Street Racing & Kill Stories - Cam only LS1 vs. S2000 preciscion 76mm turbo+meth and a few other races

A couple of friends and I rode out to a local meet in Columbus, Ga last night hoping to get some street pulls in. It was me in my car(mods in sig), two 2v mustang gt's one on spray and another one bolt-on and stalled, both had steep gears 4.10's I believe.

Race 1- My car vs. bolt on stall 02 gt

Just like I thought, I honked it off around 45 mph in second gear, pulled like a length or two to third and proceeded to put another 4-5 cars on him by the top of fourth. Hell, that was no problem but his car is pretty quick for what it is.

Race 2- My car vs. S2000

Some fat little kid with bad teeth comes up asking who's camaro is that and I introduced myself. He said a guy with a S2000 want's to know if I'd like to run. Of course I gotta take him up on it but upon inspection, this is no regular S2k.
It's got carbon fenders, huge front mount and two wastegate pipes vented through a hole in the hood. He claims to put down 530 hp with meth and 14 psi. I said ok it's whatever and I followed him down to a decent spot to get some 40 rolls, which that was the race he wanted, since he's on a stock rear end.

1st race-
He is able to brake boost pretty good, but he went sorta early because we couldn't hear my horn over his turbo and my car, (lm exhaust no slp resonator=straight pipe). I pull a car 2-3 and when I hit fourth he starts to reel me back in and proceeds to put 1/2-3/4 a car at the top of fourth.

2nd race-
He's late to brake boost and I take the hit from that pull a good car and a 1/2 he starts to catch me by the top of fourth but I win by a 1/2 car this time. Also had to slow up for a turn which was really scary on a two lane from 135 or so..

3rd race-
Pretty much identical as the first but he puts a car on me at the top of fourth. He left kinda early too, but it could be because of not hearing the horns again.

These were the best races I've had yet and that car is completely rediculous and full boost.

I was going to race another f-body that has similar mods to mine. But a cop got behind us and the guy never saw him so he was still trying to race and got us pulled over. The cop just gave us a warning because he never witnessed us racing...damn it was close though.

Most people know not to race there if cars are visible behind you.
He apparently didn't get the memo.

Anyway it was a good night, I never get to race like that so I had a blast.

Nice runs.

As a turbo guy, i've got to say...What a stupid setup on that s2000!

Running a giant turbo at low boost pressure is incredibly inefficient, and makes for a car with terrible manners (high spool rpm and tons of lag) and no midrange power.

It probably does make 530 peak whp, but has no area under the curve, so it's not nearly as fast as a well prepped 530whp s2000 should be.

I'm guessing this is a stock motor, so if he just put a thicker head gasket to lower the CR and a set of head studs, he could run a mid-sized turbo at say 25psi, make the same peak power with much more tq, much lower spool rpm and much faster spool time. It would be a significantly faster car with the same hp number.

Depending on which 76mm, he should be making 800-1000whp (unless it's a chinese ebay turbo) and running it at 40+psi, because that's the only way a big turbo will run efficiently on a small engine.

Also, he didn't want to race from a dig because he knows his 1000rpm powerband is only useful at high speeds. I doubt he's afraid to break his rear end with the whopping 300wtq that silly turbo setup makes.

The setup as far as quality for very nice. The manifold was very well crafted and the turbo was a actual precision turbo. It also had two tial wastegates...
it pulled like a beast between 5k-9k rpms. He def sounded like he was running more than 14psi but that's what he said...

he also failed to mention the meth until after the race.

set up looked identical to this one but with polished valve and coil covers...

The setup as far as quality for very nice. The manifold was very well crafted and the turbo was a actual precision turbo. It also had two tial wastegates...
it pulled like a beast between 5k-9k rpms. He def sounded like he was running more than 14psi but that's what he said...

he also failed to mention the meth until after the race.

He needs the 2 wastegates to prevent that monster turbo from doing what it was built to do, make monster boost!

Precision makes good turbos. In ball bearing trim with large housings that turbo costs $3000 and has pushed a 3500lb F-body to 8.5 @ 165. Very nice turbo, if you can actually use its potential.

With a journal bearing and smaller housings, it's a lot less potent, but still good for 800whp.

Now you see why i say it's retarded to run it at only 14psi on a 2.0L engine?

He has all the drawbacks in terms of spool rpm and lag of an 8 second car, in a car that probably struggles to run 12s because it has a very narrow powerband.

What kind of power are you making? I'm surprised he kept up with you.

Good kill, man! Always fun to beat or hang with a car that you think is going to walk you.

