GT-14 to big for FWD?

[DSMhelex]

I am tihnking about putting in a GT14 turbo on my FWD. I'm doing a stroker 2.3L and im currently running an evo3 16g turbo with 550's. I Basically am looking for my car to be a streetable 360whp. I put down 260whp at the dyno and wasn't very happy so im stroking it.
My concerns is that the gt14 turbo is too much for my fwd with all the traction issues. Is the gt14 overkill? Will i be able to acheive my 360whp mark with my e16g and 550's? (with help of cams,gm maf, magnus mani, etc.)

anyone else running a similar setup?

 

[Liger]

that to me seems awefully low dyno numbers for the mods that you have. I dynoed at 335 awhp about a week ago on 20 psi. You should be able to hit 360 on race gas or a good tune on pump i would imagine. Seems to me like a good tune is necessary. Brandon [VFRacing]

 

[liquordrunk]

My concerns is that the gt14 turbo is too much for my fwd with all the traction issues. Is the gt14 overkill? Will i be able to acheive my 360whp mark with my e16g and 550's? (with help of cams,gm maf, magnus mani, etc.)

anyone else running a similar setup?

If you want to hit 360 with an EVOIII16G youll need a little more than than a 16g..with race gas and very lean you may hit. 325.. guestimate. my friend hit 312 on a 1g stock motor at 23 psi on 93. the gt14 will be hell on a fwd. but i ran basically the same thing FPRED. on my 91 talon. no traction through 2 gears and if I was on my radials not a whole lot in 3rd. but on Drag radials i ran 19 psi on the FPRED. and it was a topend KILLER..
youll need a 50trim at least.. or a shot of Nitrous. hope this helps

 

[missouri_dsm]

If you want to hit 360 with an EVOIII16G youll need a little more than than a 16g..with race gas and very lean you may hit. 325..

It is very possible to hit 360hp with an evo3 16g. There have been a few get over 400hp with an evo3 turbo.

 

[BenHenthorn]

I think it's worth mentioning that a 2.3L Stroker is a bit of an overkill if your goal is 360 WHP. An EVO III Big 16G will put down around 350-370 with a good tune and proper MODs. It looks like you have plenty of MODs but I'm not sure why your DSM isn't 300+ WHP as it is now.

The MODs that I would consider if I were you is at least 650CC injectors, maybe a 255LPH fuel pump (yours might be fine), and I didn't see anything about a fuel pressure regulator in your MOD list so I would add that to the list. You'll also want to get your car Dyno-Tuned, you could have twice as many MODs but they won't get anywhere or last very long if it's not tuned.

My 2 cents, hope this helps.

 

[CanadianTSi]

The GT-14 is a pretty big turbo.

I would go with something like a 50 trim to easily hit your goal.

 

[liquordrunk]

It is very possible to hit 360hp with an evo3 16g. There have been a few get over 400hp with an evo3 turbo.

I know of 2 from around where i live but they had more mods than i do with my stroker and fpred. as in alky inj and COP. I misread and didnt see the 2.3 that he had listed. thats my fault. but still with his setup right now at 260 well that means tunning is an issue, so it may be harder for him to hit 350+ than most..

 

[missouri_dsm]

slowboy racing is where you had your car dynoed and they hit the 400hp mark. Why dont you ask them to help you tune it. On another note check out 90tsiawd on page 2 of the dyno page. Check out his mods and he is at 413 whp on an awd. A fwd should be able to get to that point a lot easier since they are lighter and dont lose as much power between the flywheel and the wheels.

 

[boostedinaz]

I think putting a stroker on a FWD car is going backwards. Lowend torque and FWD dont mix well. I would build a 2.0 and perhaps put a 50 trim on it, with that 400 to the wheels should be cake.

 

[hks-gst]

THE GT 14 is a bigger turbo there for spool will be slower even if it is ball baring I would not stroke the motor instead I would get lsd and a gt30r. Also depends what kinda racing you do. If u race on the highway you dont really need to worry about traction to much .

 

[GPTourer]

Yes, 260 is kinda low - but then 287 isn't much better. I see you have the 34mm flapper too. That is what is holding you back. I am either going to shim my wastegate or replace the turbo altogether. You should be able to get into the 325 range on pump with a EvoIII. I would see what the car feels like at that level before spending a grip on such a big turbo and stroking the engine.

