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Rb25de

NISMØ

By NISMØ,
in Engines & Forced Induction

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SKiT_R31 Experienced

SKiT_R31

Posted
Posted
Ha never thought of that, Ill hit you up in a week. :) any engine bay pics? , sounds pretty sexual .

Will do after the weekend. I would have gone the Jun route, but i had a Greddy style and nothing to do with it (was initially for an S13 with an RB30DET, as the stock plenum didnt clear the bonnet, but went R32 head instead).

Mine was <$500 for the plenum and 80mm billet TB, almost half what the JUN style inc TB's cost, not sure how much performance difference there would be, but the JUN is definately more ideally suited for N/A due to the bellmouth's, longer and identical length intake runners.

I had a look on a plenum calculator, and for peak volumetric efficiency at 6000rpm i need 12" intake runners with a 2" diameter - somthing ill make at somepoint, until then the greddy should keep me happy. Mainly wanted it for the larger TB, and to get the intake away from the hotside of the engine, as well as the benefit from a much shorter intake pipe to CAI. Not sure what it will do for VE gain, as i think the runners may be too short, time will tell :blink:.

ECU is microtech LT12S, GTR loom, 550cc injectors (low duty cycle for better efficiency taking advantage of the sequential injection) fujitsumoto jasma tuned length extractors, 3" mandrel exhaust (1 centre offset mandrel glass packed perforated muffler, straight through resonator, no cat) 1.5mm gap 7 heat range plugs, upgraded coilpacks, 255, 8.3deg cams & >11.5:1 compression ratio.

once its together, should be quite angry. Had this in the works for a while, but i got distracted with yet another car (30e+t) made some big numbers with it, got bored, its done now so i'm back to my N/A ways on this old project.

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