Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Page 2 of 9 FirstFirst 123456 ... LastLast
    Results 36 to 70 of 311

    Thread: FAQ - Carbs

    1. 10-05-2004 11:30 PM #36
      Sorry about that, I've had some **** going on lately that forced me to give in to my brother's demands to trade him my Rabbit for his 92 GTI. Since I've done this and won't have any money in the near future because of medical bills, I will be unable to undertake any big projects.

      Oh well, maybe my brother will come by and ask the same question and you'll at him.


      Modified by sirdUbsalot at 5:03 AM 11-16-2004


    2. Banned Rabbit 16v's Avatar
      Join Date
      Feb 3rd, 2002
      Posts
      10,156
      10-16-2004 05:51 PM #37
      We will first need you to address how much money you have for this venture and what you intend to accomplish.

    3. Member
      Join Date
      Aug 1st, 2003
      Location
      Southern CA
      Posts
      835
      Vehicles
      88 Scirocco 16V and 87 Toyota Camry LE
      10-30-2004 04:26 AM #38



      Modified by a1maker at 9:28 AM 10-30-2004

    4. Member
      Join Date
      Aug 1st, 2003
      Location
      Southern CA
      Posts
      835
      Vehicles
      88 Scirocco 16V and 87 Toyota Camry LE
      10-30-2004 04:28 AM #39

    5. 11-15-2004 04:23 PM #40
      Quote, originally posted by the12for12 »
      A.IGNITION
      However, the MSD has a nice built in feature that is not found while reading the instruction manual. By reversing the magnetic leads, the MSD can give you a nice timing advance curve. You simply set the ignition at you want at idle (stock is around 10-15 degrees BTDC). As you blimp the throttle, you will find that the timing jumps to around 20-35 degrees BTDC. ,

      I found this in a search, and I thought I would comment.

      I don't know for sure what is going on inside the MSD box to cause this, but I have a guess. If my guess is right, this probably isn't the best idea for controlling advance.

      As the trigger wheel aproaches the sensor, a positive voltage is generated. As the trigger nears the point where it is closest to the sensor, the voltage rapidly drops and goes negative. (This is the event you want to capture) As the wheel moves away from the sensor, the negative voltage increases as it tends toward the steady state of about 0V.

      If you switch the wires, then you get a voltage response that goes negative, jumps positive, then settles to zero. The MSD unit is probably triggered by a negative going zero crossing. If you have it connected correctly, this corresponds to the point where the trigger wheel is closest. This part of the voltage output curve is very steep and doesn't vary much with RPM -- so the output from the detection circuit is pretty stable.

      Switching the wires means that the detection circuit will *not* trigger on the nice crisp transition because it will be a "positive going" transition (starts negative, and goes positive). Instead the circuit will trigger sometime later as the voltage settles back down to near zero. Unfortunately this part of the curve both varies with RPM and isn't very steep. The "varies with RPM" part is what makes it advance the timing. The fact that it isn't a steep curve means that slight variations (including the temperature of the electronics, external "noise", etc.) can have a significant effect on when the circuit will trigger.

      This may be a bit far afield for a carb FAQ, but I thought I would add it. Keep in mind that this is again just my guess based on my understanding of how the ignition system works. And while I'm pretty confident that switching the polarity of the wires is *not* a standard operating mode -- if it works, and it's consistent..go for it. Just be aware of potential problems (I would expect inconsistent advance values)

      -Steve


    6. Member RaceJetta's Avatar
      Join Date
      Oct 18th, 2002
      Location
      Ontario, Canada
      Posts
      808
      Vehicles
      2010 R8 V10, Jetta Racecar, '98 GTI, '11 335ix
      11-16-2004 09:52 AM #41
      First off, if you have a fixed dizzy, you can't advance the timing from the MSD. First off, measuring timing with a timing light is near impossible with an MSD because of the multi-spark to measure the static timing at idle. With a fixed dizzy, I just set my timing above 4k rpm where the multi-spark function of the MSD box doesn't occur. The multispark feature of the box is only below 3000 or something IIRC. I'm not quite sure what is being seen to make the statement that the MSD actually provides a timing curve.