Wow great story, before reading this I didn't think the outlook was good for you lol. But I'm glad to hear you didn't have a problem hanging with him

Unless there is a LOT to the S2K, that is a LOT of turbo on that engine...

Nice runs

-Will

bad running s2000 if u ask me. but great races regardless

Nothing's wrong with his car, he was just spinning and couldn't snatch gears because of stock trans and rear end. I knew the race was going to be a catch up race for him because of the huge turbo and semi-small tire(275).

FWIW: I believe he was running more like 18-20 psi.

He needs the 2 wastegates to prevent that monster turbo from doing what it was built to do, make monster boost!

Precision makes good turbos. In ball bearing trim with large housings that turbo costs $3000 and has pushed a 3500lb F-body to 8.5 @ 165. Very nice turbo, if you can actually use its potential.

With a journal bearing and smaller housings, it's a lot less potent, but still good for 800whp.

Now you see why i say it's retarded to run it at only 14psi on a 2.0L engine?

He has all the drawbacks in terms of spool rpm and lag of an 8 second car, in a car that probably struggles to run 12s because it has a very narrow powerband.

What kind of power are you making? I'm surprised he kept up with you.

Car could def. run faster than twelves. I have around 410-415 hp. approx. never dyno'd so Idk. I have a bad ass tuner, and the tune is spot on +/-4% correction..

If he really had 500whp +, he should have eaten you alive. Should have whipped out the handy dial caliper and measured his wheel :drive:

Good runs! That S2K sounds pretty nasty. Wish you had it on video so I could have heard the car. I do agree that he needs a smaller turbo to run efficiently but good runs

Car could def. run faster than twelves. I have around 410-415 hp. approx. never dyno'd so Idk. I have a bad ass tuner, and the tune is spot on +/-4% correction..

Just because you can run faster than 12s doesn't mean he can.

Spool-> spin -> shift ...........spool-> spin-> shift-----Spool .....you get the idea.

If he really had 500whp +, he should have eaten you alive. Should have whipped out the handy dial caliper and measured his wheel :drive:

Not when the powerband is 300rpm.

Not when the powerband is 300rpm.

This is a little exaggerated, don't ya think?

This is a little exaggerated, don't ya think?

You got the point, didn't you?

You got the point, didn't you?

Eh... I disagree though. At absolute 100% everything is a failure worst case scenario (regarding spool time) he's fully spooled by 6,000 rpm. He's still got till 8500 or 9000rpm before he needs to shift, and with the close ratio 6spd that car should move the fuck out... if he can drive.

Also I don't really agree with the 'big turbo at low boost is inefficient' point you made. It's pretty widely accepted that a bigger turbo is more efficient at lower boost than a smaller turbo. He may have been "only" running 14psi, but that's a lot of air when the car is pushing 8000+rpm so the point is moot anyway.

it pulled like a beast between 5k-9k rpms. He def sounded like he was running more than 14psi but that's what he said....



Spool-> spin -> shift ...........spool-> spin-> shift-----Spool .....you get the idea.

Not when the powerband is 300rpm.

Doesnt sound like a 300rpm powerband from the ops point of view, but I understand. 76mm is WAY to big for any car like that.

6262's make over 600 on pump on those cars.

Eh... I disagree though. At absolute 100% everything is a failure worst case scenario (regarding spool time) he's fully spooled by 6,000 rpm. He's still got till 8500 or 9000rpm before he needs to shift, and with the close ratio 6spd that car should move the fuck out... if he can drive.

Also I don't really agree with the 'big turbo at low boost is inefficient' point you made. It's pretty widely accepted that a bigger turbo is more efficient at lower boost than a smaller turbo. He may have been "only" running 14psi, but that's a lot of air when the car is pushing 8000+rpm so the point is moot anyway.

I agree......14psi on a t76 is the same amount of air as say 30 from a t60. Hence more efficiency.

Doesnt sound like a 300rpm powerband from the ops point of view, but I understand. 76mm is WAY to big for any car like that.

6262's make over 600 on pump on those cars.

76 isn't WAY too big for 530whp... People throw big turbos on cars to make 'mediocre' numbers all the time. Just because the turbo CAN make a certain number doesn't mean you should aim for that number... OMG 76?! Should be 1000whp!!! Shit 16g's on old DSM's CAN make 400whp... but should you aim for that? Fuck no... if you're pushing more than 300-310whp you're already pushing the limits of the turbo and are running out of it's efficiency range. Then you need to band-aid the setup to make it work, and will be inevitably stricken with a bunch of bullshit issues that could have been avoided all together if you chose the properly sized turbo for the power you want to make in the first place.

a 76mm is too much turbo for an S2K. A 76mm on a Supra with a built motor at 28-30psi will make over 1000rwhp on most setups. He can make the same power at a little more boost with a 6262 and have a much better powerband and much more torque.

