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Showing results for tags 'high rpm'.
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have just put my engine back into my r33 list of mods below. the problem i'm having it it has nearly no vacuum at idle when it idles at 1500rpm. then for no reason, the rpm will pick up and then idle at 2200rpm. i have carried out a smoke test on the engine with no results. with the engine running, i have sprayed everywhere around anything that can potentially become a vacuum leak or cause one. e.g (injector seals, plumbing fittings under plenum, around the valve covers, the brake booster, the throttle body seal, the gasket faces) i have blocked of the hose to the brake booster to eliminate the booster, no change there. out of ideas, can anybody help me please. i have spent over $30k on this motor, i need to get it working, really getting frustrated. thanks engine: rb25det head full cnc with vg30 over sized valves 1.5mm custom grind cams from surecams (297 in, 310 ex, 10.2mm lift) hks adjustable cams gears plazmaman plenum plazmaman 75mm billet throttle body 40thou over JE customs pistons perfect circle rings brian crower rods nitrided and heat treated crank N1 oil pump davies craig electric water pump and fan controller hks 1000cc injectors on rb26 hks top feed rail hks t04z 0.82 a/r rear housing 6boost high mount manifold hks 50mm gt2 wastegate plazmaman fmic GZ motorsport vacuum pump with relief valve fuel system: bosch 040 intank 2L surge tank 2 x bosch 044 inline pumps twin lines to fuel rail aeromotive fuel reg.
