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HarrisRacing

R32 Gtr Build In Usa

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reaper    41
19 hours ago, HarrisRacing said:

I'm really thinking the stroker geometry and slow top end piston speed must REALLY like more overlap than I was giving it with these small Poncam A's and straight up cam timing. I just drove it again...damn car is an ANIMAL! I can not wait to try another 1/4 mile run in it! I can only imagine what a 3.2 with V-cam would be like!!!

I shall know soon enough. No 8374 this time around though figured even the 9180 was a bit small for 3.2 and vcam so went a 6870 precision. 9282 might be the ticket once its finally released though

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HarrisRacing    188
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  • 2 minutes ago, reaper said:

    I shall know soon enough. No 8374 this time around though figured even the 9180 was a bit small for 3.2 and vcam so went a 6870 precision. 9282 might be the ticket once its finally released though

    Heck yeah. Do tell us how it works out!

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    HarrisRacing    188
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  • Been quite a while. New job...working like mad and went to Washington DC for vacation with the wife and kiddos. Also bought a C5 vette that I'm gutting and building a track car out of. And I picked up an Exige with only 5k miles on it in BRITISH RACING GREEN!

     

     

    Anyway back to the skyline...

    Getting car ready for an event down here called skyline nationals. I finally got shims and redid my valve clearances. I have all of them identical save for 1. Set the intake at .010" and exhaust at .014" (one is .015"). This should net me better compression across cylinders now. Before I had spreads from .021" to .016" on intake and .018" to .014" on exhaust. Cams still look perfect. Motor looks CLEAN.

     

    New HKS timing belt while I was at it and I bought a small CNC mill / lathe combo. First part is a prototype CAS replacement that holds GT101 sensor. It's oak wood for now but aluminum coming up soon.

     

    Also made an adaptor and installed GM electronic 90mm TB. This will be controlled by new EMU black ecu...so no more haltech.

     

    The ecu also allowed me to increase crank trigger resolution. Now I'm at 36 teeth instead of 12 (limit of haltech platinum). I also installed a high rate GT101 sensor on the crank to replace the honeywell part (which was beyond specs at high rpms).

     

    Installed Corvette electronic pedal. Machined a small plate adaptor out of like 1/8" thick aluminum plate. You could easily use a drill press and jigsaw/bansaw.

     

    Also installed new bosch knock sensors and now moving to electric fans.

     

    Last final drag runs were all 126.6-126.2 mph in low 11 range. Still on US93 octane.

     

    Also bought water/meth injection and will be trying to push this 8374 EFR .92 IWG a bit harder.

     

    Why all the changes?

    1) idle quality...with cams overlapped the factory IAC was maxxed...had to set revs too high. The GM TB will now control all air to engine.

    2) rolling antilag. Yes the emu black with electronic pedal and TB will run rolling antilag

    3) better boost control. The algorithm IS better in the program for sure.

    4) bluetooth logging and remote bluetooth gauge app (no more laptop riding in car for passes).

     

    Wiring coming up this weekend!

     

     

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    9e6a8812f506899d559aa8b9bfb5ecce.jpg

     

    15140682dbaaa722e781831f11c6c011.jpg

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    PranK    1,093

    Great update!

    I'm intrigued by the pedal change, why did you do it? What are you noticing with it installed?

    Is that a timber crank angle sensor cover??  

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    HarrisRacing    188
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  • Great update!
    I'm intrigued by the pedal change, why did you do it? What are you noticing with it installed?
    Is that a timber crank angle sensor cover??  
    Prototype sensor holder for now. Will be aluminum soon. Just testing the CNC mill.

    Have not run the car on the new ecu yet so I can't comment on the pedal yet. But the plan is better idle and drivability. Also may allow for CRUISE CONTROL with later firmware update. Allows for rolling anti-lag. Also can totally map pedal sensitivity with a knob from in car to swap responsiveness on the fly later. Also allows throttle blip on downshift.

    We shall see.

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    HarrisRacing    188
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  • Here is the TB adaptor...made it before I bought the CNC machine.

    Oh yeah forgot I put SPARCO seats in it.3c0d3150c37d5f368343c6b13d3c2387.jpg03056a390e93caf7c9fe612ee5a5213f.jpg1eb2cf993d255684dd9fe14cf633b26d.jpg4ee09c9c09fd009438e12488e442dde9.jpg454b91e27ba3ba350595e4281adb1f4a.jpg4b95308c491adf18e76345545b247ef9.jpg

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    HarrisRacing    188
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  • Getting close. Finished the conversion of pinouts etc in a spreadsheet and in the emu software. Time to get to wiring! Also should be able to change cam gear settings easier now after milling the bracket.
    6621640bf4de3c5a156cde877d6a1d06.jpgb4f549c810ff0457c433ce3ee82d2bad.jpg

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    PranK    1,093

    So clean! 

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