 

[xad_theman]

Yes, 260 is kinda low - but then 287 isn't much better. I see you have the 34mm flapper too. That is what is holding you back. I am either going to shim my wastegate or replace the turbo altogether. You should be able to get into the 325 range with a EvoIII. I would see what the car feels like at that level before spending a grip on such a big turbo and stroking the engine.

Hey, i'm not too familiar with this stuff, so i was wondering...

howcome the 34mm flapper would be holding him back?

 

[boostedinaz]

Hey, i'm not too familiar with this stuff, so i was wondering...

howcome the 34mm flapper would be holding him back?

When you try to run more boost the larger flapper has a harder time staying shut becasue of its area. It basically blows open and wont let you get past a certain boost level.

 

[4G63 For Me]

GT-14 is WAAAY too big for 350 WHP. Go with a 50 trim max like someone said already.

 

[xad_theman]

When you try to run more boost the larger flapper has a harder time staying shut becasue of its area. It basically blows open and wont let you get past a certain boost level.

so you'd want a smaller one or bigger one?

 

[GPTourer]

so you'd want a smaller one or bigger one?

You want the stock 31mm flapper that comes with the turbo, then you port the exhaust housing well - or you use an external wastgate.

 

[SpoOLxExO]

There is no turbo that is too big for a FWD car.

A turbo with more lag, or a bigger hotside will help the car get out of the hole better while making tons of power "out the backdoor" as drag-racers like to put it.

Its all about traction, and since you dont have any (not trying to be rude, but its reality) you want the powerband to come in later in the RPM range.

A GT 14 Flows damn near 55lbs/min I am hearing, so the 350WHP wont be a problem at all.

EVOIII is a mint turbo, got one meself. But not very well suited to a FWD car in regards to power delivery.

ROck ON!

 

[Red97Eclipseboy]

EVOIII is a mint turbo, got one meself. But not very well suited to a FWD car in regards to power delivery.

ROck ON!

With some cams and a large FMIC it is!

 

[SpoOLxExO]

Got me confused, not sure what you are referring to.

I noticed in your profile that you have cams, FMIC, etc.

Are you saying that your set-up makes the tires smoke, or that it goes good?

Either way the point I was trying to make is a large turbo with some lag is the best type of turbine to use with FWD in mind.

 

[Red97Eclipseboy]

Got me confused, not sure what you are referring to.

I noticed in your profile that you have cams, FMIC, etc.

Are you saying that your set-up makes the tires smoke, or that it goes good?

Either way the point I was trying to make is a large turbo with some lag is the best type of turbine to use with FWD in mind.

Hahaha! Sorry. I meant with my cams and the FMIC I get more lag. I love it! It helps a lot!

 

[Malero5]

AM i blind.,...... I dont see new cams.....

 

[SpoOLxExO]

Haha, now everyone is confused.

Red97eclipseboy was saying that a small turbo like the EVOIII can be laggier (Good for FWD) when cams and a big FMIC are introduced into the equasion.

He(red97eclipseboy) happens to have this combo and likes it. But not suggesting that the original thread starter (DSMhelix) has cams, or should get them. Just giving experiences.

 

[GPTourer]

Red97eclipseboy was saying that a small turbo like the EVOIII can be laggier (Good for FWD) when cams and a big FMIC are introduced into the equasion.

I second that notion. Even before I got my cams and FMIC it was fine. Hell, just about any decent turbo upgrade spools slower then the T-25 and with the right suspension mods and good tires is more then manageable on a FWD.

 

[DSMhelex]

Thanks for hte replies guys.

I totally forgot about the 34mm flapper... i'll take that off when i get time. I had it originally installed last year because i only wanted to run 12psi on it until i got power hungry and wanted to up the boost.
I'll grab that and a FPR.
As far as tuning goes... Nate at slowboy dyno tuned my car mid august for two hours. Seemed to run great after that. i only put down 260whp. i havent changed a thing since then.

The problem that i have right now is that i have some weird noises coming from the block. I'm guessing its a rod bearing, but my mechanic says its a piston slapping. So i need a rebuild and was just throwing a stroker option out there, but most of you suggested i go with stock bottom end. I may end up HAVING to bore it out if a piston is slapping, so i may need 20over pistons and aftermarket rods. Should i just do that or spend a few extra and stroke it? i'm torn.

 

[GPTourer]

I don't think you can just remove a 34mm flapper. The wastegate hole can't be unbored. That is why shimming it, or welding it shut and going external are the only option.

Most people say building a 7-bolt is bad news. I would only do it if someone like Magnus is behind it because they seem to think they have CW solved. You might visit their site and read their tech articles on it.