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    Thread: Weber 32/36 question about install

    1. Member 90Foxbox's Avatar
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      03-22-2012 11:51 PM #1


      What goes to the gold fitting right above the pink vacuum hose?

    2. Member sw5's Avatar
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      03-23-2012 08:45 AM #2
      Distributor vacuum advance canister if you use port vacuum. Nothing if not, just plug it.

    3. Member 90Foxbox's Avatar
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      03-24-2012 01:10 PM #3
      Is this the proper vacuum line? It's the only vacuum line I could find by the distributor. When I plugged it in the car seemed to try and run better.



      I'm having issues getting it to stay running with this new carb. It keeps backfiring and spitting fuel and flames up out of the carb. I'm thinking I'll have to fiddle with the distributor to get it to stop, any thoughts?

    4. Member sw5's Avatar
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      03-24-2012 08:26 PM #4
      Yup, that's the line.

    5. Member sprstu's Avatar
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      03-24-2012 10:51 PM #5
      Im having a hell of a time getting the same exact carb to run properly on mine, too. The idle wanders all over and it runs rich all the time.

      Are you using the stock jets?

    6. Member 90Foxbox's Avatar
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      03-25-2012 12:04 AM #6
      Quote Originally Posted by sprstu View Post
      Im having a hell of a time getting the same exact carb to run properly on mine, too. The idle wanders all over and it runs rich all the time.

      Are you using the stock jets?
      Yeah the carb is completely stock, I just got in from a 4-5 hour session of trying to get it to run and I can't .

      It'll fire and then you can keep it alive with throttle but it won't idle on it's own. It sometimes revs on it's own as well.

      Could you PLEASE post some pics of your carb/engine bay. I'd like to compare how you have yours wired to mine.

    7. Member sprstu's Avatar
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      03-25-2012 07:50 PM #7
      Ill try to get some pics later this week, the car isnt easy for me to access unfortunately. I was reading through some threads on here and have found this stock carb does not have the proper jets in it for a MK1. I dont know what Jets are in it from the factory or what jets are needed for a MK1 but the stocks jets do not work well here.

      I can get mine to idle really well but with ANY throttle at all it just dies. I cant confirm that it is running really rich, however, it just smells rich and wont rev.


      What part are you having a hard time getting wired?

    8. Member 90Foxbox's Avatar
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      03-26-2012 05:45 PM #8
      I just wanted to make sure I had everything in the proper places. I found a rather large vacuum and fuel leak on mine so hopefully I can fix those and get mine running soon. I could get mine to stay running with throttle, it just wouldn't idle.

    9. Member sprstu's Avatar
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      03-27-2012 02:06 AM #9
      well, the only vacuum things are to the carb brake booster and from the valve cover to the carb. Some heads (the JH specifically) have a little try hose coming from just above the Number 3 cylinder that needs to be plugged up. I don't know what it does on the CIS engine but it does nothing on the carb. I have seen just a rubber cover over it (like a rubber nipple) to close it off from atmosphere.

      Otherwise you have the vacuum advance from the carb to the distributor, but thats only important if you're using the vacuum advance model. If you have the CIS-e or later CIS model distributor then there should be wiring and no vacuum line.

    10. Member sprstu's Avatar
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      03-27-2012 02:07 AM #10
      looking at your pics above it does seem like you have the vacuum line correct to the distro. Check around the backside of the head around cyl 3-4, if you see a small hole that doesn't belong anywhere try plugging it up. That should help with your backfiring issues.

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      03-31-2012 11:25 AM #11
      Here are some photos of how mine is set up - removed the coolant going through the manifold and did not notice any drivability issues, but it caused a pressure drop to heater core.

      Setup runs great!






    12. Member HagbardCeline's Avatar
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      04-05-2012 09:51 PM #12
      What jets are you running in the weber?

    13. Member oopseyesharted's Avatar
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      04-06-2012 08:49 PM #13
      I just got mine installed today, but mine was a little easier.
      Mine is a dgv. Manual choke.

      My car is also a factory carb car. So no additional FPR was needed...

      the idle is a little off, but MAN!!!!!! It really moves now!!!!

    14. Member oopseyesharted's Avatar
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      04-06-2012 08:50 PM #14
      Did you have to bend the raintray to get that filter to fit?
      Mine is not close to fitting.

    15. Member HagbardCeline's Avatar
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      04-06-2012 09:06 PM #15
      Quote Originally Posted by oopseyesharted View Post
      Did you have to bend the raintray to get that filter to fit?
      Mine is not close to fitting.
      I'm also having this issue, do you have the 2.5" filter or the 1.75" one? I have the 2.5" and it's not close to fitting without either bending the raintray or deleting it entirely

      p.s. anyone care to share their jet sizes with me? My DGEV came off a Toyota truck, doubt the jets are right for the VW.

    16. Member oopseyesharted's Avatar
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      04-06-2012 09:33 PM #16
      I have the 2.5 filter too.....not close.

      I dont know what jets are in mine. I bought it off of ebay 2 weeks ago. It came off of a rabbit.
      Sorry man

    17. Member sprstu's Avatar
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      04-08-2012 01:44 PM #17
      Also found this jetting recommendation online for a 1.7/1.8

      pri main: 135
      sec main: 140
      pri idle: 50
      sec idle: 45
      pri corr: 180
      sec corr: 170

      Also...

      "If you tune to "lean-best", go by the number of revolutions the idle jet is out from being fully seated. If that number falls within the lean-best range (can't remember what that is off-hand), You are ok. If it is over the range, then jet down, under, jet up."


      a good write-up

      http://southrnfresh.com/showthread.p...-carb&p=100849

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      04-11-2012 03:08 PM #18
      as mentioned, these carbs DO NOT COME JETTED FOR THE APPLICATION, unless you order them that way..

      you need to jet them to get them to run correctly.

      most of the time, if you can get them running, they make the exhaust manifold glow red..

      they come jetted pretty lean from the factory.

      32/36 carbs are the easiest carb to tune on the planet.. if you cant tune it in 5 mins, it has a vacuum leak, or needs jetted.

    19. Member 90Foxbox's Avatar
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      04-11-2012 07:34 PM #19
      Havent checked in on this thread in a while. Thank you for posting up those pictures!

      I've since got my car to run, it's plenty drivable and what not. I do however seem to have an issue when going WOT, the car just wants to stall. You can ease into WOT but if you go from idle to full throttle it'll stall. Any thoughts on why it would be doing that?

    20. Member sprstu's Avatar
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      04-12-2012 09:34 PM #20
      What jets are you using?

    21. Member 90Foxbox's Avatar
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      04-13-2012 12:57 AM #21
      I bought the k402 kit new so whatever it comes with out of the box.

    22. Member greyhare's Avatar
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      04-16-2012 04:57 PM #22
      Quote Originally Posted by 90Foxbox View Post
      Havent checked in on this thread in a while. Thank you for posting up those pictures!

      I've since got my car to run, it's plenty drivable and what not. I do however seem to have an issue when going WOT, the car just wants to stall. You can ease into WOT but if you go from idle to full throttle it'll stall. Any thoughts on why it would be doing that?
      Not enough accelerator pump shot.

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      12-09-2012 11:48 AM #23
      Quote Originally Posted by greyhare View Post
      Not enough accelerator pump shot.
      is this adjusted with the "pump-discharge blanking needle"? if so, what do you recommend? when i put my carb back together, i tightened this screw (needle) all the way in, should i back it out some?

    24. Member yodman's Avatar
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      01-23-2013 09:19 PM #24
      I gotta ask...

      Do any of you guys have the power chokes hooked up? The ones I see here are not. There is a wire run from the positive side on the coil to my choke, and when I plug it in, the car will not start. Unplugged, it fires right up, but needs to warm up before it idles.

      I'm also trying to figure out where any vacuum holes are on the Weber and where they hook up to?

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      01-24-2013 07:02 AM #25
      Quote Originally Posted by yodman View Post
      I gotta ask...

      Do any of you guys have the power chokes hooked up? The ones I see here are not. There is a wire run from the positive side on the coil to my choke, and when I plug it in, the car will not start. Unplugged, it fires right up, but needs to warm up before it idles.

      I'm also trying to figure out where any vacuum holes are on the Weber and where they hook up to?
      i hooked mine up. i had to run a switch for my fuel pump due to some wiring issues the truck has, so i just ran the choke off of the fuel pump relay. not sure if its correct but it works. only vacuum mine has is for the distributor. theres other brass 'ports' i guess you could call it but theyre solid and go to nothing. the manifold also has one vac port for the booster.

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      03-10-2013 11:53 AM #26
      Over the years I have installed quite a few of the Weber DGAV and DGEV 32/36 carbs on different vehicles. It is a wonderful and easily adjusted carb that covers quite a few different applications. For the water cooled VW's, I always use the early Rabbit mechanical fuel pump. It mounts right to the block and there is a lobe on the intermediate shaft to work the lever on the pump. The Weber carbs likes the volume and pressure of the VW pump and you don't have to mess with the complexity of an electrical pump and a regulator. On the electric choke model, it should be hooked up to the coil terminal that is fed from the ignition switch.

      Fred

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      03-12-2013 12:49 AM #27
      Regarding jetting/setup on a Weber 32/36: I have installed a 32/36 on my 1985 Quantum w/ 1.8L/manual trans. After some changes in the main jets, air jets, etc. the car runs exceptionally well. I would like opinions on the setup.

      Jet size: Primary :140
      Secondary:140
      Air jet primary: 180
      Air jet secondary: 210
      Emulsion tube primary:F50 (4 sets of four holes in the upper section)
      Emulsion tube secondary: F50 (was F6)
      Idle jet: 50 (has electric idle solenoid on the opposite side)
      Idle speed:850-900
      F/A mix screw: out 2-1/4 turns
      Idle speed screw: in 1 to 1-1/4 turns
      Pump jet: single

      All adjustments were done by using the "best lean" set up. and all worked out well.

      The car idles well, performs well (as well as a 1.8 can), and gets about 25 mpg on road trips (Interstate driving @ 70 mph). Before the secondary emulsion tube change (from F6 to F50), and the primary and secondary air jet changes from (160 primary to 180, and 170 secondary to 210), the car had poor performance (flat spots at all speeds, poor acceleration) but better mpg (34 hwy). It always felt as if the car was having to work too hard (always pedal to the metal) to maintain speed as well as to accelerate. I feel that the car should get about 30 mpg on road trips. What changes to the above set up should be made, to achieve that mpg? No problems other than the mpg that it is currently getting. Thanks for your input. David.

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