Im trying to keep the stock spool and make 450whp on 100 @ all times, so I dont see a need to go larger if the smaller turbo will get me there.
Maybe when I get an ems I might consider it.
Also the motor build wasnt done by choice and since the motor was out, why not do the stroker and head @ the same time....

 

Forgot, when I talked to ATP I was considering doing the 3037 until they told me it was about 800-1000 laggier than the 3071..

 

What Ted and Trinidex is trying to say is with 30% increase in displacement .. LAG is not an issue with the 3037 .. worse still.. you may be stifling the 2.4 motor with a smaller turbo..

 

iunno about lag not being an issue on the 3037... it's not gonna offer the same spool up as a 3071 on stroke or not...

thing is this... the 3076 is just the same as the 3071 cept the blades are bigger on the comp wheel so you can afford the extra mass this induces because you got strokered. and you should take this because you don't want to choke your flow with your tiny comp side.

think of stock turbo right now... we can outflow the stocker with our engine at 2 liters. the boost tapers... ANNOYING and BAD for power curve agreed? hence the need for the 20g or something to help out the flow capacity. think of the 3076 as a super comp wheel upgrade for your 3071... tellin' ya.... you don't wanna cap your flow outta that huger motor.

also... you need an ems right away if you are gonna run more displacement and more head flow. what were you planning on running? afc or flash? that's not gonna cut it. your air flow is drastically different after a stroker and head work and your maf sensor at this point may become a restrictin that you wanna remove. (it can very well be done true... but why? do it the right way!)

btw... you cannot by any stroke of flashing or even afcing get the car to run to any degree of "well" by not having an ems and the upgrades that you're claiming.

 

there is a smaller size similar to 2835 which has plenty of mid and just nice for track

 

we had i in stall a 3071 which clocks 410hp on a dyno here with stock engine but has a lot of lag but once the rpm goes up the power is really nice

 

Actually .. the numbers maybe different .. but w're talking about the same turbo .. a 3037 is HKS speak for a 3076 ATP and 3052 .. it really depends on how a shop or company wants to name it .. the difference will be in the AR size of the housing .. as even a 3037 has a myriad of selections for housings..

The lag portion is subjective and what you compare to
but for similar spool to stock with a 2.4 engine .. the 3037 is actually close enough .. of course the 71 will definitely spool better and the stock turbo best ..

 

Well, you can trust that I would love to get an ems right away, but the funds are tapped out and just have to make do.
I see your point about maxing the flow from the 3071, thats why I went with the larger a/r to help the flow a bit..
Either way Im sure this will be a learning experience, I just hope for the best and also hoping this thing spools like mad.
Oya, Ill be using a flash from Dynoflash until the ems...

 

the thing is the 3037 is the largest of the 30 series turbos and it just as mismatched. it is so laggy on the factory 2 liter... i woudln't doubt that it would pep up on a stroker but that's just a bad way to do things... that has bandaid written all over it.

 

anybody have any idea if you stroke up your engine would the 3071r still be usable??

 

you'll basically be running a stock turbo on a bigger engine... which means your boost will taper even more than it does now with stock turbo stock engine.

 

Obviously 3071r is bigger than the stocker and Ive personally seen the 3071 hold 26psi to redline, the stock turbo would never do that.
If the 3071r was the same size as the stock, I doubt it would as popular as it is...
On ATP web site there dyno graph show the 3071r making 375whp with only a flash, injectors, fuel pump and 3"exhaust, I dont recall any stock turbos with the same mods making that king of power.

 

it's a similar to stock sized turbo, and i admit the analogy was coarse but the idea is illustrated. you will cause it to taper because you're flowing much more air on a stroker motor. it's not about being able to hold 26psi... ti's about being able to flow a certain amount of cfm or rather a certain amount of air mass through the turbo both hot and cold sides.