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    Thread: FAQ - Carbs

    1. 10-07-2006 03:55 PM #71
      hey i have a golf mk 2 1.6 driver 1991! im looking at geting the most out of the engine and i have been told to go for a twin weber 45 carb! but i dont have a clue and i dont no if it will even fit! so does any one have any ideas? cheers gareth

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      10-17-2006 11:28 PM #72
      A MSD box will hook up to a magnetic pick up distributor, but what about the hall effect senders in VW distributors? Anyone able to do this without using the stock ECM or Ign. control unit?
      Audi & VW Service
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    3. 10-18-2006 12:06 AM #73
      you need the ICM to boost the signal from the hall effect, it is an amplifier.

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      10-18-2006 09:27 PM #74
      Thanks for the info. I have a 91 and am trying to eliminate the Motronic harness and ECM. Do any years have ICM's that plug directly into the distributor? I want to keep it as simple as possible.
      Audi & VW Service
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    5. 10-27-2006 01:17 AM #75
      buy this here($61): http://store.summitracing.com/...w=sku
      Quote, originally posted by the12for12 »

      We ONLY use the Carter Rotary pumps. They are High Volume (60-70 GPH) but only 4 psi. This is PERFECT for all Weber applications from a Single 32/36 DGV on a Truck, Jeep or Car to a Triple Sidedraft setup on a Road Race car making 300 HP...This pump DOES NOT and SHOULD NOT use a Pressure Regulator for any reason. That is why we use it....



      Carter 4070 Fuel pump with Mounting Bracket


    6. Member Lowjack's Avatar
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      11-12-2006 10:20 PM #76
      ABF water outlet part number
      037 121 132 j

      water outlet on front of head that gets in the way

      I've got a lovely bunch of coconuts...

    7. Member mark memory's Avatar
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      12-05-2006 08:55 PM #77
      What other carbs can be used? Some mikunis or delltoros? And what size? Should they be around the 40-45mm range and side drafts?

    8. 12-14-2006 05:20 PM #78
      Quote, originally posted by mark memory »
      What other carbs can be used? Some mikunis or delltoros? And what size? Should they be around the 40-45mm range and side drafts?

      16v's require sidedrafts, 8v's require downdrafts. typical carbs used on VW's are either Weber's or Dellorto's. a lot of people reccommend the Webers because you can still get parts for them, and I would agree with that statement. I haven't seen any carbs much bigger than the range of 40-45mm.

      I used the Dellorto's, and was really impressed with them.


    9. Member g60manny's Avatar
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      12-21-2006 11:42 AM #79
      Quote, originally posted by MoGtheMooGle »

      16v's require sidedrafts, 8v's require downdrafts. typical carbs used on VW's are either Weber's or Dellorto's. a lot of people reccommend the Webers because you can still get parts for them, and I would agree with that statement. I haven't seen any carbs much bigger than the range of 40-45mm.

      I used the Dellorto's, and was really impressed with them.


      sent im

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      12-21-2006 12:23 PM #80
      Quote, originally posted by MoGtheMooGle »

      16v's require sidedrafts, 8v's require downdrafts.

      Just a correction, 8V's can use sidedrafts just like 16V's. Downdrafts are usually used in factory carb type installations. for performance sidedrafts are the way to go when carbs are concerned on a watercooled VW motor

      '83 GTI 2L Dell 40's (crashed)
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    11. 12-21-2006 12:57 PM #81
      Quote, originally posted by 2L Bunny »

      Just a correction, 8V's can use sidedrafts just like 16V's. Downdrafts are usually used in factory carb type installations. for performance sidedrafts are the way to go when carbs are concerned on a watercooled VW motor

      for an 8v to use a sidedraft setup, wouldn't you be talking about a x-flow motor where the intake is on the front and the exhaust is on the back? otherwise, if you were mounting carbs on a rear-mounted intake setup, you would have to fab up a manifold so that the carbs would be laying flat.

      if the sidedraft carbs aren't sitting level, the fuel would flow down the venturis incorrectly.


