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KA24Tech · Jun 21st, 2004, 02:12 PM

Well the 370 cc should work just fine at between 45-50 psi. Which will give them about a 10 psi increase which translates to a new flow rate of approx. 475 cc. This will cut the duty cycle percentage and should safely supply the engine needs at 12 psi of boost. I would still be weary of sustained boost in the 12 area because of the very high cylinder pressure and stock internal KA (head gaskets, carbon hotspots, etc.) unless you run a race gas blend to raise the octance. Just my thoughts...

Think of the regulator like a electronic resistor, which to measure the supply you need to be forward of it to read the force (pressure) correctly. You should place the gauge as close to if not on the fuel rail to have the most accurate measurement of the supplied injector pressure when adjusting the regulator. On the other side of the regulator, you are just reading the residual pressure (resistance) in the return line back to the tank. Sorry Carl...

Troy

Jun 21st, 2004, 02:12 PM	#9 (permalink)
KA24Tech Biru O' Kudasai Join Date: Feb 2004 Location: Golden CO Posts: 1,426	Well the 370 cc should work just fine at between 45-50 psi. Which will give them about a 10 psi increase which translates to a new flow rate of approx. 475 cc. This will cut the duty cycle percentage and should safely supply the engine needs at 12 psi of boost. I would still be weary of sustained boost in the 12 area because of the very high cylinder pressure and stock internal KA (head gaskets, carbon hotspots, etc.) unless you run a race gas blend to raise the octance. Just my thoughts... Think of the regulator like a electronic resistor, which to measure the supply you need to be forward of it to read the force (pressure) correctly. You should place the gauge as close to if not on the fuel rail to have the most accurate measurement of the supplied injector pressure when adjusting the regulator. On the other side of the regulator, you are just reading the residual pressure (resistance) in the return line back to the tank. Sorry Carl... Troy __________________ SHIFT_Happiness 1992 S13 240SX SE Fastback KA24DE 5 spd - Type X Aero & Seibon Carbon Hood & Hatch -soon GT28RS 1993 U13 Altima SE KA24DET 5 spd w/ Nismo LSD - A high hp FWD can be fun (GT30R Turbo inside) 1990 Z32 300ZX VG30DETT 5 spd - 600HP & Very Civilized (working on twin GT28RS turbos) Still trying to import a 1988 R31 Skyline GTS-R w/ RB20DET-R - only 800 produced (legal under show/display regs)