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  • #1

    Horsepower estimate

    I don't plan on taking the car to the dyno until I have a chance to get an aftermarket ecm or someone that can tune the stock one etc..
    Anyways, wondering if you guys could tell me about how much power i'm putting down?

    R33 GTR RB26DETT in my R32 GTR
    Apexi suction kit
    HKS Intercooler and hard piping
    Nismo downpipe and exhaust
    Boost restrictor removed?
    N1 turbo impeller upgrade on stock turbos

    also what would you say is too much power to the stock crank? got a spare rb26 motor, turbos, and tranny just sittin in the shop, and im willing to push the car a bit, but i don't want to throw a piston through the hood lol

    Just curious, I'm thinking the 350-400 range? (hopefully lol)
    Last edited by kyledude351; 12-23-2013, 02:52 AM.
    Just give it a couple hundred kilometers. It'll shoot you right in the wallet.
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  • #2
    Likely 280-300whp. When I first got my car I used a g-Teck meter and got 286whp with a similar set up to yours but with a stock inter cooler and R34 turbos.
    As far as how much hp stock internals can handle...
    I'm making 427whp with a stock oil pump. The car sees as much track time as it does street and haven't had a single issue. *knock on wood*
    Last edited by bobbo; 12-23-2013, 11:30 AM.

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    • #3
      Each engine is different, so could be less or more hp.

      Stock R32GTR engine puts down around 241awhp. FMIC adds up to 27hp. Exhaust adds 24hp or maybe more. Podfilters can add 11hp+, but stock airbox is better. Around 303awhp would be my guess, close to what bobbo has already said.

      Limited to around 390hp at engine (playing it safe) with stock injectors, stock fuel pump, stock AFM's. Change those and around 420hp at engine is possible with a basic boost up, ECU tune with stock R32 GTR engine (if turbo's, engine are in good condition).

      As far as I know, stock crank is good up to around 1000-1200hp, so wouldn't worry about that. Ringlands on stock cast pistons, stock conrod bolts (change around 550hp+ at engine), stock bearings are the main weak points in the bottomend up to 700hp on dyno (low budget build). Forged pistons (Tomei forged pistons or similar), ARP conrod bolts, Nismo bearings (or ACL race bearings) are the upgrade. Can reuse stock block or fit N1 block which has bigger coolant, oil galleries (helps to prevent block from cracking).
      Last edited by Skym; 12-24-2013, 02:32 AM.
      RESPONSE MONSTER

      The most epic signature ever "epic".

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      • #4
        thanks for the replies!
        just want to up the power a bit in my r33 rb26 for the time being.
        Got the r32 motor in the garage right now, slowly tearing it down to build properly, hoping to make a bulletproof 800-900 horse rb26 for the street one day..
        Just give it a couple hundred kilometers. It'll shoot you right in the wallet.

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        • #5
          Originally posted by kyledude351 View Post
          thanks for the replies!
          just want to up the power a bit in my r33 rb26 for the time being.
          Got the r32 motor in the garage right now, slowly tearing it down to build properly, hoping to make a bulletproof 800-900 horse rb26 for the street one day..
          Me too! but I only had $60k to build that so I decided to build a mediocrely reliable 600whp track/show car instead.
          No build thread.
          1991 nissan
          El terror

          "Built not bought" sooner or later = "broken not running"

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          • #6
            Yeah I don't have that kinda money lol
            I'm hoping to build it slowly over the years
            Just give it a couple hundred kilometers. It'll shoot you right in the wallet.

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            • #7
              Yeah, just as Skym mentioned each engine is different. Im running stock internals, with ARC FMIC, HKS pods, and custom dual 2.5 inch pipes from the turbos back. I'm making 350 WHP running a safe 11 psi on stock turbines.

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              • #8
                Sizing exhaust correctly, type of exhaust plays a role in producing more hp with a RB26. Also sizing intercooler correctly, type of intercooler helps. From what I can remeber from a dyno chart, the dual exhaust helped to produce more mid to high hp and single exhaust was for more torque, but produced no hp gain. The combo of dual exhaust, ARC intercooler, ECU tune could be why your car produces more hp.

                There's up to 40hp hiding away with a ECU retune (more if using a ECU with MAP sensor that removes the restrictive MAF's) at same boost level (20hp if you play it safe with ECU tune).
                Last edited by Skym; 01-15-2014, 04:27 AM.
                RESPONSE MONSTER

                The most epic signature ever "epic".

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                • #9
                  I'm going to get the cat and muffler removed from the nismo exhaust and just have the resonator. The downpipe is huge!
                  Doesn't make sense why I'd even have a cat anyways. No air care here
                  Just give it a couple hundred kilometers. It'll shoot you right in the wallet.

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                  • #10
                    Upgrading the stock MAF's will play a big part on getting you HP numbers up. I had very similar mods as you and made 330whp, then i upgraded my MAF's to the Z32 and made another 30whp with tune

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