Can I Hook Up My FPR Like This? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SpdElemts · 02-22-2007, 02:35 PM

Hey guys i was wondering if i could set up my fuel pressure reg. like this. Please let me know if this has any drawbacks or anything.

Thanks, Jeff

redsuns3838 · 02-22-2007, 02:36 PM

so you want to leave your stock FPR in there??

SpdElemts · 02-22-2007, 02:37 PM

yea as a block off plate. It wont be hooked up at all and plugged up.

projectRDM · 02-22-2007, 03:47 PM

Seriously think about that for a second. The fuel entering the rail is pressurized, you want it to reverse flow back out the same end and into a Tfitting? How? The rail is a one way valve, the only time it will reverse flow is when the pump is turned off.

What's going to happen in your case is 50% of the fuel will enter the rail and flow to the injectors, probably not enough and lean out the engine. The other 50% will immediately go through the new regulator and return to the tank, only to be split again once when it's pumped up front again.

If you turn your water hose on, do you expect water to shoot through the faucet back into the water supply?

zenki-217 · 02-22-2007, 04:22 PM

Quote:

Originally Posted by R240NA

If you turn your water hose on, do you expect water to shoot through the faucet back into the water supply?

LMFAO!!!!!!!!!!!!!!!!!!!

grnappletree14 · 02-22-2007, 04:46 PM

i have a ? about fpr too. can i use one of the sentre i know they have a sr20de. will it be the same as the sr20det.

YoungRookie · 02-22-2007, 04:55 PM

Not to hi jack your thread but can you run the fpr line to any vaccum source? Currently the line goes to one of the ports on the back of the block but it came dissconected one time and i didnt feel any vaccum on the line so i just wanted to run it to another source.

datboibrad · 02-22-2007, 05:14 PM

Quote:

Originally Posted by YoungRookie

Not to hi jack your thread but can you run the fpr line to any vaccum source? Currently the line goes to one of the ports on the back of the block but it came dissconected one time and i didnt feel any vaccum on the line so i just wanted to run it to another source.

any source as long as its from the intake manifold. you have several to choose from.

datboibrad · 02-22-2007, 05:12 PM

well it depends on how you want to do it man. the ls1 setups work sort of like this. they fuel rail has no fpr on it. SOOO we use a corvette filter

the corvette fuel filter has a built in fpr. so what happens is when the fuel goes up in the filter then out to the rail it creates pressure. when the pressure reaches about 53 psi the diaphram opens in the filter bleeding off to the return line.

/edit. now that i look at what your wanting to do. its just not going to work at all lol.

cmcdougle · 02-23-2007, 12:06 AM

This is one of the best ones I've seen for a while. . . lol

Just put it in line; no crazy Ts or anything are necessary lol.

Ameer · 02-23-2007, 12:12 AM

true that.^^^^^^^^^^^^^

!Zar! · 02-23-2007, 02:36 AM

Why reinvent the wheel?

02-22-2007, 02:35 PM	#1
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Can I Hook Up My FPR Like This? Hey guys i was wondering if i could set up my fuel pressure reg. like this. Please let me know if this has any drawbacks or anything. Thanks, Jeff __________________ -Jeff Wolfson

02-22-2007, 02:37 PM	#3
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	yea as a block off plate. It wont be hooked up at all and plugged up. __________________ -Jeff Wolfson

02-22-2007, 04:55 PM	#7
YoungRookie Zilvia FREAK! Join Date: Mar 2003 Location: Geencastle, PA Age: 36 Posts: 1,068 Trader Rating: (3) Feedback Score: 3 reviews	Not to hi jack your thread but can you run the fpr line to any vaccum source? Currently the line goes to one of the ports on the back of the block but it came dissconected one time and i didnt feel any vaccum on the line so i just wanted to run it to another source. __________________ 92 Hatch, KA-T, T28, 12 PSI, FMIC, 3" TBE, EFI ECU, 440cc Inj, And more...

02-23-2007, 12:06 AM	#10
cmcdougle Zilvia FREAK! Join Date: May 2006 Location: Irvine, CA Posts: 1,361 Trader Rating: (0) Feedback Score: 0 reviews	This is one of the best ones I've seen for a while. . . lol Just put it in line; no crazy Ts or anything are necessary lol. __________________

02-23-2007, 02:36 AM	#12
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	Why reinvent the wheel? __________________

02-22-2007, 02:36 PM	#2
redsuns3838 Zilvia Addict Join Date: Nov 2004 Location: dog town Posts: 969 Trader Rating: (0) Feedback Score: 0 reviews	so you want to leave your stock FPR in there??

02-22-2007, 03:47 PM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Seriously think about that for a second. The fuel entering the rail is pressurized, you want it to reverse flow back out the same end and into a Tfitting? How? The rail is a one way valve, the only time it will reverse flow is when the pump is turned off. What's going to happen in your case is 50% of the fuel will enter the rail and flow to the injectors, probably not enough and lean out the engine. The other 50% will immediately go through the new regulator and return to the tank, only to be split again once when it's pumped up front again. If you turn your water hose on, do you expect water to shoot through the faucet back into the water supply?

02-22-2007, 04:46 PM	#6
grnappletree14 BANNED Join Date: Aug 2006 Location: SOCAL/chino hills (909) Posts: 1,829 Trader Rating: (6) Feedback Score: 6 reviews	i have a ? about fpr too. can i use one of the sentre i know they have a sr20de. will it be the same as the sr20det.

02-22-2007, 05:12 PM	#9
datboibrad Zilvia Addict Join Date: Aug 2005 Location: tx Posts: 636 Trader Rating: (1) Feedback Score: 1 reviews	well it depends on how you want to do it man. the ls1 setups work sort of like this. they fuel rail has no fpr on it. SOOO we use a corvette filter the corvette fuel filter has a built in fpr. so what happens is when the fuel goes up in the filter then out to the rail it creates pressure. when the pressure reaches about 53 psi the diaphram opens in the filter bleeding off to the return line. /edit. now that i look at what your wanting to do. its just not going to work at all lol.

02-23-2007, 12:12 AM	#11
Ameer Zilvia Member Join Date: Jan 2007 Location: Los Angeles,CA Age: 35 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	true that.^^^^^^^^^^^^^