Fuel Pressure and Fuel Presure Regulator - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

95Blue240sx · 01-27-2003, 09:47 PM

i was just wondering the stock fuel pressure on a ka. and can we change the the fuel pres regulator to an adjustable one?

*Jeff240sx* · 01-27-2003, 10:02 PM

Yup. You can change the regulator. Stock pressure is 43psi, I think.
-Jeff

95Blue240sx · 01-27-2003, 10:42 PM

where is the regulator located?

*Jeff240sx* · 01-27-2003, 11:51 PM

At the end of the fuel rail.
-Jeff

95Blue240sx · 01-30-2003, 08:45 PM

what about install? ive never seen one for the KA. if i got a universal how would i hook it up.

d240t2 · 01-31-2003, 08:30 AM

If you got a universal one...you'd need to fab up an adapter to direct fuel to the new reg, that will bolt on in place of the old reg. Basically, just a hose connection on a plate, with the right holes.

Nismo sells an FPR that bolts onto the rail. JWT carries it.

Why do you think you need an adjustable FPR?

Stock FPR is 43.5 (3 bar). You have to measure that with the reference port disconnected. With the ref port connected, it'll be about 35 at idle (since the engine pulls about 8psi of vacuum, shown on vacuum gauges as 20 inches of mercury). I have never heard of a stock FPR going bad.

Dennis

01-27-2003, 09:47 PM	#1
95Blue240sx Post Whore! Join Date: Jul 2002 Location: Girls pee-pee when they see me Age: 41 Posts: 4,084 Trader Rating: (0) Rides Gallery: 95Blue240sx Feedback Score: 0 reviews	Fuel Pressure and Fuel Presure Regulator i was just wondering the stock fuel pressure on a ka. and can we change the the fuel pres regulator to an adjustable one? __________________ Please leave me feedback

01-27-2003, 10:02 PM	#2
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	Yup. You can change the regulator. Stock pressure is 43psi, I think. -Jeff __________________ Whatup?

01-27-2003, 10:42 PM	#3
95Blue240sx Post Whore! Join Date: Jul 2002 Location: Girls pee-pee when they see me Age: 41 Posts: 4,084 Trader Rating: (0) Rides Gallery: 95Blue240sx Feedback Score: 0 reviews	where is the regulator located? __________________ Please leave me feedback

01-27-2003, 11:51 PM	#4
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	At the end of the fuel rail. -Jeff __________________ Whatup?

01-30-2003, 08:45 PM	#5
95Blue240sx Post Whore! Join Date: Jul 2002 Location: Girls pee-pee when they see me Age: 41 Posts: 4,084 Trader Rating: (0) Rides Gallery: 95Blue240sx Feedback Score: 0 reviews	what about install? ive never seen one for the KA. if i got a universal how would i hook it up. __________________ Please leave me feedback

01-31-2003, 08:30 AM	#6
d240t2 Zilvia Member Join Date: Mar 2002 Location: Atlanta, GA Age: 44 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	If you got a universal one...you'd need to fab up an adapter to direct fuel to the new reg, that will bolt on in place of the old reg. Basically, just a hose connection on a plate, with the right holes. Nismo sells an FPR that bolts onto the rail. JWT carries it. Why do you think you need an adjustable FPR? Stock FPR is 43.5 (3 bar). You have to measure that with the reference port disconnected. With the ref port connected, it'll be about 35 at idle (since the engine pulls about 8psi of vacuum, shown on vacuum gauges as 20 inches of mercury). I have never heard of a stock FPR going bad. Dennis

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