| Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you. |
 |
1st December 2008, 15:36
|
#1
|
|
Saxperience Post Whore
Join Date: Mar 2008
Location: Pembrokeshire
Posts: 5,598
|
Fuel pressure regulator?!
Atfter selling my 330cc injectors, realising they were too small, i now have 480cc injectors on order from QEP.
My question is: Do i need a fuel pressure regulator??
__________________
LARGE STOCK OF PARTS / SPARES - PM ME IF ANYTHING NEEDED!
|
|
|
|
1st December 2008, 15:38
|
#2
|
|
Established Member
Join Date: Feb 2004
Location: southampton United Kingdom (England)
Posts: 1,881
Car(s): Super stripped VTS
transit camper
iveco work hor
|
you need some sort of regulator yes, as the pump will not supply a constant flow that the injectors need
__________________
Donsax
|
|
|
|
|
1st December 2008, 15:41
|
#3
|
|
Saxperience Post Whore
Join Date: Mar 2008
Location: Pembrokeshire
Posts: 5,598
|
I have a walboro 225 fuel pump, but will i also need an uprated fuel pressure regulator?
if so what rating, 3 bar? 4 bar?
any reccomendations?
__________________
LARGE STOCK OF PARTS / SPARES - PM ME IF ANYTHING NEEDED!
|
|
|
|
|
1st December 2008, 15:47
|
#4
|
|
Established Member
Join Date: Feb 2004
Location: southampton United Kingdom (England)
Posts: 1,881
Car(s): Super stripped VTS
transit camper
iveco work hor
|
as said, you WILL need a reg, the walbro will sjut flow its flow, when its on it has no restriction other than its own flow rate, which from my 200sx days i think is 7 bar. i might be wrong.
also you dont want the pump running 100% duty all the time.
as far as what pressure is needed id imagine 4bar would be fine, but im not that sure mate.
__________________
Donsax
|
|
|
|
|
The Following User Says Thank You to don55 For This Useful Post:
|
|
|
1st December 2008, 15:47
|
#5
|
|
Established Member
Join Date: Jan 2008
Posts: 1,802
|
3-bar, or 43.5psi.
You've got 480cc injectors? That's 45.7lbs/hour.
Running them at 85% duty, they should supply enough fuel for 260bhp or so 
Andy
|
|
|
|
|
The Following User Says Thank You to luthor1 For This Useful Post:
|
|
|
1st December 2008, 15:55
|
#6
|
|
Saxperience Post Whore
Join Date: Mar 2008
Location: Pembrokeshire
Posts: 5,598
|
Thanks guys, where is the regulator fitted?? As i thought mk2 saxo's have the standard regulator in the tank dont they?
And what is the best one to go for? - Sytec 4 bar??
__________________
LARGE STOCK OF PARTS / SPARES - PM ME IF ANYTHING NEEDED!
|
|
|
|
|
1st December 2008, 15:56
|
#7
|
|
Established Member
Join Date: Feb 2004
Location: southampton United Kingdom (England)
Posts: 1,881
Car(s): Super stripped VTS
transit camper
iveco work hor
|
on the end of the fuel rail isnt it ?
if not jsut get an inline one
__________________
Donsax
|
|
|
|
|
1st December 2008, 17:04
|
#8
|
|
Saxperience Post Whore
Join Date: Mar 2008
Location: Pembrokeshire
Posts: 5,598
|
Think your right there, it is the end of the rail.
Would it be better going for a fixed rated regulator, or an adjustable one?
I was thinking adjustable as when it goes for mapping they can find the best setting?
Would this one be any good?
http://www.demon-tweeks.co.uk/produc...ode=FSEMSV000P
__________________
LARGE STOCK OF PARTS / SPARES - PM ME IF ANYTHING NEEDED!
|
|
|
|
|
1st December 2008, 17:25
|
#9
|
|
Established Member
Join Date: Feb 2004
Location: southampton United Kingdom (England)
Posts: 1,881
Car(s): Super stripped VTS
transit camper
iveco work hor
|
na jsut get a 3.5 bar one
ebay
or i think any bosch one will fit, such as a VW bora 20l 20v, i was looking at one ages ago, like 2 years, so i might have details wrong.
google ? 
__________________
Donsax
|
|
|
|
|
1st December 2008, 19:06
|
#10
|
|
Frequent Poster
Join Date: Nov 2003
Location: Tayside
Posts: 893
Car(s): S/c VT!?
|
Just use the standard one in the fuel rail?
Unless either;
a) you're using a different fuel rail from standard that doesn't take the FPR
b) you've specced the injectors wrong and by raising the fuel pressure it'll give you the extra flow you need
c) moving the FPR from under the rear seats (VTR) and re-doing the fuel system
d) got money to waste
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT. The time now is 23:57.
|
Linear Mode
