34 ict weber .....wots the score

Discussion in 'Mech Tech' started by johnnysensi, Mar 9, 2014.

  1. Fitted into my bay now ......had no guide ......heres what i done ...

    Fitted manifold n carbs n linkage .....all set up so both carbs open at same time....fitted inline fuel filter....line to ....fuel pump.....fuel pump line out with T connection feeding both carbs......vacum pipes on carbs blocked with tube n bolt...accelcable fitted,noticed my accel cable tube holder wont pop in ...will this matter ?......gona use punnets guide to sync em up from jk forum...is that fitting done ?....cheers gurus...any info welcome esp a weber breakdown of 34ict...now i got these from eurocarb....are they jetted correctly ...as i heard diff on this. From forum
    To forum...person to person .....cheers
     
  2. Hi Johnny. You sound to have the basic installation ok. If you use 'Punnets' setting up guide you won't go far wrong.
    However Eurocarb don't supply their carbs ready jetted for a 1600 despite their claimes in their adverts. You carbs will come with 52 idles, 130 mains, 160 airs and F78 emulsion tubes. With this set up your bus will run like a sack of poo.
    As a minimum you will need to change the idles and mains. I use 55 idles and 140 mains in my 1600 bus. At the moment I have left the airs and emulsion tubes as supplied. My bus now runs well but there may still be more to come by changing the emulsions to something like an F6. I'll do a bit more experimenting in the summer when I can be bothered to take the carbs off again. So for starters I would recommend that you go for the 55 idles and 140 mains. That will get you going for starters.
    Unfortunately you will have to take your carbs off again to change the jets.
    The idles are on the side beside the acc pump. Make sure you undo the small grub screw on the side of the idle jet holder. Then you can unscrew the holder and pull out the jet. The main jet you will find screwed into the carb at the bottom of the float chamber. If you Google Weber ICT you will find an exploded diagram of the carbs so you can identify all the bits.
    I hope this helps you a bit.
     
    johnnysensi, paradox and vanorak like this.
  3. Zed

    Zed Gradually getting grumpier

    Do the emulsion tubes as DeeJay says change to f6. This will give you the biggest improvement of the lot.
     
  4. Is it f6's for type 4 engines too?
     
  5. Zed

    Zed Gradually getting grumpier

    You got me there, I don't know. I'd guess yes.
     
  6. If you pm me your email I can send you the ICT section of the Weber Tech book.
     
  7. bugger .....carbs out again then....ill order the bits...thanks people
     
  8. Just been on the eurocarb site....it does say jetted to suit a vw 1600....is this another lie....
     
  9. Yes. It's a lie. Eurocarb sent out the carbs still fitted with factory jetting which is for single use on a Bedford van.
     
  10. Bar stewards
     
  11. 55 idle jets....150 main jet...170air correctors ....f6 emulsion...found this on vzi ......says perfect for standard twinport
     
  12. Got me bits written down......could i not just buy jet tool and rejett.myself?---i remember at college once a dag ford guy showed me something but student beer was so cheap,i cant remember...sure he was rejetting a weber
     
  13. Dont work out cheaper tho....ill just buy the bits and save myself,,,,,but i love buying tools....
     
  14. You may find 150 mains will be a bit on the rich side. Punnet, in his guide, recommends 135 and Eurocarb recommended that I should try 135 or 140. I went with the 140 mains with 160 air and my bus is running fine.
    However the 170 airs may offset the extra richness of the 150's
    It would be good if you could post back on here how you get on with 55, 150, 170 and F6.
    Hopefully your bus will run great on these.
     
  15. mikedjames

    mikedjames Supporter

    Buy a bag of different sized jets in the right range and an Air Fuel Ratio Meter and learn how to change jets. Learn the rich burble the lean bark and the omgwtf bang tinkle EMPI silencer blowup backfire.
    Life is a lot easier with the right numbers written on the jets instead of drilling them all out to 200 and forgetting.

    Or find a rolling road and get set up by somebody who is less likely to be learning.
     

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