There are too many variables there that can go on, so it's hard telling how much the et will improve using a full slick. You would have to relearn how to launch the car and trust the tires. At 1st it's a bit tuff to do since your driving habits using street tires is to feather it out a bit, wheres as slicks you won't have much give and in end result bog the motor down a bit.
But I have seen people gain as much as .5 tenths using a full slick, it really depends on the setup/driver/traction loss and gain going from street tires to slicks.

Generally this would be a quick run down using 60ft and a given ET, this is just an example though.

Street tires 1.6 60ft 9.40 @159mph
slicks 1.3 60ft 9.10 @159mph

I've seen as much as a .2 tenth of a gain by improving the 60ft. buy just .1 tenth. But in all honestly the most important part on the track is not so much the 60ft, but rather the 330ft. mark.
80% of your ET is gathered up in the 1st half of the track, so the 60ft is important but I tend to think the 330ft. is more important to me as thats where everything really gets going. And it's on the most important shift, the 1-2shift.
Once you make it past the 1/8th mile it's smooth sailing from there.
I've actually had a pass one time where I got completely locked out of 4th gear, I shift to 4th right before the 1000ft. mark. I never did get into 4th gear and just tossed it into neutral and coasted through the traps at a 9.44 @125mph. Most of the day I was running 9.20's-9.30's. So that should give you a good idea where all of the ET is gathered for the most part. Also that pass that I got locked out of 4th gear was in Vegas where as the track was prepped very very well, it was also against Paul's evo There's video of it on youtube.

 

lets all race in my backyard **** it

 

I think you've said it well, here, Al. The important thing is that people are enjoying their quest to push their own boundaries, although some are doing so in different ways. If it's not fun and rewarding on the journey, as well as reaching the goal, what's the point? With a few exceptions, it's costing most of us in both time and money to keep doing this hobby. When it gets to feel like work, you better get paid for it, or you won't do it anymore.

 

Anything you can do to reduce your 60ft times will be multiplied by 1.4 to 1.6 in 1/4. If you car is still spinning past the 60ft mark on street tires, your times will improve even more.

About 5 years ago when I built my first KA-T 240sx, I ran 12.8s on radials and 11.40s on a slick. Getting the power to the ground is the key to drag racing.

I agree with you. A lot of people would run a lot quicker if they actually set their car up for drag racing. If you are going to drag race, run drag race slicks. You wouldn't go ice racing on all season tires or try to compete in road racing on all season tires.

To be honest, I am kind of tired of hearing people justify their slower times by stating they were on "radials" or their car is "full weight" or other peoples cars are "gutted tin cans" If people dont want to make those compromises with their car, thats fine, but they shouldn't feel the need to make excuses for their times. Either play ball or accept being slower.

I race my car in an import series. I run Frantic 7 which is the top class. I am the only car in my class that has stock suspension, OEM glass windows, full interior, etc. I am pretty sure I am the only car that still runs gas and not alchy. I am competitive and led the points race through race 5 last season. They changed the format and quit awarding points and made it a large cash payout instead. I dont cry or complain that others are much lighter or back halved or have 30" slicks... I turn the boost up and let it rip and do very well. When I want my car to be quicker, I will gut it out, put lexan in it, back half the car and put a G-force trans in it.

 

Something to think about next time you try and compare your numbers to the ET calculators. Imports (in general) really don't have the type of powerband and gearing that those calculators are based on.

The setups that run what the calculators say they will run have more then just good drivers in the car. They also have a powerband that is likely flat as can be on HP. Smaller turbos running at high boost. Curt Brown comes to mind here. IMO, that guy runs fast for two reasons. True he's seemingly a hell of a driver, but secondly he also seems to always use the smallest possible turbo that can meet his goals. If I remember correctly, he switched to a "GT37R" and didn't really go any faster then the GT35R. I would say you David also follow this mentality on most of your setups.

Max out that GT42 on boost and keep it in boost the whole way down the track. Team it up with adequate gearing and a clean pass with ample traction and the numbers should work out. But none of that really happens on these GT42 "street" EVOs. They have powerbands that look like mountains with much lower averages. Gearing that gives up a lot of usable power. Traction... hahahahaaha

 

Al, Were you talking about the silver ams 35r car.

Didn't you win that race because the ignition broke up on the AMS car. Or was that the run where the throttle cabel got pulled into the timing belt and it overrevved? Adam ran quicker than you all day that day then something happened that pass.. I dont quite remember what.

 

Very well said... I agree in the fact that this thread is mainly crying about someone else's setup blah, blah, blah, blah.

