILUTION]

If we can get a group to caravan down sure. Otherwise it does't pay for me to take a day off work and drive down to make 3 passes. I'll save my vacation for trips to Hawaii instead.

[BadAss88GT]

What is the point of going to a nice track and only making 3 passes when you could tinker a little trying to get more out of it and try for a goal?

You just want to see what it does, you dont have interest in trying to get more out of it? Seems like a waste to me.

[EVILUTION]

The car doesn't have much more left in it. The fastest full weight stock turbo EVO with bleeding edge tune runs 118mph. The average guy with a quality tune runs 114mph and those are 8s with gearing aimed at 1/4 mile performance.

That's the cool thing about having a nearly stock car. Almost everything has been predefined. I really don't have much I can tinker with. My AFR and boost are locked in. Running boost higher than 25psi won't do anything but kill the thrust bearing and turn the turbo into a mini flame thrower. All I can really play with is the timing as I am out of turbo from 5500 on up.

I race the car in daily driver form. Suspension on full soft, tires at 50psi, and no weight reduction. I'm simply looking for MPH. It doesn't pay to make back to back passes looking for a tenth of a second unless its 12.0 and you want to see 11.9.