Fuel press ???? NOS

88workcar · 12-13-2003, 10:08 AM

I need to get 85psi of fuel in my fuel rail. Right now I have 70psi. What is the best way to achieve this? I am going to make my system 150hp but it takes 85psi.

fiveohpatrol · 12-14-2003, 09:26 PM

Why not come play with the big boys and use a wet kit. I just plain don't trust dry kits when it comes to that much hp.

But if you insist, you just have to get the right jet in the nitrous T that has the vaccum line going to the FPR. But if that still doesn't do it, you may not have enough of a fuel pump to do it.

FYI, I switched from a dry kit to a wet, and on the same "shot" jettings, I went 3-4tenths faster.

just a thought

12-15-2003, 04:00 PM

Quote:

Originally posted by 88workcar
I need to get 85psi of fuel in my fuel rail. Right now I have 70psi. What is the best way to achieve this? I am going to make my system 150hp but it takes 85psi.

What size fuel pump is in your tank? I to run a dry 150 shot...I have a 155lph intank pump + an MSD 200gph inline pump. That assured me plenty of fuel volume as well as consistent pressure. You may be able to achieve your 85psi. with just a 190 or 255lph intank...and not have to run an additional inline pump...but I couldn't say for sure. Back when I bought my 155lph pump there really weren't many bigger fuel pumps out on the market...so when I stepped up the the 150 shot...I had to get the inline pump too.

12-16-2003, 01:10 PM

I used to run a 255 intank with a 150 shot. It was too lean. It had the fuel pressure, but the volume was not adequate.

You will either need the Walbro Gss340 high vloume 255 intank, or add a booster pump like the T-rex from Vortech.

JSFIRE79 · 12-16-2003, 11:26 PM

I run a 255Lph intank pump on 24 lbs. injectors on the same shot and run just fine....@38lbs @regulator near perfect mix.

12-13-2003, 10:08 AM	#1
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Fuel press ???? NOS I need to get 85psi of fuel in my fuel rail. Right now I have 70psi. What is the best way to achieve this? I am going to make my system 150hp but it takes 85psi. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

12-14-2003, 09:26 PM	#2
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Why not come play with the big boys and use a wet kit. I just plain don't trust dry kits when it comes to that much hp. But if you insist, you just have to get the right jet in the nitrous T that has the vaccum line going to the FPR. But if that still doesn't do it, you may not have enough of a fuel pump to do it. FYI, I switched from a dry kit to a wet, and on the same "shot" jettings, I went 3-4tenths faster. just a thought __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

12-16-2003, 11:26 PM	#5
JSFIRE79 Registered Member Join Date: Sep 2000 Location: Northridge, Ca. USA Posts: 27	I run a 255Lph intank pump on 24 lbs. injectors on the same shot and run just fine....@38lbs @regulator near perfect mix. __________________ 93GT Stock 302, 170,000 miles....GT-40Y Heads, Ported and Extrude Honed GT-40 intake, Pro-M w/Granitelli Meter , 65mm Throttle Body , Custom Crane Cam, Rockers, lifters, pushrods, Mikes Transmissions Built AOD, 3000 stall, Aluminum Driveshaft , 3.73 gears, Motorsports shorty headers, Stock axles, ZEX 125HP kit. w/Bottle warmer. 60ft. - 1.60 1/4- 11.38 MPH- 119 WWW.StarkRacing.net

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12-16-2003, 01:10 PM	#4
It's Exgmguy Guest Posts: n/a	I used to run a 255 intank with a 150 shot. It was too lean. It had the fuel pressure, but the volume was not adequate. You will either need the Walbro Gss340 high vloume 255 intank, or add a booster pump like the T-rex from Vortech.