    7. 12-11-2004 11:57 AM #42
      alrite folks would you please be able to give a bit of info on pierburg 2e2,s as mine is playing up. My car is a golf mk2 1.6 driver and i would like to know if a weber 32/34 dmtl is a direct replacement. Any help would be greatly appreciated. thanx in advance

    8. 02-15-2005 06:19 PM #43
      Any idea if you can feed this pump with the stock vw CisE transfer pump in the tank, or do you remove it and run the Carter solo? The carter 4070 puts out 5 Psi. Isn't that to much for Webers?
      Thanks.

    9. Member RaceJetta's Avatar
      Join Date
      Oct 18th, 2002
      Location
      Ontario, Canada
      Posts
      808
      Vehicles
      2010 R8 V10, Jetta Racecar, '98 GTI, '11 335ix
      02-15-2005 08:22 PM #44
      Yes, the Mk2 in tank transfer pump can provide enough pressure and volume to run a car on dual weber dcoe 45 or mikuni phh 44s. Been there done it. Also used a fuel pressure regulator.

    10. 06-23-2005 11:35 AM #45
      OK OK I'm stumped about the whole MSD thing!!!!!!!! I need help bad!!!!!!!!!!!, I have the MSD 6 box but how do I wire it to the distributor If somebody could give me a diagram on how to do this I would appreciate it

    11. Member RaceJetta's Avatar
      Join Date
      Oct 18th, 2002
      Location
      Ontario, Canada
      Posts
      808
      Vehicles
      2010 R8 V10, Jetta Racecar, '98 GTI, '11 335ix
      06-23-2005 11:46 AM #46
      MSD wiring diagram with OEM ignitor.


    12. 06-23-2005 12:19 PM #47
      Ignition control unit? you mean the stock computer on the golf??? I seem to be missing that..........

    13. 06-23-2005 12:21 PM #48
      I have ripped all of the wires out of the car because I have switched over to the carbs so all I have is the distributor, the MSD, the coil, and a battery,........This setup wont work? what else do I need? I am no electrician

    14. Member RaceJetta's Avatar
      Join Date
      Oct 18th, 2002
      Location
      Ontario, Canada
      Posts
      808
      Vehicles
      2010 R8 V10, Jetta Racecar, '98 GTI, '11 335ix
      06-23-2005 12:45 PM #49
      That's the ignitor. That little black thing right under the rain tray on the driver's side.

    15. Member RaceJetta's Avatar
      Join Date
      Oct 18th, 2002
      Location
      Ontario, Canada
      Posts
      808
      Vehicles
      2010 R8 V10, Jetta Racecar, '98 GTI, '11 335ix
      06-23-2005 01:06 PM #50
      That's the ignitor. That little black thing right under the rain tray on the driver's side.

      Wire the dizzy to the ignitor, then wire in the MSD between the ignitor and the coil. You need the ignitor because the MSD cannot trigger off the OEM hall sender in the dizzy. Then you will likely need a MSD 8980 timing computer to give your car some low rpm retard. Set the mechanical timing to 30-32 deg BTDC, and then the MSD 8980 will retard it 20 degrees at idle so that it starts and runs easier.

      Good luck.


    16. 06-23-2005 10:52 PM #51
      OK,.... I tried the diagram over and over, not missing a thing and still NO SPARK!!!!! If I get rid of the MSD and just wire the ignition module, coil, and distributor, will that work??? and how do I do it? This seemed like it would be simple but still no spark!!! There must be a way!

    17. 09-24-2005 01:30 AM #52
      Back to the FAQ Is there a good source to buy a Carter 4070 pump? I can't seem to find one around here. Also I need to buy parts for my DHLA's, maybe someone could post up some links for good sources for Weber and Dellorto carb parts. Thanks, lots of good info here.


