DaveFJ
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| posted on 12/8/03 at 11:11 AM |
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EFi or Carbs - opinions wanted
I am now rebuilding my refurbished 2.0l pinto. It came out of an EFi car so I have the full fuel injection system/manifold.
I would like some opinions on whether to keep the injection system and modify the manifold to fit under my bonnet OR should I scrap it and and fit a
set of Webber (or Dellorto?) 45's ?
Gentlemen, the floor is yours.........
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A Badger
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 posted on 12/8/03 at 11:29 AM |
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Carbs!!!
The Pinto injection system is a bit bulky which causes it's own problems. It's quite a simplistic system by todays standards so does not
really compare to modern throttle body type injection.
Twin 40's or 45's are much less restrictive than the standard injection and easily tuned to match any changes in engine spec. Try Ebay
there's usally twin 40's for £100-£150, 45's are a bit rarer but not too much more.
Big Carbs may not be as progressive as inj even if set up properly, i.e. giving full throttle at low revs may cause a hiccup until the engine clears
itself. Since the car will be quite light (and is not built for inner city commuting) it shouldn't really effect the driving.
Andrew
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Cussed
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| posted on 12/8/03 at 12:32 PM |
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efficiencies?
Hello,
I'm having to make exactly this decision myself. At the moment I have an 2.0l injection pinto in my garage but am still some way away from
dropping it into my Luego Velocity chassis.
I was planning to use the injection system (I've saved all the wiring, ECU, etc) just because it seems simpler than converting and I was
reckoning that efficiency should be better. I'm not doing anything else to the engine and I'm just looking to get it running quickly.
From looking through this forum it seems there's a 50:50 split between people who convert to carbs and those who keep the standard injection
setup.
Does anyone who's done it want to point out the pros and cons of each setup?
Cheers
Eddie
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ChrisW
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| posted on 12/8/03 at 01:19 PM |
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I'm sticking with the standard mechanical injection system. I think most people are scared off by the wiring on injection but it's not
that difficult really. Given, the injection system is bulky but not a problem on my Viento chassis!
Chris
My gaff my rules
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zetec
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| posted on 12/8/03 at 01:35 PM |
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I would go injection if you have all the parts. I know Dax suggest keeping the Ford injection as 1) It comes free, no rolling road cost. 2) The
performance is good, easy starting, no hassle at MOT time. 3) If you don't like it then fit carbs!
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david walker
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| posted on 12/8/03 at 09:02 PM |
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You'll not get a sidedraft set-up for £150 unless you are very lucky. You need carbs, pinto manifold, filters, throttle linkage, a pump, ideally
a fuel pressure regulator and most certainly a rolling road session to make it run right. I bought my carbs & manifold off E-Bay a couple of years
ago for £170 and they are nice carbs but I reckon the whole fuelling set-up probably cost me a good £400 when I'd finished.
Unless you are really going to modify the engine it will be much happier on the original fuel injection and you'll enjoy the benefits that Zetec
lists.
[Edited on 12/8/03 by david walker]
Dave Walker, Race Engine Services - 07957 454659 or 01636 671277
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DaveFJ
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| posted on 13/8/03 at 08:20 AM |
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the flywheel is now lightweight and the head has been polished/ported, FR33 cam. standard valves however (I understand they are realtively large
anyway).
Does this change anyones opinion ?
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Stu16v
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| posted on 13/8/03 at 11:27 AM |
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If you can stretch to it, go carbs, especailly if you have been 'tinkering' with the engine. Most injection systems 'spit the dummy
out' when an engine has been modified in the breathing department (i.e. cams, head etc), and as you will possibly have to modify the inlet
manifold anyway, this will probably make matters worse. Besides, you dont get that luvverly induction roar with the standard EFI.... 
Dont just build it.....make it!
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pbura
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| posted on 13/8/03 at 11:58 AM |
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Just one more thing to muddy the decision: 
Are reprogrammed ECUs available for the Pinto? I can get one for my 13B for US$220 (about £160). Various setups are available depending on degree of
porting. Seems much simpler than sorting out carbs, and in my case preserves the original smog controls as needed by local law.
If I had as much money as I could spend, however, I'd go for some splendid sidedrafts such as Mr. Walker's.
Pete B.
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DaveFJ
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| posted on 13/8/03 at 12:33 PM |
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Ok so I am now thinking along the lines of twin 45's...
so Dellorto's or Webbers ?
and what about a decent ECU - any suggestions ?
Cheers
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Stu16v
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| posted on 13/8/03 at 10:12 PM |
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Dellortos seem to be slightly more preferable for road use. Dont concern yourself with fancy ignition ECU's, just get a dizzy with points in
(for simplicity) or an electronic ign only setup off a late Cortina/early Sierra.
Dont just build it.....make it!
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andyps
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| posted on 14/8/03 at 06:11 PM |
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Weber 40 DCOE
There is a set of Weber 40DCOE's on eBay at the moment for a 1700x-flow, link
here
No connection, just saw them.
Andy
An expert is someone who knows more and more about less and less
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