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Kim Hunt
Tinkerer
nsw
SC400 GT-L UZZ31

Posts: 53
Reg: 08-2007

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Tuesday, March 11, 2008 - 11:21 pm, by:  Kim Hunt (Lxtasi) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

ok well i have my rising rate fuel reg installed into the car but i'm pretty sure that it isn't installed correct. you are meant to install it on the return side from the rails to regulate pressure on an EFI engine right? what do i leave on the fuel reg as standard components go? the regulator to the fuel feed side of the rails? the rising rate fuel reg that is on the return side? or take aways both and just have the aftermarket rising rate fuel reg on the return line? has anyone got any pictures or some good advice to help me out? thanks
Paul Drane
DieHard
QLD
V8 Limited

Posts: 567
Reg: 07-2005

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Wednesday, March 12, 2008 - 08:22 pm, by:  Paul Drane (Paulwd) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Mine is fitted to the return line Kim. Standard reg still fitted. Because mine is adjustable had it set up while on the dyno.

Upload

Had problems with this one leaking and have changed it to a Magnafuel one.
Kim Hunt
Tinkerer
nsw
SC400 GT-L UZZ31

Posts: 54
Reg: 08-2007

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Wednesday, March 12, 2008 - 09:28 pm, by:  Kim Hunt (Lxtasi) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

so you left the standard regs? both? did you just wind the screw out if the fuel feed reg and take off the vacuum hose for the return line reg?
Brett Moloney
DieHard
Queensland
Supercharged UZZ31

Posts: 699
Reg: 07-2005

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Thursday, March 13, 2008 - 07:20 pm, by:  Brett Moloney (Lxsv8) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Kim I left the standard regulator in mine but on the dyno we found better results with the rising rate regulator removed.
Paul Drane
DieHard
QLD
V8 Limited

Posts: 568
Reg: 07-2005

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Thursday, March 13, 2008 - 08:10 pm, by:  Paul Drane (Paulwd) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Other way for me, I need the rising rate, even had to upgrade the fuel pump, too lean when boosting.
Kim Hunt
Tinkerer
nsw
SC400 GT-L UZZ31

Posts: 56
Reg: 08-2007

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Thursday, March 13, 2008 - 11:26 pm, by:  Kim Hunt (Lxtasi) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

i just dont get how you can control the fuel pressure when you have a standard reg that will only let through the max pressure that the stock car was meant to have interfearing with the after market rising rate.

this is what i have plans on doing. either go all out and get the speed flow fitting and get fittings welded onto rail where the reg and the osolator is and just run the rising rate for controlling the fuel pressure alone or just leave the reg and the osolator but disconnect the vacuum line from the standard return reg so that it is letting out max pressure and just use the rising reg on the return line further up.

but will the standard reg flow more with no vacuum line to it or will it flow more when it has boost running through it?
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 3135
Reg: 03-2006

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Thursday, March 13, 2008 - 11:28 pm, by:  Daniel Clarke (Dieseltrain) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Maybe you need to take it to a shop and get it done on a Dyno? Shouldnt be messing around with fuel delivery on boosted applications and/or trying to firgure it out. Can be a very costly experience and can result in broken internals.
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged

Posts: 214
Reg: 11-2006

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Friday, March 14, 2008 - 07:07 pm, by:  Joshua White (Joshua_88) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

hey guys, off topic a bit but does anyone know how to identify what ratio the fuel regulator is? i have a malpassi (silver top) but don't know if its 1:1 or 2:1 or what
Andrew Ferres
DieHard
WA
'90 C-F Celsior V8, '84 Soarer V8, '91 Supra V8

Posts: 779
Reg: 07-2005

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Saturday, March 15, 2008 - 11:50 am, by:  Andrew Ferres (Peewee) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

You can leave the standard one there but you must run the new reg in the return line.

The only time you'd need to remove the standard one is when you want to run less pressure than stock.

Also I would never run a RRFPR without a high pressure pump. Most pumps will not handle the pressure a RRFPR can do and your flow will suffer significantly.
Andrew Ferres
DieHard
WA
'90 C-F Celsior V8, '84 Soarer V8, '91 Supra V8

Posts: 780
Reg: 07-2005

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Saturday, March 15, 2008 - 11:50 am, by:  Andrew Ferres (Peewee) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Kim Hunt wrote on Wednesday, March 12, 2008 - 09:28 pm:

so you left the standard regs? both? did you just wind the screw out if the fuel feed reg and take off the vacuum hose for the return line reg?



The 'fuel feed reg' is a pulsation dampener, not a reg, and it needs to be left there.

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