      Modified by Flintstone at 9:04 PM 10-31-2005

    18. Member
      Join Date
      Sep 30th, 2003
      Location
      Stevens, Pa
      Posts
      1,994
      10-31-2005 11:14 PM #53
      I am very new to carbs. I have a 92 jetta 1.8 digifant. I want to put in a 2.0 with weber 40s that I have. so the way I understand this is that I dont use the fuel pump that is underneath the car on the passenger side. I just use the pre pump in the gas tank for fuel to the webers? Thanks for any help
      http://www.4everkustoms.com
      Jason M. Diem
      Chrome, Brass, Copper Plating. Polishing and Powdercoating. complete wheel refinishing service Check out our work
      Jdchrome@gmail.com 484.955.2111

    19. Banned Rabbit 16v's Avatar
      Join Date
      Feb 3rd, 2002
      Posts
      10,156
      11-01-2005 01:29 AM #54
      Use the pump in the tank and add a second pump. Low pressure high volume. Pierburg makes a nice unit for that application.

    20. 11-14-2005 10:51 AM #55
      Quote, originally posted by RabbitsKin »
      What do the terms DCOE and IDF mean, when talking about Webers?

      "Weber nomenclature is chaos"

      The prefix is the size of the throttle plate, a 40DCOE has a 40mm plate.

      The letters refe,r in italian, to the general type of the carburetor;
      DC means doppio corpo or double throat
      V/O means verticale/orizzontale vertical or horizontal respectively
      I (in IDA) seems to mean invertito or inverted, although there are no updraft webers, the IDA is a downdraft

      less consistent single letter designations:
      E Die-cast carburetor
      F Ford or Ferrari? application
      V Weber with a power valve
      A Water-operated automatic choke

      An example of an exception, the 40DCOE in later Alfa use is neither die-cast or equipped with an electric choke. The E indicates a trapezoid mounting bolt pattern instead of the rectangular one of the DCO.
      or
      There may be three, as well as two throats, in a Weber IDA, and there is no choke at all.

      Any number after the letters denotes a variation of the basic type, to date there are 10 known variations of the 45DCOE.


      Braden, Pat. Weber Carburetors. HPBooks, 1988


    21. Banned
      Join Date
      Jan 24th, 2004
      Posts
      5,306
      12-03-2005 01:44 PM #56
      So is there a list of what I'll need to do dual carbs on this?

      Car was 79 diesel rabbit
      Have 2L16V motor
      Have 84 GTi gas tank (Not sure if I can or cannot use it)


    22. 01-12-2006 05:43 PM #57
      you can get parts for dellortos at eurocarb uk online .

    23. Senior Member vdubspeed's Avatar
      Join Date
      Jul 18th, 2002
      Location
      Valdosta, GA
      Posts
      20,865
      Vehicles
      I quit counting.
      03-05-2006 02:40 PM #58
      I have some stuff around the shop and I'm trying to make a running vehicle out of it.

      engine - low mileage 1.7L
      carb - dellorto 40 drla downdraft.

      After reading the FAQ I gathered that I should stick to a factory ignition module/hall sensor distributor. But then I have the vacuum advance just always open. Will the advance still be okay?

      Also..are there any choke options available for the drla besides the gas pedal?

      I just ordered a carb rebuild kit and the dellorto techbook from cb peformance so I will probably answer some of these questions shortly.

      edit: 1 more question. I know the12for12 recommends having a carter p4070 electric fuel pump but will the stock mechanical fuel pump be adequate? I'm not looking for power...just to make it a driver.

      Thanks,

      Jason


      Modified by vdubspeed at 2:41 PM 3-5-2006

      Built > Bought
      58 Beetle | 79 Rabbit 20vT | 84 GTI TDI |84 GTI 16vT |12 Golf TDI ----99 QCSB Ram Cummins | 02 Burb 4x4 2500

    24. 03-07-2006 10:30 AM #59
      I have an '88 1.8 16v KR engine in my rocco, with ITB's (and CIS, i know...) and i still have the std ignition system. Hall-sensor, ignition box. I connected my vacuum advance to the inlet by 4 little plugs. I now have it running on 21 degrees timing, 44° max.
      If i set the timing to 8 or 10 degrees (as supposed) my engine wont start at cold.