Just worry about what YOU got and not someone else. It's the easiest way to lose before heading to the track.

 

bro...

 

We has a saying posted over the engine dyno console where I first started working in engine development "Horsepower sells engines, but Torque wins races" it's still valid today. That sign was made by Dale Drake father of the Drake Offy Indy engine in the 1960's for us to think about when we ran engines on the dyno. The peak number does not mean anything without a good curve under it. Al I think yours qualifies. Indy

 

It's interesting to see how much power to weight really makes a difference.Does anyone know what Curt's car weighed when he went 9.3 ?? Dave your car's weight is around 2850??at 9.6.
It would be interesting to see what the difference's are between the two in weight, at those traps speeds and h/p.Thanks.

 

Your car is pretty light when are you going to the track? If it's a duplicate of Buschurs's street evo then it should be running in the 9s and trapping in the 150mph range.

 

Thanks David!

 

From page 6.

crcain, my car on normal radial tires ran a 9.77 a 148 mph. With a lighter-taller wheel/tire combo on a DOT Hoosier it ran a 9.65 at 151 mph. Not a large difference in either ET or MPH.

Jim P., as I said later in this thread, this is not directed right at Paul but of course Paul fits the description. It's great to see someone with enthusiasm with their car. I like that. I've told Paul personally that ETS/Lucas are very lucky to have someone like him out there promoting the hell out of them every chance he gets, it's awesome.

What get's me fired up is the crap talking and jabs/stabs. That's when it is no longer about just someone having fun and such. It then becomes personal.

You don't see me talking crap about what we are going to do with our car or take jabs at other people when we post videos and such. That is personal and is out of the "fun" factor. Think about it and consider it.

Al has continued to run very fast with his car and believe me, it's much heavier than all of the rest of the EVO's running, he has backed up what he has put down on the dyno when compared to the weight of his car. Hell is "race" car is heavier than my RS. Al is over two times the weight of Trent, who drives my car.

04awdevo, not sure why your eyes are rolling around when people talk about dyno numbers not meaning much. Maybe an eye doctor is needed Think about what I am trying to say. A car that makes 1,000 whp and runs 155 mph and then another than makes 870 whp and runs 172 mph. Both cars within the same area on weight. What does the dyno number mean? Not much. The other problem is the power curve itself. A big peak number sounds good but making a car get down the track like that is a joke, it won't run a good number or ET. I will also tell you that you can get two different drivers in a car and run it and if the skill of the two drivers is different the MPH will be closer together than the ET's. For example, I know I stink, I've never been the best running a manual transmission, I know that. With that said, if you put me in an EVO and put Trent in the same car he may knock off a full second from the ET compared to mine, but the MPH will be fairly close, much more inline that the ET will be.

Just so everyone knows, Daniel, my brother, drives our (my) black EVO. This is an arrangement we worked out from day 1. He also does ALL the work on the car, it's a good trade as I certainly don't want to work that hard! haha

My good friend Ron Luman bought Kenny Dutweillers twin turbo Buick. 1400+ hp. He ran it for a year or two. He ended up hurting his back and had a hard time getting in and out of the car. At the time the quickest/fastest I had ever gone in any car was a 9.4 at 147 mph. He asked me if I wanted to drive his car, I laughed and said OF COURSE! The very first time I ever sat in the car I ran a 8.2 at 167 mph. I had never even started the engine before that day. I was #1 qualifier at the first race with the car. I was also #1 qualifier at every other race we attended except for 1. We won I-don't-know-how-many races with the car in the 3 years I drove it. We had so much freaking fun racing/traveling together. It was an absolute blast. Ron acted like a proud dad most of the time, made me happy and proud to drive the car. The point is I use to wonder to myself how someone could own a car like that and get any enjoyment at all out of standing on the starting line and watching it be driven down the track by someone else. I just didn't get it. Then with the EVO's I started to let other people jump in the driver's seat and saw that they would go faster than I was. It hurts at first and then you realize maybe your job isn't to drive but to watch the car and figure out how to make it go faster. I am much better at figuring out what the car needs and tuning it than I am trying to launch and shift a 5 speed. Put an automatic in the car so my handicapped *** can drive and I'll show you what's up though! haha

Get the best man for the job, that's how I look at it.

 

david,

to read this thread it seems like you feel threatened by the competition.

im trying to figure out why you started this thread, all i can figure is you are losing sleep because someone else is getting some of the spotlight in the evo world besides you and you cant stand it.

this is obviously a direct attack on paul nelson.

 

I just want to give Butcher road head, Is that too much to ask!?