Dellorto dhla idle jets. 7850 Idle jet / emulsion tube for an early type Dellorto DHLA carburetor. Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile Dellorto DHLA carburetor parts. 50 (Excluding GST) Dellorto DHLA & DRLA Idle JetPlease choose jet size from drop down menu**Where available we sell genuine Dellorto jets flow tested at the factory** 8391 Long idle jet as found in an early Dellorto DHLA carburetor like used by Alfa Romeo and Lotus. sizes available are; #30,#35,#40#41,#42 My question is what should be the starting point for the idle mixture screws with these jets? How do you adjust the idle mixture and know if it's too lean or rich? Having got my car to run really sweetly now with a very steady idle, no hesitation throughout the complete rev range whilst driving and getting about 30mpg driving with restraint I am very pleased. 70 (Excluding GST) Idle Jet – Dellorto DHLA DLRA $ 8. Jan 26, 2026 · DELLORTO DHLA,DRLA IDLE JETS KIT . 57 Idle jets. 210 Air correctors. Below is a screenshot of my spreadsheet for DellOrto carbs. 54mm hole The 2 Dellorto 40 DHLA are with oem specifications in jets, emulsion tubes, venturis and etc. On this page you will find all currently available parts for the Dellorto DHLA range carburettors. Hey!I have restored the engine in a Lotus Esprit from 1983. The jets These carburettors are reconditioned to a high standard. The idle jet holders govern how much air is emulsified with the idle fuelling, which ones are you using? Try going to a richer holder. For orders that require a guaranteed quick delivery, please contact our sales staff directly by phone who can advise further on your request. Find great deals on eBay for Dellorto Dhla 40 Carb. This is pure magic they are automatically calibrated, you simply keep the idle jet above 59 up to 62 and not make the mistake of fitting numbers suited to the early DHLA or DCOE - with this simple technique you can tune anything from a 1300 to a 2000cc without really doing anything. The idle jets control the critical off-idle progression between closed throttle and the main jet circuit, it is this part throttle operation which is so important to smooth progression between closed throttle and acceleration and for part throttle driving. O ring DEL7540 49. I’ve checked all the jets, and have the following: Idle emulsion + jet: 7850. All orders under £250* will be sent by DHL 2 x IDLE JET JETS SIZE 60 FITS DELLORTO DRLA 40 DHLA 40 45 48 CARBURETTOR CARBY. Before you check out please make sure to check all the products available in our store. At some point, you will stop seeing incremental increases in richness with larger jets. These Dellorto jets have been flow tested at the factory. This jet is available from our stock in sizes: 50 52 55 In order to purchase the correct size, you need to make a choice through the Size* drop down menu just above the "Add to cart" button. DHLA/DRLA/ Idle jet. On this page you will find a short-list of jets and other calibrated parts for the Dellorto DHLA carburetors. 5 emulsion tubes so far so good. DHLA Fuel banjo – T piece DEL7661 45. (***these will also fit the DRLA carburetors but are the lower air correctors type***). 95 Your Price: $2. LOTUS TYPE CABLE. Dellorto Idle Jet Holders (Idle Air Corrector Jets) are not numbered sequentially, but totally randomly. Some older Webers used a pretty coarse Idle Mixture screw, and the final setting could be as low as ¾ to 1 ½ turn. New -never used. 96mm DEL6415 Idle jet for Dellorto DHLA and DRLA carburetors. ---idle jet numbered 57 is a jet with a 0. Genuine Dellorto jets are stamped with the “INC” diamond logo. Dellorto p/n 7644 can be used as an alternative Changed my carbs went from Dellorto DHLA40 F to DHLA 40 ( no more letters ) the jetting is from a 1750 GTV ( 105 series ). DELIVERED AS PICTURED. 2 Pump jets 45 But if you research on what should be in there you come up with… Chokes the same 33mm Main Jet 135 Main Jet Emulsion Tube 7772. the listing is for a total of 8 idle jets. 50 jet Main emulsion + jet: 7772. Carb should run good on 3 venturi and original idle holder and 10 or 11 tubes. 3 aux venturi for the emission carbs. Click HERE for the diagram of the Dellorto DHLA carburetor. 10 or 8 Main Jet Air Correction 160+ Idle Jet 45 Idle Jet Holder 7850. 0L Opel CIH (cam in head) Manta GT/E engine fitted with a pair of 48 dhla. The emission carb has different internal design, it uses the unmarked idle holder and 3 venturi. delivered in the plsastic box as pictured. This jet is available from our stock in the following sizes: 32 33 34 35 36 37 38 39 40 41 42 43 44 We've got your Dellorto Carburetors covered. That drawing will then open in a new window. Sizes range from 38-85 6413 Genuine Dellorto main custom jet box – 15 jets of any size 1486 Dellorto Idle (Pilot) Jet PHBE PHB PHBH PHBG PHBL PHF PHM PHBR PHSB VHB VHBT VHBZ VHSA VHSB VHSC Anything beyond 3 3/4 turns probably means larger idle jets would be better. 