Expected Power and Tuning for SR20DET

A place to discuss the systems and methods of tuning Nissan engines.
driftertim
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Joined: Sun Feb 04, 2007 12:26 pm
Car: 1992 240SX Coupe (SR20DET) Fully Drift Modded - Strawberry Face Conversion
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Hey guys, I have been purchasing a lot of parts for my engine for quite some time now to get it a few more steps closer to a reliable and fast street/track car. I just wanted to know expert opinion on how much the SR20det will make with the bolt-on's and ECU Tune. What are other better options? I appreciate your replies in advance.

I know some of you have talked about this MANY MANY times. I just did the post to get some more information from you SR Gurus out there.

1998 SR20DET Blacktop from 180SX typeX ( Got the VIN to go with motor )-S15-R Dual Ball Bearing T-28-300ZX MAF-740cc Deatschwerks -DC Sports Turbo Headers-Greddy type s BOV-Greddy Profec II SpecB -Greddy Elbow-Greddy DP-Greddy VSPL Tube n Fin-Apex'i N1 3" Strait through-Walbro 255lh fuel pump-Cat Remove-HKS Filter-ARC Intake Chamber-Koyo Rad + 2 electric fans

( IN HOPES A ROBIN ALMASI TUNE AS WELL )

There is a lot of suspension work, I just finished my GTR Brake swap/5 lug conversion. Too much to list elsewhere but the rear is getting a full multilink kit also from MEgan :-).

here is a peek at the front. :


Kalypso
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Joined: Tue Jul 24, 2007 10:10 am

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you're looking at 400hp easily.

its all in the ECU tune at this point for you. I dont know ALMASI

but removing the cat, ARC intake chamber, as well as little stuff like a nice Down Pipe that doesnt restrict flow and lightweight crank pulleys.

can bump that number up, before you know it you added an extra 20HP.and/or made your motor more responsive.

but most importantly - you've done well with the footwork

check out codyace's 400hp build thread

DrifterProdigy85
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Car: 1989 Nissan 240sx (Zenki Onevia)

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T28 isnt getting anywhere close to 400whp. You can reach 300whp with the setup you have now. If you add some 264 cams, you may reach 315whp. Gotta go with a bigger turbo, cams, and intake manifold to really get higher numbers.

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BigMACKenzie
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Joined: Mon May 05, 2008 5:52 am
Car: 1993 240sx convertible

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yeah with everything you have there and a disco potato you can hit up to 400hp. Send me an email and ask me for my sr20 HP/parts matrix if you want something really in depth. Its what parts you need form either jim wolff tech, HKS, Greddy or one other parts manufacturer to hit 250,300,350,400,450,500 and 600whp respectivly. I stole it out of a really old issue of either SS or something else that I picked up at the airport but its solid gold. BTW very nice job so far, you rock face my friend \m/__(X.x)__\m/

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supreamS14
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Joined: Thu Jan 04, 2007 11:13 am
Car: 96 240sx S13-blacktop Sr20deT

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Some places say 300whp with a gt28r. Garrett states 330whp. They make it so they know better than any1! The gt2860rs(DP) is rated to 360whp.740cc injectors can hit 460whp @ about 90% duty cycle. I smell at least a gt2871r 86 a/r
Modified by supreamS14 at 5:07 PM 7/3/2008

DrifterProdigy85
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Garrett ratings are engine power, not wheel horsepower. Figure in the drivetrain loss and you'll get around 300whp. Garrett rates the 2871R at 475hp too but you will never see one getting to 475whp unless there spraying a 50 shot of nitrous to boot. I used to run one and can say there good to about 400-420whp.

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supreamS14
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Car: 96 240sx S13-blacktop Sr20deT

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DrifterProdigy85 wrote:Garrett ratings are engine power, not wheel horsepower. Figure in the drivetrain loss and you'll get around 300whp. Garrett rates the 2871R at 475hp too but you will never see one getting to 475whp unless there spraying a 50 shot of nitrous to boot. I used to run one and can say there good to about 400-420whp.
Good to know!I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?

Kalypso
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DrifterProdigy85 wrote:T28 isnt getting anywhere close to 400whp. You can reach 300whp with the setup you have now. If you add some 264 cams, you may reach 315whp. Gotta go with a bigger turbo, cams, and intake manifold to really get higher numbers.
he's right get a gt2871r .64
supreamS14 wrote:Good to know! I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?
I dont think it can operate at 18 psi with that efficiency for long

DrifterProdigy85
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supreamS14 wrote:Good to know!I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?
Id like to see a dyno chart of that. Best ive seen on T28 and stock cams is 305whp @ 20psi using a AEM EMS. ECU Tunes are usually right around 280-300whp as well @ 18-20psi.

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Koshin
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280whp......

S14toRPS13
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I agree with others. You're max will be about 300 whp @ about 18-20 psi. It's just the nature of the turbo. Although 300 whp isn't as sexy as 400 whp, it's still plenty on the street. Also with that set up you'll still have good response and a wide powerband.

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Koshin
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S14toRPS13 wrote:I agree with others. You're max will be about 300 whp @ about 18-20 psi. It's just the nature of the turbo. Although 300 whp isn't as sexy as 400 whp, it's still plenty on the street. Also with that set up you'll still have good response and a wide powerband.
Correct....300whp on the street with good tires and suspension would ideal for most people.....it just comes down to if you are most people....it would be a very very responsive setup, as stated above

DrifterProdigy85
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And if your not like most people and want big power. Do what im doing. T3/T67 DBB.


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Koshin
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^^^you kind sir are not most people, lol. I think that setup is a little extreme for my liking, no offense. Its pretty gnarley. How laggy is that turbo gonna be?? What cams?? Nastiness, good job man. I'm a disco, or 2871 guy myself.....

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luv2spedup
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DrifterProdigy85 wrote:And if your not like most people and want big power. Do what im doing. T3/T67 DBB.
i have a similar setup as drifterprodigy.. from the looks of it, yes the turbo is laggy but when it hits it hits , it's out off this world

DrifterProdigy85
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Its a T3/T67 DBB and should be fast spooling around the 5krpm area. I run Tomei 270 Solid Cams and Tomei Solid Lifters. 8500rpm Rev Limit, only being limited by BC Valve Springs. Im restricted to power right now from my 740cc Injectors and MAF. Should be near 500whp @ 18psi though. The turbo is reported to hit 700whp @ 32psi. Im just waiting on IC piping then i can get to drive it. If i find it too laggy, i might spray a 50 shot for spool up. I dont think ill need that though cause my engine seems pretty free revving off boost.

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Koshin
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DrifterProdigy85 wrote:Its a T3/T67 DBB and should be fast spooling around the 5krpm area. I run Tomei 270 Solid Cams and Tomei Solid Lifters. 8500rpm Rev Limit, only being limited by BC Valve Springs. Im restricted to power right now from my 740cc Injectors and MAF. Should be near 500whp @ 18psi though. The turbo is reported to hit 700whp @ 32psi. Im just waiting on IC piping then i can get to drive it. If i find it too laggy, i might spray a 50 shot for spool up. I dont think ill need that though cause my engine seems pretty free revving off boost.
T67.....I bet it hits hard. Only t67 car I ever drove was a 1g DSM. It was gross....in a good way. just way to laggy for my taste. Your guys cars are going to be madmen....its funny


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