    12. 12-21-2006 05:26 PM #82
      Many manifolds exist for counterflow 8v heads and have been used for years. Also, sidedrafts can function properly at a maximum angle of 7 degrees above horizontal.

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      12-22-2006 01:16 AM #83
      Quote, originally posted by Mk2enthusiast »
      Many manifolds exist for counterflow 8v heads and have been used for years. Also, sidedrafts can function properly at a maximum angle of 7 degrees above horizontal.

      Yup, I've got a set of Dellorto sidedrafts on my Race rabbit with a counterflow 8V. If you're ever up in Corvallis you're welcome to take a look.

      '83 GTI 2L Dell 40's (crashed)
      '86 Cabby ABA/SDS - Bitch Basket
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    14. 01-17-2007 06:58 PM #84
      You can get parts for the dellortos from the factory in italy if you are prepared to pay some money.

    15. 01-22-2007 05:58 PM #85
      when you guys say that you keep the intank pump as well are you:
      1- using only the oem intank pump?
      2- Using the carter pump and the intank (wired up and pumping)
      3- Using the carter pump only and just leavign the intank pump in the tank and using it as a pickup only for the carter?

      Also on aside note about msd, i have a 6al box, can i either
      1- use my factory digifant dist. with the icm as pictured in this thread
      2- use and older vacuum advance distributer and wire it straight up to the msd box?

      thanks Andy


    16. 01-22-2007 07:09 PM #86
      Quote, originally posted by Red Robertson »
      when you guys say that you keep the intank pump as well are you:
      1- using only the oem intank pump?
      2- Using the carter pump and the intank (wired up and pumping)
      3- Using the carter pump only and just leavign the intank pump in the tank and using it as a pickup only for the carter?

      Also on aside note about msd, i have a 6al box, can i either
      1- use my factory digifant dist. with the icm as pictured in this thread
      2- use and older vacuum advance distributer and wire it straight up to the msd box?

      thanks Andy


      2/3 are the same but people have done all those fuel configurations with success (in conjunction with a regulator).

      If using the stock distributor, the icm only amplifies the signal from the hall effect, allowing a timing comupter (e.g. MSD PN 8980) to deliver an advance curve.


    17. 01-22-2007 07:47 PM #87
      Quote, originally posted by Mk2enthusiast »

      If using the stock distributor, the icm only amplifies the signal from the hall effect, allowing a timing comupter (e.g. MSD PN 8980) to deliver an advance curve.

      do you think the 8980 would be the best bet? i liked the idea of the adjustable timing controller pn 8680 (knob on the dash) but does it deliver a curve as well or just a straight adjustment?

      would the programable timing controller (pn 8981) be of any benifit over the fixed curve?

      but would a vacuum advance dist. provide an equivlant curve?


    18. Member der hare's Avatar
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      01-27-2007 12:54 AM #88
      What throttle cable is used when running dcoe on a counterflow 8v?
      I'm guessing stock carbuerated throttle cable?

      Anyone have a good source for the metal air cleaners for a dcoe setup?

      Rando
      DCIVW

      derhare

    19. 01-28-2007 07:41 PM #89
      Quote, originally posted by der hare »
      What throttle cable is used when running dcoe on a counterflow 8v?
      I'm guessing stock carbuerated throttle cable?

      Anyone have a good source for the metal air cleaners for a dcoe setup?

      K&N has them listed on their website


    20. Member vdub4life_89's Avatar
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      01-29-2007 09:06 PM #90
      WOW...good info.....well im about to jump feet 1st into the carb world.....i have put a 8v together with a set of solex carbs what would i need to know if i pulled my stock 83 rabbit motor and put this built 8v in??? do i need diff. fuel pump....ect.??? im me please if you have the time and thanks agian guys for all the info
      Luke

    21. 01-30-2007 12:09 AM #91
      Quote, originally posted by Red Robertson »
      do you think the 8980 would be the best bet? i liked the idea of the adjustable timing controller pn 8680 (knob on the dash) but does it deliver a curve as well or just a straight adjustment?

      would the programable timing controller (pn 8981) be of any benifit over the fixed curve?

      but would a vacuum advance dist. provide an equivlant curve?

