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Thread: Weber 32/36

  1. #21
    Cunning Linguist tekenaar will become famous soon enough tekenaar's Avatar
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    Vacuum advance vs. retard connections

    Quote Originally Posted by ZmokE
    I don't understand it...
    The distributor is allready connected to the intake's vacuum. Is it enough to close the port on the carb...or should it be connected it to something else? I don't see what more should need vacuum beside the brakebooster, the distributor and the valvecover...
    In another thread they spoke about distributors vacuum en vacuum retard...i guess thats the same (my english isn't thát good).
    Another question...i'm waiting for the gasket/spacer...shoudl i use some gasket sealer on it..or is this not necessary?
    The #2 port in your picture is indeed the distributor vacuum advance port. This port is connected ABOVE the carb throttle plates and has NO vacuum at idle. When you open the throttle, this port is exposed inside the carb to manifold vacuum and adds to the mechanical RPM-controlled advance in the distributor. Under load, this fires the mixture earlier to produce additional power for accelleration, which is exactly what you want, understand? That's why it's called vacuum advance.

    If you already have your distributor vacuum canister hooked up, it's likely to be connected to manifold vacuum and . . . connected WRONG! It ALWAYS has vacuum while the engine is running and is actually used for RETARD! That's it for advance/retard in a nutshell.

    Use NO SEALER on carburetor gaskets!!!
    Last edited by tekenaar; 08-29-2005 at 04:36 PM.


    1960: '61 Rekord PII 1.7 3S 3.9 '69 Kadett LS 'sprint' 1.9 3A 3.18
    1970: '70 GT 1.9 4S 3.44 '72 GT 2.2SSD 5S 3.44 '72 GT 2.4FI 5S 3.44P
    1970: '73 GT 1.9FI 4S 3.44 '75 1900 1.9FI 4S 3.44
    1980: '85 Bitter SC 3.9FI 5S 3.44P
    2000: '09 Solstice GXP Coupe 2.0 SIDI VVT "Stage 2" Turbo 5S 3.73P

  2. #22
    Member ZmokE is on a distinguished road ZmokE's Avatar
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    Quote Originally Posted by tekenaar
    Use NO SEALER on carburetor gaskets!!!
    Oops..sorry...LOL
    Thanks for the clear answer...i understand it now..
    But..what to do with te small port on the intake manifold?
    Just close it?
    Ascona-B 2.0E , Ascona-B 1.9, Kadett City 1.6, Kadett City 1.2, Corsa-A 1.2, Corsa-A 1.2, Corsa-A 1.4, Vectra-C 1.6, Astra-A 1.4, Agila (ahum ), Corsa-C 1.4, GT 1.9

    Dutch GT Forum

  3. #23
    Cunning Linguist tekenaar will become famous soon enough tekenaar's Avatar
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    Vacuum port connections

    Quote Originally Posted by ZmokE
    Oops..sorry...LOL
    Thanks for the clear answer...i understand it now..
    But..what to do with the small port on the intake manifold?
    Just close it?
    One more time . . .

    Carb fitting - venturi vacuum: distributor vacuum advance

    Intake manifold fittings - manifold vacuum:

    3-port fitting: large - brake booster; small with tiny hole (metered orifice) - small valve cover port; other small - distributor vacuum retard

    2-port fitting with single small fitting below it: large - brake booster; small with tiny hole (metered orifice) - small valve cover port; manifold single small - distributor vacuum retard

    2-port fitting with single small 90° fitting on valve cover side: large - brake booster; small - distributor vacuum retard; small 90° fitting on valve cover side (metered orifice) - small valve cover port


    1960: '61 Rekord PII 1.7 3S 3.9 '69 Kadett LS 'sprint' 1.9 3A 3.18
    1970: '70 GT 1.9 4S 3.44 '72 GT 2.2SSD 5S 3.44 '72 GT 2.4FI 5S 3.44P
    1970: '73 GT 1.9FI 4S 3.44 '75 1900 1.9FI 4S 3.44
    1980: '85 Bitter SC 3.9FI 5S 3.44P
    2000: '09 Solstice GXP Coupe 2.0 SIDI VVT "Stage 2" Turbo 5S 3.73P

  4. #24
    Member ZmokE is on a distinguished road ZmokE's Avatar
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    Looking at other threads i understand now that there are distributor cannisters with two ports also. The cannsiter on my GT have only one...thats why i didn't understand the whole vacuumstory.
    So the port on the cannsiter should be connected to the manifold...the vacuum port at the carb should be closed....correct me if i'm wrong.
    Ascona-B 2.0E , Ascona-B 1.9, Kadett City 1.6, Kadett City 1.2, Corsa-A 1.2, Corsa-A 1.2, Corsa-A 1.4, Vectra-C 1.6, Astra-A 1.4, Agila (ahum ), Corsa-C 1.4, GT 1.9

    Dutch GT Forum

  5. #25
    Member guyopel is on a distinguished road guyopel's Avatar
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    No vacuum from carb. goes to dist. HTH
    Guyopel

  6. #26
    Bo Know's '69's Bo Mows is on a distinguished road Bo Mows's Avatar
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    What is the gasket set up for the Weber starting from the intake to the base of the carb. I think i've got a bad vaccum leak between the heat shield and intake or heat shield and carb. What gaskets do i need in what order? The PO didn't have the carb tight, just sitting on the intake.

