Can a twin screw car be competitive for the top end?

[justinschmidt1]

All these people aon here that say Centri will pull harder on a highway only say that be cause they have no way of ever affording a twinscrew.

My Kenne Bell 2.1 Pulls WAY hard all the time.....and pulls even harder at top-end because i boost 11 PSI at 2,000RPMs but after 5,5000RPMs I get 12 PSI of boost.

This so coming from someone with actually boost experience.

Justin is stupid, The whole point of the twin screw is that there is No power loss or Boost loss through the whole RPM band. Max power all the time.

lol, someone that has boost experience ONLY with a twin screw.....

anchor room has it right, there are many variables.....but in the case of say a vortech SI vs a KB 2.1,sorry, the vortech will win on the highway every single time. Its just more efficient up top.

And this is coming from someone who has years of boost experience and has driven many twin screw/ PD blower cars, and pulled many twin screw or PD displacement cars from a roll, even ones with more power.

 

[justinschmidt1]

Who cares though?

It all depends on what you want to do.......


Im set on going turbo now....

 

[Slykin]

Not to derail this thread too much, but how expensive is it to run a turbo setup that barely lags? I assume you'd have to go with a small TT setup.. but that's about all I can figure.

 

[justinschmidt1]

Not to derail this thread too much, but how expensive is it to run a turbo setup that barely lags? I assume you'd have to go with a small TT setup.. but that's about all I can figure.

I guess whatever the cost of a twin turbo setup would be...its not cheap but I cant imagine a V8 turbo setup lagging much....

I know that my car with the auto and 3800 stall, lag probably wont exist.

 

[Slykin]

Yeah.. I guess i'm just trying to get the best of both worlds. Power, efficiency, and no lag. I'd like to build a "grand-touring" car that I can run on long trips and not worry about MPG, have buckets of power, but still be able to AutoX with.

 

[g36 monkey]

Handz, you're right. No one could ever afford a KenneBell. You must be the richest man alive, your CG gig must be payin off.

 

[chaz]

I start building boost at 3100 and am full boost 16lbs at 3400. I have a single 66

 

[chaz]

Handz, you're right. No one could ever afford a KenneBell. You must be the richest man alive, your CG gig must be payin off.

LOL at this... I know I couldn't

 

[ivan12]

Lol at Handz "people can't afford a twin screw" STFU. I had the money then and have the money now to get one. But with the money I would've spent on a twinscrew and made a tops of around 350rwhp on a stock heat soaked engine I bought a TFS top end and an intercooled centri that's making 475 rwhp. Just because people don't have them doesn't mean people can't afford them.

For the sake of the argument above. If cars are identical, one with twinscrew, centri, turbo, and they all make the SAME PEAK Hp then the twinscrew has the advantage because it goes into maximum boost right away while the turbo and centri have that small lag and their power has to climb.

 

[justinschmidt1]

Lol at Handz "people can't afford a twin screw" STFU. I had the money then and have the money now to get one. But with the money I would've spent on a twinscrew and made a tops of around 350rwhp on a stock heat soaked engine I bought a TFS top end and an intercooled centri that's making 475 rwhp. Just because people don't have them doesn't mean people can't afford them.

For the sake of the argument above. If cars are identical, one with twinscrew, centri, turbo, and they all make the SAME PEAK Hp then the twinscrew has the advantage because it goes into maximum boost right away while the turbo and centri have that small lag and their power has to climb.

I disagree, a turbo car even with the exact same HP as a twinscrew will probably lay down 100+ ft lb of tq

 

[the.greg]

Handz must be the richest person on here. A pi gt with a intercooled kb setup, wowzers! lets all bow down to the guy who thinks this setup "pulls WAY hard all the time". What a joke, go drive a legitimately fast car before you act like you drive a rocket ship. Don't kid yourself Handz...

 

[ivan12]

Well that depends on the engine as well and how much power the engine makes.

 

[justinschmidt1]

Let me put it this way:
[video=youtube;goRq2Jlhz9c]http://www.youtube.com/watch?v=goRq2Jlhz9c&feature=related[/video]

70mm On3performance turbo kit
Stock Block
8psi
417hp 532trq
sss terminator exhaust
60lb injectors
pmass blow-thru maf

that car made 530 ft lb of tq with 417 hp.

a comparable vortech or twin screw car would make the same hp, but about 400 ft lb of tq

 

[SRT Handz]

I dont believe the car made that much torque..... it will break at that point.

 

[justinschmidt1]

I dont believe the car made that much torque..... it will break at that point.

haha, dude...it did.

They all make that much torque.

Turbos rule

 

[justinschmidt1]

Another one, 666 ft lb with only 488 hp. around 180 + ft lb over 488 hp

 

[SRT Handz]

all dynos are relative. I bet if he dyno'd on my tuners dyno it would read WAY less on 4.6.... You and I both know 4.6 can handle that power.... maybe on a built motor.

 

[ivan12]

I dont believe the car made that much torque..... it will break at that point.

Not sure if sarcastic or.....

 

[SRT Handz]

It was a serious comment..... These 4.6 pistons and rods cant handle that..... Justin and I both know it.

 

[justinschmidt1]

all dynos are relative. I bet if he dyno'd on my tuners dyno it would read WAY less on 4.6.... You and I both know 4.6 can handle that power.... maybe on a built motor.

It can handle it, just not long.

Ive seen lots of 2vs handle over 500 rwhp on the stock bottom end for a while actually.

ANd im sure the second one I posted was built to take 16 psi like that