      All the MSD boxes are fairly equivilent, adjustablity within 20 degrees of your mechanically set full advance. The programmable (8981) merely allows adjustment in the slope of advance and initial timing within, again, 20 degrees of your mechanical set.

      Digging around on here, the net, or in a Bentley you should find the curve of an OEM vaccum advance or mechanical advance distributor. I know people have used one from a Saab as well.

      If you're serious about dialing in your own ignition curve, the best route would be a distributorless ignition system like Electromotive for example.

      Based on this and your budget you should be able to settle on something


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      02-13-2007 09:22 PM #92
      So much great info my head is spinning, trying to read as much as possible and have as few questions as possible. Now I'm in need of beer and it's raining ice outside.


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      02-25-2007 01:54 PM #93
      Ok, question.
      It says the carter feul pump needs no fuel pressure regulator but then it suggests one? Which is it, no fpr or with fpr?

    24. 02-25-2007 01:58 PM #94
      Quote, originally posted by OnTheRunDCI »
      Ok, question.
      It says the carter feul pump needs no fuel pressure regulator but then it suggests one? Which is it, no fpr or with fpr?

      I would suggest one, people say its not needed because the max psi rating of the carter pump should not hurt most carbs, but if yould always like constant Fuel pressure, id get a regulator


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      02-25-2007 02:40 PM #95
      Thanks, that's what I thought. Just something to make it work bettah.

    26. Member lehr leistung's Avatar
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      04-30-2007 09:12 PM #96
      i recently put a holley 1-4 reg set to 3.5 on mine, i was getting too much fuel in the bowls with just the carter...
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    27. Member VWCR8ZY's Avatar
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      05-14-2007 07:26 PM #97
      I am not running a regulator with my set-up, but will be adding one to see if it works.
      btw: 1.8 12.5 comp, 270cam, holley 350 with #57 jets, carter pump.
      I will update and let you know if anything gets better or worse.

    28. Member PNW_Dubbin_Ain't_Easy's Avatar
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      05-24-2007 12:13 AM #98
      ok guys help me out. Im runnin and 8v with a 2 barrol down draft weber. I have everything hooked up but the throttle cable can i see some pics of how you guys have hooked yours up? also anyone want a wiring question that is killin me>? thanks for your time

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      05-24-2007 12:01 PM #99
      thought of another question... Where does the wire on the elec choke goto?? the one on the front of the carb?

    30. Member vee_dubb_gti's Avatar
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      05-25-2007 02:15 AM #100
      the wire goes to 12v key on. (off the coil) if you wnat to see a pic. look in my sig. the one with the webber for sale. that should have a pic of my old one installed.i know it sounds getto, but i used some big nuts as spacers. if you wnat some better pics, let my know.
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      05-25-2007 11:44 AM #101
      ya if you could post another pic or 2 of the set up that would be great and thanks for the choke question. now if I could get the damn thing to turn over i'd throw a party!!!

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      06-12-2007 11:03 AM #102
      Quote, originally posted by SilverSLine »
      Thanks for the info. I have a 91 and am trying to eliminate the Motronic harness and ECM. Do any years have ICM's that plug directly into the distributor? I want to keep it as simple as possible.

      any answers?


    33. Member Cynical 1's Avatar
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      06-13-2007 07:21 PM #103
      my 81 rocco has a direct-to-distributor icm. may try that model.

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      07-03-2007 02:40 PM #104
      Running a 2L 16V with dual weber 45's and have the carter pump. Which fuel filter should I run? I've heard of a 3 port filter than I can run the nipple on the tank that was for the return line to instead of capping off that nipple.

    35. 07-04-2007 03:21 AM #105
      what about blockin off the frigin injectors how to?

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