I agree......14psi on a t76 is the same amount of air as say 30 from a t60. Hence more efficiency.

More flow at the same boost level is not more efficiency. More hp per lb of flow is more efficiency. Also consider "area under the curve" vs peak power.

a 76mm is too much turbo for an S2K. A 76mm on a Supra with a built motor at 28-30psi will make over 1000rwhp on most setups. He can make the same power at a little more boost with a 6262 and have a much better powerband and much more torque.

Agreed, thank you.

76 isn't WAY too big for 530whp... People throw big turbos on cars to make 'mediocre' numbers all the time. Just because the turbo CAN make a certain number doesn't mean you should aim for that number... OMG 76?! Should be 1000whp!!! Shit 16g's on old DSM's CAN make 400whp... but should you aim for that? Fuck no... if you're pushing more than 300-310whp you're already pushing the limits of the turbo and are running out of it's efficiency range. Then you need to band-aid the setup to make it work, and will be inevitably stricken with a bunch of bullshit issues that could have been avoided all together if you chose the properly sized turbo for the power you want to make in the first place.

I didnt say it was to small for 530 whp, I said it was to small for a 2.0L 4 Cylinder. Thats a turbo you put on a v8 with cubes. If you choose to make "only" 530 then fine, but its more then likely never even going to see its potential in a street driven s2000.

Maybe he meant a 67 and not a 76? Regardless... it's still not the most awful choice ever.

Plotting the engine on basic T76 map we can see its a pretty terrible choice.

http://img.photobucket.com/albums/v503/xLightningx/t76.jpg

How do you figure? At 14psi the car would be right in the middle of that graph. Plotting compressor maps isn't my strongest skill... but that's what it looks like to me.

He needs the 2 wastegates to prevent that monster turbo from doing what it was built to do, make monster boost!


He's running two wastegates because he's probably running a twin scroll setup.

How do you figure? At 14psi the car would be right in the middle of that graph. Plotting compressor maps isn't my strongest skill... but that's what it looks like to me.

14 psi is the lower line. The far right hand side is 9000 rpm

Who said he revs to 9k? Is this an AP1?

Who said he revs to 9k? Is this an AP1?

Its not really important. Even it was the 2.4 revving that high it would just barely be touching the better part of the turbo.

Its not really important. Even it was the 2.4 revving that high it would just barely be touching the better part of the turbo.

http://vimeo.com/13682341

smaller turbo and it seems like the turbo was just hittting full boost by 9K

That turbo is what i plan on running in a Mase kit lol (or close to it)

http://vimeo.com/13682341

smaller turbo and it seems like the turbo was just hittting full boost by 9K

On a street S2000 I wouldn't go bigger than a 67mm unless I wanted to make 900rwhp or more. And even a 67mm is too big for most uses on the street on a motor like the F20A unless you are making 700-800rwhp.

My boy spoke with the s2000 kid he wasent even sure what size turbo he had. But said s2000 did run off on a 383 lt1 with spray. So I think the op car is pretty dam quick.

My boy spoke with the s2000 kid he wasent even sure what size turbo he had.

I'm not surprised to hear this at all.

OP said the car was spooling at 5K. An S2000 couldn't even begin to spool a 76mm at 5K.

It was probably a 6262 honestly. Thats the new hot shit in the turbo world.

That 5857 in the video above is tiny compared to a 76mm lol

It was probably a 6262 honestly. Thats the new hot shit in the turbo world.

That 5857 in the video above is tiny compared to a 76mm lol

Yep, A 76mm will suck young children off the sidewalk as you drive by.

This is what a Precision 76mm looks like:

http://img23.imageshack.us/img23/3492/0119002100.jpg

it still sounded like a good night

It was probably a 6262 honestly. Thats the new hot shit in the turbo world.

That 5857 in the video above is tiny compared to a 76mm lol

<3 My Precision turbo.

Ran away from a 383 on juice vs a cam only camaro? or am i misreading and theres nitrous included??

That S2K should have murdered you, obviously he didnt put any thought into his build and just started throwing parts at the car in hopes that it would run good.

That S2K should have murdered you, obviously he didnt put any thought into his build and just started throwing parts at the car in hopes that it would run good.

How do you like those 4.10s vs. the 3.90s?

How do you like those 4.10s vs. the 3.90s?

I have 4.10's in my Coba, have had pretty much all the typical gears from 3.27-4.30 in a mate model mustang. If you have 3.90's, I wouldn't say that the small difference to get to 4.10's is worth the $$$.

-Will