      Anyone have a suggestion?


    25. Member Big CADDY's Avatar
      Join Date
      Aug 28th, 2001
      Location
      Mt. Holly Springs, PA
      Posts
      10,629
      05-03-2006 09:16 PM #60
      Nevermind.

      GOt the info myself:

      Pierce Manifold and Pierce's waterneck.

      Nice pieces. Great guys to do business with.



    26. Member vdubmike2's Avatar
      Join Date
      Sep 20th, 2004
      Location
      Janesville, WI
      Posts
      1,622
      Vehicles
      92 slc, 2010 golf
      07-10-2006 08:46 PM #61
      so i get rid of the factory pump under the passenger side then put the carter 4070 pump in its place and keep the in take transfer pump and fueling for carbs is done?
      Mike Davis Jr.

      PM me for collision repair/custom paint and body work in the Midwest

    27. 07-10-2006 08:55 PM #62
      with a regulator and filter in for good measure you're all set!

    28. Member vdubmike2's Avatar
      Join Date
      Sep 20th, 2004
      Location
      Janesville, WI
      Posts
      1,622
      Vehicles
      92 slc, 2010 golf
      07-10-2006 09:04 PM #63
      i thought it says you dont use a regulator with the carter pump that it is set up already for the right psi?
      Mike Davis Jr.

      PM me for collision repair/custom paint and body work in the Midwest

    29. 07-10-2006 11:21 PM #64
      now that you say that, I'm not sure about the carter pump in particular, but I would use a regulator regardless

    30. Member Big CADDY's Avatar
      Join Date
      Aug 28th, 2001
      Location
      Mt. Holly Springs, PA
      Posts
      10,629
      07-11-2006 10:20 PM #65
      I don't have a regulator with my carter pump setup and it runs....... still fine tuning, but it runs.


      Edited post: i have since installed a Holly regulator and valve. made no difference.


      Modified by Big CADDY at 11:42 PM 11-10-2006


    31. 07-25-2006 01:40 PM #66
      Quote, originally posted by FastLapRSII »
      Seems like a high volume/low pressure pump to me.
      Glad to hear someone has tried this!

      yes. I've done it on my GTI. Low pressure/high volume is the way to go.


    32. 09-03-2006 05:29 PM #67
      hey guys i have a 83 16v swap with 45 dcoe's the problem is this i try to sync them and either im doing it wrong or im a dumbass? one carb sux 7 and the other 10 can some 1 tell me how 2 adjust them. oh yeah im running 180corrector, f2 e tubes 165 mains.
      DCI-WEST

    33. Member Big CADDY's Avatar
      Join Date
      Aug 28th, 2001
      Location
      Mt. Holly Springs, PA
      Posts
      10,629
      09-05-2006 08:13 AM #68
      Quote, originally posted by jaydubr »
      hey guys i have a 83 16v swap with 45 dcoe's the problem is this i try to sync them and either im doing it wrong or im a dumbass? one carb sux 7 and the other 10 can some 1 tell me how 2 adjust them. oh yeah im running 180corrector, f2 e tubes 165 mains.

      Any symtoms other then different air flow readings? missing, spitting?


      My 16v swap seems to pull more air on the left (facing the car) carb so I set the main idle speed screw all the way out then use the inspection holes to line up the right carb using the sync adjustment screw then adjust the main speed screw and go from there.


    34. 09-05-2006 10:33 PM #69
      pops outta exaust at about 3500 rpm .
      DCI-WEST

    35. 10-07-2006 11:32 AM #70
      Wiring the Factory tachometer

      You can pull off the tach output signal when using an MSD 6AL, depending on the year of the car and the function of the tach, wiring the output strait into the tach's source wire will work, like on older rabbits.

      For voltage driven tachs like mine for example, 92 GTI 16v CE2 cluster, MSD PN 8920 Tach Adapter wires in easy and works great.


    Page 2 of 9 FirstFirst 123456 ... LastLast

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •