Technical help Q & A Got A technical problem with you car? Keep it in here where the techies hang out and we will try to solve it for you!!

Twin 40's on My Zetec Help

Thread Tools
 
Search this Thread
 
Old Apr 26, 2007 | 09:15 AM
  #1  
Scott-rs2k's Avatar
Scott-rs2k
Thread Starter
Too many posts.. I need a life!!
 
Joined: Aug 2003
Posts: 640
Likes: 0
From: Bucks
Default Twin 40's on My Zetec Help

I have a 130ps zetec and I am just wondering about the current setup

My current fuel pump (as standard) fuel injection pump feeding that is likely to be throwing fuel at the injector rail at a pressure of 20 – 30 psi (it needs to be that high to allow it to be ‘injected’ instead of ‘dribbled’)

Ripping the fuel injection off and replacing it with the carbs/Webbers/twin 40’s means you i have an injection fuel delivery system feeding a non injection carb system … and that’s a slight problem in my mind.

Carbs only need a fuel pressure of around 3.5 psi as the fuel is basically dropped into the front part of the carb and then sucked into the engine by the choke & venture mechanisms within the carb body.

Thoughts been ?

I believe the standard fuel pump will fire to much what can I do to control the amount of fuel in psi coming into it then ? If you dispense of the regulator the carbs will be flooded in a matter of milliseconds which will both flood the engine and also p1ss fuel out of the carbs and dump it onto your lovely hot engine …

Any help and suggestions, sorry for the poorly described content
Reply
Old Apr 26, 2007 | 02:24 PM
  #2  
Scott-rs2k's Avatar
Scott-rs2k
Thread Starter
Too many posts.. I need a life!!
 
Joined: Aug 2003
Posts: 640
Likes: 0
From: Bucks
Default

ive contacted burtons regarding the efi to carb fuel regualtor but the psi is still to high at 5psi

so theres an adjuster that gives 1 to 5 psi as well so this is 2 devices

it may look a bit "busy" under the bonnet but wondering if this would work ?

sound about right ?
Reply
Old Apr 26, 2007 | 05:14 PM
  #3  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

Don't forget you are feeding two carbs, not one, why not get a filter regulator and feed this direct from the pump supply pipe ?
tabetha
Reply
Old Apr 26, 2007 | 06:09 PM
  #4  
ian sibbert's Avatar
ian sibbert
Advanced PassionFord User
20 Year Member
 
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
Default

just buy a facet redtop fuel pump....filter king and regulator...job done...
Reply
Old Apr 27, 2007 | 06:37 AM
  #5  
Scott-rs2k's Avatar
Scott-rs2k
Thread Starter
Too many posts.. I need a life!!
 
Joined: Aug 2003
Posts: 640
Likes: 0
From: Bucks
Default

Originally Posted by ian sibbert
just buy a facet redtop fuel pump....filter king and regulator...job done...
had thought that

how would i go about connecting the top of the efi fuel pump pipes (red and white) to the facet fuel pump ?
Reply
Old Apr 27, 2007 | 06:44 AM
  #6  
ian sibbert's Avatar
ian sibbert
Advanced PassionFord User
20 Year Member
 
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
Default

Sorry I assumed you were running new pipes from the tank...

You only need a suction pipe from the tank, is the existing pump on the car internal or external fuel pump ?
Reply
Old Apr 27, 2007 | 07:09 AM
  #7  
Scott-rs2k's Avatar
Scott-rs2k
Thread Starter
Too many posts.. I need a life!!
 
Joined: Aug 2003
Posts: 640
Likes: 0
From: Bucks
Default

Originally Posted by ian sibbert
Sorry I assumed you were running new pipes from the tank...

You only need a suction pipe from the tank, is the existing pump on the car internal or external fuel pump ?
the existing pump is in the fuel tank

have heard run a mk5a esc hcs fuel tank and use external face t pump etc
Reply
Old Apr 27, 2007 | 08:12 AM
  #8  
ian sibbert's Avatar
ian sibbert
Advanced PassionFord User
20 Year Member
 
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
Default

If you can get a tank that has a stub at the bottom which gravity feeds to the external fuel pump, i'd adapt off that to some normal braided or plastic fuel pipe, run this to the facet pump then under the car to the filter king/regulator then onto the carbs...

It's a really easy install as you only have the one pipe to run, the carbs dont need a tank return pipe..
Reply
Old Nov 26, 2007 | 09:21 AM
  #9  
mappindude's Avatar
mappindude
15000
 
Joined: Nov 2007
Posts: 38
Likes: 0
From: England
Default

I would stick to the two regulators personally.
You never know after running it with carbs you might just want to go throttle bodies afterwards.
you need a metro turbo regulator which drops the pressure down to about 9psi then a normal regulator to drop it further down to about 3psi.
I use Eurocarb to buy my stuff from.
Reply
Old Nov 28, 2007 | 06:56 PM
  #10  
Wardy257's Avatar
Wardy257
Too many posts.. I need a life!!
 
Joined: Aug 2006
Posts: 818
Likes: 1
From: Lisbon
Default

IF you car is newer than 1993 it will fail the MOT with carbs. Go for throttle bodies or use the Rover Turbo inlet for the sam epower results.
Reply
Old Dec 1, 2007 | 02:40 PM
  #11  
mappindude's Avatar
mappindude
15000
 
Joined: Nov 2007
Posts: 38
Likes: 0
From: England
Default

what ign setup you gonna use with this?

As for mot wardy257 it could pass an mot if he puts a cat on ,but he would have to remove it once he got it mot,ed
Reply
Old Dec 1, 2007 | 05:06 PM
  #12  
Wardy257's Avatar
Wardy257
Too many posts.. I need a life!!
 
Joined: Aug 2006
Posts: 818
Likes: 1
From: Lisbon
Default

Just having a cat wont help, the emissions will be too high even with a proper mapped ignition.
Reply
Old Dec 1, 2007 | 07:25 PM
  #13  
GAZ345's Avatar
GAZ345
PassionFord Regular
 
Joined: Aug 2005
Posts: 359
Likes: 1
From: scotland
Default

i used to run a pug mi years ago with this type of regulator on it

adjust to what you want & the rest of the fuel returns to the tank.never had any problems with it at all.
http://www.fuelsystem.co.uk/regulators.htm
Reply
Old Dec 15, 2007 | 07:53 AM
  #14  
mappindude's Avatar
mappindude
15000
 
Joined: Nov 2007
Posts: 38
Likes: 0
From: England
Default

What car is this in btw?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mk3ste
Restorations, Rebuilds & Projects.
19
Oct 17, 2021 10:09 AM
arkeye
Ford Focus ST
1
Feb 20, 2016 01:22 PM
sridgett
General Car Related Discussion.
2
Oct 1, 2015 07:30 PM
XR4
Ford XR Range
0
Oct 1, 2015 12:46 PM
Steve Escos
Ford RS Turbo Parts for Sale
0
Oct 1, 2015 06:57 AM




All times are GMT. The time now is 01:40 AM.