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Thread: Dyno Comparison, 50trim and 60-1, HKS vs Brian Crower

  1. #1
    Administrator Kingtal0n's Avatar
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    Dyno Comparison, 50trim and 60-1, HKS vs Brian Crower

    I do not have the dyno PAPER, but I DO have the original VIDEO of the dyno day.
    Here is the original dyno VIDEO of the 60-1 wheel:


    Here is the screen shot from the video so you can see the dyno graph easier:
    HKS step-2 272 cams, Turbonetics 60-1 "hi fi" .48A/R Stage 3 turbine.
    20PSI:


    Now here it is again, edited for even easier viewing:




    Then, I came back to the dyno on another day, with a different compressor and cams.
    Installed T04E 50trim, same turbine & A/R, and some Brian Crower 264 step-2: 15 and 19psi:




    here they are, overlayed with eachother. Not perfect, but pretty close:



    Information:
    The idea here is to run the smallest turbo you can to meet your power goals. The 60-1 could probably flow 500+ RWHP, but on a daily driven pump gas car I just wasn't feeling it. I Only ran the 60-1 because It came from Japan bolted to this head to begin with, so I figured I would give it a shot. The results were pretty much what I expected, "late spool". I went with HKS 272's because I felt that maybe I could rev the motor out to 8,000RPM w/ that 60-1 and take advantage of its flow rate to maybe hit 440~ RWHP, but everytime I tried passing 7,000RPM on the dyno any higher than 16PSI I would get misfires, I attributed to either valve float or plug gap, and decided to just leave it alone at the time because I wanted more low end torque for this daily driver anyways and planned to try a smaller compressor later.

    So, car went for paint, and I ordered myself some BC 264's and replaced the compressor wheel and housing with a 50trim, E cover. I re-used the same turbine shaft, an "stage-3", 48 a/r, T3.

    And the gains are phenomenal, extremely fast spool and solid torque. I didn't spin it past 7k @ 19psi because as you can see the torque graphs were about to meet each other since the 50trim was out of breath.

    I could have squeezed it for 400RWHP with some minor tuning but I was tired and in a hurry to make a few passes and go home, Strictly running it for you guys here at FA for this comparison.

    In any case, big thumb up for Brian Crower, and the good old 50trim.
    For a pump gas top mount cheap turbo (I switched the wheel and housing and rebuilt the turbo at the same time for $120) It doesn't get much better than this. I can hold good, strong torque from 4,000-8,000RPM, a powerband most people with 2.0's can only dream of.
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  2. #2
    Administrator Kingtal0n's Avatar
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    Information:
    S14/S15 blacktop, Forged Internals, the HKS Cams used were non-vtc so VTC was disabled for the run (S13 intake cam gear was used)

    All runs performed on same Dyno, Same engine.

    The Green line is @ 15PSI 50trim
    The blue line is @ 19PSI 50trim
    The red line is the 60-1 @ 20PSI

    I believe the VTC kicks in (it actually turns "off", retarding the intake cam 20* ) for the BC cams at 5200 like stock, which is why torque bumps a slight bit there.

    Also note all runs done "uncorrected" and "zero smoothing" for best viewing comparisons.
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  3. #3
    Nice.

    So the green line is a redtop without vtc and other colors are with vtc??
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  4. #4
    My first top mount turbo will probably be a good ole' 50 trim. This thread gives me encouragement that I will be happy with it.

  5. #5
    i'll ask again. can you get the drf's for the run? so i can compare in winpep

  6. #6
    Sweet, I have a similar setup on a KA. Its a nice combo, I must say.

  7. #7
    Administrator Kingtal0n's Avatar
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    Ah I totally forgot to get the DRF's the dyno is around the corner ill get them all one day

    updated thread with more info about the motor as well, no its NOT a redtop.
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  8. #8
    email me all the .drf files from the dyno and i'll overlay them, host, and post them

    greaser@cox.net

    i have the winpep software here at home.
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  9. #9
    Yeah I push the 50 trim on people like a door to door salesmen.

    Ill have a dyno up shortly of a friends car running a 50 trim but with 264 step 2 cams from HKS.
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  10. #10
    Very nice comparo man....
    here is another dyno 21 lbs


    setup fwd
    calum ecu
    Stock Sr20DE JDM 9:5:1
    Brian Crower Cams Stage 2
    2.5inch down pipe with 3inch cat back
    Pullies
    Lightweight flywheel
    4 Degrees timing at idle
    SAFC2
    57trim turbo 0.48 turbine housing / Custom Log Manifold!!!!!!!!!!
    Tail 38MM WG

  11. #11
    57 trim seems to have much slower spool up then the 50 Trim. Wonder what you woud be at with a tubular.
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  12. #12
    Administrator Kingtal0n's Avatar
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    Here is another dyno of an S13 engine I tuned a while later, also forged 9:1 with a bunch of bolt ons and a 400bhp turbo (should max around 380 wheel).

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  13. #13
    That 57 trim dyno is beautiful nice and steady, just a little laggy compared to the 50 trim.

    I cant remember the last time I’ve seen a 50 trim Dyno on an SR, everything these days are with the 2871r, where clearly the 50 trim is a beauty of a turbo for a fraction of the price.

    Even better numbers on a KA :P

  14. #14
    Administrator Kingtal0n's Avatar
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    reviving this because I intend to fix the pictures, video and links herein shortly.
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  15. #15
    Senior Administrator palmerwmd's Avatar
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    Quote Originally Posted by Kingtal0n View Post
    reviving this because I intend to fix the pictures, video and links herein shortly.
    Awesome!!!
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