Best turbo Size for SR20DET

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JDM240sx
Posts: 33
Joined: Mon Sep 02, 2002 5:53 pm

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Whats the best size turbo for the SR if you wanna be in the 500rwhp range? Im not too familiar with the SR. Sorry. Im used to the 2JZ's and 13B's :)This is my first Nissan venture :)

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SpeedRacer1
Posts: 3144
Joined: Fri Jul 26, 2002 7:44 pm
Car: 1990 240SX, G35

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To put up those numbers you'll be running a big turbo with alot of lag. Do you have a particular company in mind?
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JDM240sx
Posts: 33
Joined: Mon Sep 02, 2002 5:53 pm

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I was thinkin a Garrett T04S via a custom kit thru XS-Engineering. It all about the prices right now. I also did notice that Blitz make a nice kit that includes a manifold and wastegate, but I have no specs on their K3T turbo. But im sure that crazy $$$ as well. Right now Im just weighing my options and laying out a few scenarios. Turbo Lag is something Im not too worried about as yet. I know someone running a T-70 and their at full boost (19psi) at 3700RPMs. if a T-70 can be fully boosted at 3700 Im sure a smaller T04s can be at full boost sooner than 3700 with the right setup.
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SWIFT_DRIFT
Posts: 1340
Joined: Thu Aug 29, 2002 7:21 pm

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are you going to do anything about the sr's internals so it can handle the hp you want?
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JDM240sx
Posts: 33
Joined: Mon Sep 02, 2002 5:53 pm

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IF i am boosting past 15 psi. I will certainly get metal head gasket, forged pistons and rods and ACL bearings. But I am uncertain about valvetrain. Does that need to be beefed up as well? or can I get away with stock valves and springs etc?
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Nismo_Freak
Posts: 11665
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 240SX

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I would run a HKS 3240 turbo... twin ball bearing turbo capable of 30 more HP than the T04S and given the A/R and trim it will spool earlier too.
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Nismo_Freak
Posts: 11665
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 240SX

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Forgot to add... I would upgrade to a lifter failsafe brace, titanium retainers, forged or titanium springs, and new cams will help flow and can help to spool the turbo.
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SWIFT_DRIFT
Posts: 1340
Joined: Thu Aug 29, 2002 7:21 pm

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you can get the hks 3037S with the same trim and a/r as the 3240.
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