Fuel - Dual Weber IDF Carburetors on a 1.9 H.O! (work in progress) | Ford Escort Owners Association (FEOA)
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Fuel Dual Weber IDF Carburetors on a 1.9 H.O! (work in progress)

Discussion in '1st Gen 1981-1990 CVH' started by nineteeneightyeight, Mar 7, 2014.

  1. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Ok instead of buying this for around 400 dollars from the U.K. I have decided to make my own using 304 stainless and I am going to post my progress here, although this is not a very popular conversion so I doubt many will find it useful haha! U.K. IDF.jpg
    Last edited: Mar 25, 2017
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  2. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    P1100600.JPG I ordered 4 pieces of stainless macaroni from McMaster-Carr and they shipped right-quick! I have a spare hemi head so I can make most of it in the comfort of my own living room!
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  3. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    P1100601.JPG I am tracing the gaskets out of cardboard for the carb side, then I will draw some lines to connect them so it is one flange. I am having a difficult time sourcing a regular lower intake gasket for one of these so I may have to make a template from scratch.
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  4. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    So I got an intake gasket on order at Advance Auto, and I got my mechanical and Vacuum advance distributor too! P1100624.JPG
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  5. UnexplodedCow

    UnexplodedCow FEOA Member

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    You'll get to use the screw-on rotors, now!
  6. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Yes sir!, wait, is that a good thing?
  7. UnexplodedCow

    UnexplodedCow FEOA Member

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    It's more accurate than the slip on rotors, as two 8mm headed screw/bolts hold down the rotor on the "wing," part. The early EFI distros were the same way, with the slip on style coming later.
  8. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Oh yeah because the slip in ones kinda wiggle a bit in there TRU.
  9. nineteeneightyeight

    nineteeneightyeight FEOA Member

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  10. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Yikes! I somehow ordered my steel in a 3 inch width! I could have sworn I got the 3.5! so I will send the darn thing back! I already ordered the correct 3.5" this morning.
  11. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Customarily, we run IDFs without any sort of cold start choke assembly, mainly when the carbs are close to the head, I noticed the cast aluminum manifold they make has no pre-heat provisions, does anyone think I will have fuel condensation problems even with my carbs being just a few inches away from the intake valves? also I will expect my powerband to move up on the RPM range since I no longer have those long EFI tube runners, good thing I got the indexible cam pulley whooo!
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  12. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    OK I got the 3.5 inch in today, that was quick! much nicer finish too!
  13. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    P1100635.JPG

    Attached Files:

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  14. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Dag nabbit, I'm startin' back at it, like a jack rabbit crack addict with a bad habit. almost three years later to the date yikes! Well turns out the first set of macaroni I bought was smaller than the carb throats (oops) so I bought larger ones and reducers to go to the head flange, and I bought a synch link from the U.K. to link the throttles between the two carburetors.

    Attached Files:

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  15. JOEG5982

    JOEG5982 FEOA Member

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    I had the "store bought" manifold for the dual IDF set-up on my old ice racer.

    Mine had a choke system.

    What to watch out for? Get the throttle linkage correct. I was able to use the stock cable, but had to adapt the carbs linkage.

    Distributor: You do not need to run the vacuum, but you will have to limit the mechanical advance curve. There is too much advance built into the slot and you will detonate the motor.
  16. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Good info, was yours very driveable too or was it kinda choppy in the midrange? Also you are saying the advance is too much even if I just screwed with the initial timing right?
  17. Tnashua

    Tnashua Gearhead / hot rodder with a soft spot for Scorts

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    Is this going in a daily driver or a track car? :)
  18. nineteeneightyeight

    nineteeneightyeight FEOA Member

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    Not a daily driver but it is a street car. After I get it in and tuned I am pulling it out and putting a V6 in though haha.
  19. JOEG5982

    JOEG5982 FEOA Member

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    My car could have run on the street.

    You cannot fix the too much mechanical advance with ignition timing. You would have to set its initial so low it would hardly start.

    The plates where the little springs mount inside that distributor swivel a certain distance--that swivel is the distance of the mechanical advance. You need to reduce the swivel (or lock it out) to eliminate the ability of the distributor to build advance at high engine RPM under load as this will detonate the motor (a kind of pre-ignition).

    What we did was tig weld in the slots and filed it smooth to substantially reduce the swivel. We also
  20. JOEG5982

    JOEG5982 FEOA Member

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    we also used lighter springs to quicken movement.

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