Alfa Romeo Forums banner


  1. Dellorto Accelerator pump adjusted successfully

    Carburetors, Fuel Injection & Air Intake
    Since I had to service the DHLA40H carbs on my '72 2000GTV again, (blocked pump jets and leaky diaphragms, again), I thought I would have a shot at adjusting the accelerator pumps this time. Below are some photos and notes which I hope will be helpful to others doing the same process...
  2. For Sale Dellorto DHLA40 carbs. Fully rebuilt, matching pair.

    Alfa Romeo Parts For Sale & Wanted
    Twin Dellorto DHLA40-G carburettors, fully rebuilt and in excellent condition. Professionally wetblasted on the Vixen Aquablast 915 (internal and external), ultrasonically cleaned and reassembled using only original Dellorto parts and Dellorto service kit. New mixture screws were installed and...
  3. For Sale Dellorto SideDrafts DHLA40H

    Alfa Romeo Parts For Sale & Wanted
    Dellorto SideDrafts 40's , good Condition. in Vegas,NV....... Shipping to all 50 US States only.. $275 for the matching pair
  4. Wanted Dellorto DHLA 45

    Alfa Romeo Parts For Sale & Wanted
    Hello, Looking for a pair of DHLA 45's, condition does not matter. Kind regards, Niels
  5. Acceleration problems, 1986 Alfa Romeo Spider

    Carburetors, Fuel Injection & Air Intake
    Hi Guys, I've recently made a lot of headway with this but I still have some issues I am going to try to be as thorough as possible here so I can get some in sight into possible problems. Car: 1986 Italian Alfa Romeo Spider S3 2.0L Veloce Carburettors: Dellorto DHLA 40H - Not original with...
  6. Carb Jetting & Setup

    Carburetors, Fuel Injection & Air Intake
    Could do with the help of some experienced Alfisti here. I have Emissions Delorto's DHLA 40's on my 2L 86 Spider S3. These are G variant carbs. Current Jetting is as follows: Idle jet: 50 (was 48) Emulsion Tube: 7482.3 Main jet: 148 I think the other jets are stock. Background - when i was...
  7. DHLA 40 Problem

    Carburetors, Fuel Injection & Air Intake
    Hi, I wonder if any technical gurus can help. I recently got some DHLA 40's for my 87 Spider S3 2000 Veloce. These carbs were off another 2000 Alfa engine so had the correct jetting. I initially installed these and noticed that the engine was bogging down and even dropping revs between 2 - 3k...
  8. Dellorto Question

    Carburetors, Fuel Injection & Air Intake
    I have a small problem with some dellorto's - number is DHLA G. The problem is that when idling, one side of the carby will spit fuel out of the throat and it slowly pools in the air box area. This ONLY occurs at idle and when revved, the fuel disappears and car runs fine. It's only just started...
  9. Alfettas not starting

    Alfetta & GTV6 (1972-1986)
    G'day, I recently renewed all the gaskests etc of my Dellorto Carbies, since putting them back on ive been having a bit of trouble getting my alfetta started. (It doesnt even ignite when turned over.) :mad: The engine has ran before, (very rough though). I have checked that the fuel is...
  10. For Sale Dellorto DHLA Carbs

    Alfa Romeo Parts For Sale & Wanted
    Pair of matched Dellorto DHLA 40 carbs perfect for upgrading your Alfa spider or giulia. Dellort DHLA 40 Carburetor on eBay (end time 22-Nov-10 16:01:21 GMT)
  11. Dellorto mixture screws loose

    Carburetors, Fuel Injection & Air Intake
    I replaced the rubber mounts and installed a support strut in an effort to get the Berlina running better.... but it's never as easy as it seems. It (this engine and carb set-up) has always popped/spit back through the carbs. It's still doing it. I have the mixture screws out 5-7 turns at which...
  12. dellorto dhla questions

    Carburetors, Fuel Injection & Air Intake
    on the dhla cold start circuit, when the lever is moved toward the front of the engine/radiator is it enriching the mixture? i have read that to start the idle mixture screw is turned 2 &1/2 turns out. the carb is marked dhla. a good place to start? thanks bill 91 164L 88 Milano 3.0 73 spider...
  13. 1975 2000 GTV Misc Questions

    GT (1963-1977)
    Hi guys, I have a 1975 Australian delivered RHD 2000 GTV with the factory twin Dellorto carb set-up. Cylinders 1 and 4 seem to be running at a pretty good mixture, yet 2 and 3 seem to be running pretty rich and foul spark plugs very quickly. Does anyone know a good combination of...
  14. Dellorto DHLA 40C vs. 40H

    Carburetors, Fuel Injection & Air Intake
    Greetings, I just tried to have the Dellorto DHLA 40H carbs in my Alfetta GTV2000L properly calibrated and this resulted in one adjusting screw being utterly destroyed; it was stuck at almost the bottommost point of the thread and it was quite impossible to move it. That carb (rear) is as good...
  15. Alfetta 2000 GTV Solex

    Alfetta & GTV6 (1972-1986)
    Hi there, First post here, wanted to test you guys straight away :D I have 1978 series 1 Alfetta GTV, 2 liter with (two double) Dell'Orto carburettors. Unfortunately the Dell'ortos are shot, but since my parts car has some two pretty good (double) Solex carburettors, I figured to use those...