    Bo
    Buy it. Build it. Drive it. The rest is easy.

  7. #27
    opel free after 26 years baz is on a distinguished road baz's Avatar
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    got to get you guys and gals to use the search engine it gets you things like
    http://opelgt.com/photos/showgallery.php/cat/539
    which should be a good start to fixing air /vac leaks
    Copyright © 2003-2010 barry williams
    All Rights Reserved

    B.O.O.B. founding member


  8. #28
    Bo Know's '69's Bo Mows is on a distinguished road Bo Mows's Avatar
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    Baz, I used that on my hose setup, but i have not found anywhere the placement of the gaskets and spacers for the mounting of the carb to intake. Really, i've looked. Maybe i just have not used the right search word combo yet.

    Bo
    Buy it. Build it. Drive it. The rest is easy.

  9. #29
    Old Opeler GTJIM will become famous soon enough GTJIM's Avatar
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    Gasket stack ...

    Manifold - paper gasket - heat shield - paper gasket - insulating spacer - paper gasket - carb.
    That is why the studs are so long!

    HTH
    GTJim
    Opel Owner since last Century!

    Copyright © 2000-2009
    J D Henry
    All Rights Reserved

  10. #30
    Bo Know's '69's Bo Mows is on a distinguished road Bo Mows's Avatar
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    Thanks here is a picture of the carb with questionable hoses. There is no charcoal canister in the car. I think the PO tried to route around it. Hoses don't fit where the diagram in earlier post say they should go.
    Last edited by Bo Mows; 10-16-2005 at 11:24 PM. Reason: add picture
    Buy it. Build it. Drive it. The rest is easy.

  11. #31
    Bo Know's '69's Bo Mows is on a distinguished road Bo Mows's Avatar
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    Here's a pic of the carb. The label saying 2 lines going to distributor are the 2 lines going to front and back of vaccum advance. So there are 3 vaccum lines here, brake booster vaccum advance and retard. This doesn't seem right to me.
    Attached Images
    Last edited by Bo Mows; 10-17-2005 at 08:52 AM.
    Buy it. Build it. Drive it. The rest is easy.

  12. #32
    Cunning Linguist tekenaar will become famous soon enough tekenaar's Avatar
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    Manifold-to-carb stacking order

    Quote Originally Posted by GTJIM
    Manifold - paper gasket - heat shield - paper gasket - insulating spacer - paper gasket - carb.
    That is why the studs are so long!

    HTH
    If you follow that stack-up, you won't have any fuel bowl percolation problems . . . even if driving in Texas summer heat!


    1960: '61 Rekord PII 1.7 3S 3.9 '69 Kadett LS 'sprint' 1.9 3A 3.18
    1970: '70 GT 1.9 4S 3.44 '72 GT 2.2SSD 5S 3.44 '72 GT 2.4FI 5S 3.44P
    1970: '73 GT 1.9FI 4S 3.44 '75 1900 1.9FI 4S 3.44
    1980: '85 Bitter SC 3.9FI 5S 3.44P
    2000: '09 Solstice GXP Coupe 2.0 SIDI VVT "Stage 2" Turbo 5S 3.73P

  13. #33
    are the DGV series carbs Bolt-on the manta 1.9 inlet?

  14. #34
    Opeler Anonymous D is on a distinguished road
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    Yes

    Yes, the Weber 32/36 DGV 5-series, 5-A series, and 33-B series
    (as well as the 32/36 DGEV and 32/36 DGAV) will bolt up to a
    1.9 Manta manifold (although you'll need to adapt the throttle
    linkage and air filter).

    Additional instructions are here:

    http://www.opelclub.com/TuneUpPart1bJune2006.pdf

  15. #35
    1000 Post Club wrench459 will become famous soon enough wrench459's Avatar
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    I don't know where to post my questions but this looked like a good spot.
    How much milling of the choke housing before ventura booster problems? (32-36 DGxV)
    I need air and lots of it under the confines of the GT hood.
    Also is the 32-36 choke housing interchangeable with the 38 DGxV?
    Last edited by wrench459; 05-04-2008 at 09:17 PM.

  16. #36
    Member gt crazy is on a distinguished road gt crazy's Avatar
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    If you want a carb that you can just put on and not worry about jetting and all that fun stuff, you need to go to OGTS. I got my from them and it works GREAT! Very great quality. I think I paid 383 for the carb all the linkage things gaskets and the chrome air filter. WORTH EVERY PENNY!
    Last edited by tekenaar; 07-17-2008 at 12:01 PM. Reason: it work great
    I can't wait to finish my 1972 Opel Gt.... So I can buy another one and start all over again!

  17. #37
    Weber Carburetor Guru bigjim5551212 is on a distinguished road
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    Quote Originally Posted by wrench459 View Post
    I don't know where to post my questions but this looked like a good spot.
    How much milling of the choke housing before ventura booster problems? (32-36 DGxV)
    I need air and lots of it under the confines of the GT hood.
    Also is the 32-36 choke housing interchangeable with the 38 DGxV?
    the answer is YES for the choke question. With regards to milling, you dont want to mill that housing. that gives more air into the carb

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