35 jet This appears At the moment the idle is perfect and wide open throttle is perfect but the all important 80-90 % of driving rpm range of 2000 rpm up to 5000 rpm is a dog cos the idle correction circuit is letting in too much air. 38mm hole. 7772. CB Performance - High Performance Racing Products, CNC Ported Cylinder Heads, Carburetor Kits, Ignition, EFI Systems, Turbo Kits, Long Block Engine Kits, Disc Brake Kits, Drop Spindles, Suspension Parts, Dune Buggy and Sand Rail Parts for Aircooled Volkswagens. This, rather important, emulsion tube is available in the They have a fixed idle air hole, so you need to make sure you have the proper emsissions idle jet holders without the air hole. Don't get caught making any assumptions about which one is the next size richer or leaner If the idle circuit is running too lean, putting larger and larger Idle Jets on a small holder may ultimately exceed the capacity of the small holder. Dellorto DHLA Emulsion Tubes Dellorto main, air, idle & pump jets also available as well as choke tubes for 40 & 45 DHLA . Shop this Dellorto DRLA/DHLA Idle Jet from Pierce Manifolds today. This is the version without an air calibration hole, only to be used with the emission control variations of the DHLA: DHLA 40 F DHLA 40 G DHLA 40 H (non turbo) DHLA40 L DHLA40 N DHLA40 R For all early DHLA40, DHLA45 and DHLA48, please use part number 7850. You can then switch between the drawing and this page here as the numbers in the drawing match the number prefixes in the part descriptions on this page here Dellorto DHLA/DRLA air corrector jets. 50 idle jet 135 main 200 air correction . The car goes well at idle and accelerating but at constant RPM it misfires. Dellorto DRLA Idle Jets, 7644 are ITALIAN MADE DELLORTO JETS, which is all ACN Carries! We do not carry Chinese reproductions (which do not flow properly!). Jetting DellOrto Carburetors Click here for my page verifying the jetting calculator for DellOrto carbs (except SHA). 350 Dellorto DHLA Float needle valve and seat 350 8809 Dellorto DHLA/DRLA/DHLB/FRD/FDZ Viton float needle valve and seat 8811. 8 Pump jets 35 Does anyone agree with the new set up? Has anyone got a set up they could advise The jets were produced following the original,unique, dell'orto's way of numbering the jet sizes. Dellorto 40/45/48 DHLA idle jets-Long type new-never used. Hi all, I’m in the process of swapping over a pair of Solex carbs for a pair of DHLA 40H carbs on a 2. DHLA / DRLA Pump weight cap screw 6mm DEL7513 49. 50 (Excluding GST) Main Jet – Dellorto DHLA DLRA $ 8. Hi, just found this forum and hope that someone may be able to help with my problem. 29 46. Other sizes may be available on special order. this will assist buyers that follow factory recommended settings. Could it be that they are too small? Is it someone who had the same problem and replaced them to larger?regards Fredrik 10317 Dellorto DHLA Lotus Turbo Jet 12358. 0L Alfa nord engine (S2 spider). The best idle mixture screw setting is about half a turn out. Near the bottom of this page are the links to the needle and needle jet info that you will need to know such as the inner diameter of the needle jet of your carb. A good deal of mystique surrounds Dellortos, spec. Shop with confidence. Dellorto Fuel banjo fibre washer – Outer DEL 7662 47. Pump jet weight DEL7525 51. Idle Jet 50 Idle Jet Holder 7850. Pump jet ball 3. NEW -NEVER USED. The main and idle jet fuel wells are connected in emission carbs and unconnected in non-emission. 7210 Dellorto Idle Jet for DRLA and DHLA Dellorto Carbs (specify size) 0 Reviews List Price: $3. Early banjo filter DEL1419. 35 jet This Dellorto DHLA Calibrated Parts. 7644 Idle jet (or progression jet) for a Dellorto DHLA carburetor. [https Idle jet holders in order of mixture Weak 5-10-9-4-1-3-6-7-2-8 Rich Only to be used with pre- emission variation DHLAs DHLA40 – no letter DHLA40 C DHLA40 E DHLA40 H turbo DHLA45 – all types DHLA48 – all types For all other variations use part number 10738 The figures in the below refer to the quantity and […] The idle jets control the critical off-idle progression between closed throttle and the main jet circuit, it is this part throttle operation which is so important to smooth progression between closed throttle and acceleration and for part throttle driving. DHLA DHLB Fuel banjo bolt DEL 7659 48. Sizes which are not available from Dellorto are manufactured exclusively for us to the same high standard. 98 Idle jet for Dellorto DHLA/DRLA Part number: 7644 Available size: 40 45-50-55-60-65-70-75-80-85-90-95-100 Please leave selected size in note during payment or send us message. £35. 250 Dellorto DHLA Float needle valve and seat Dellorto DHLA / DHLB / FZD Float needle valve – non original Dellorto DLRA Float needle valve assembly 150 7529 Dellorto DHLA/DHLB My rebuilt Elan S4 SE spec Twin Cam is fitted with Dellorto DHLA40E (the European version) carburettors. This is the version with air calibration holes for early Dellorto DHLA's of the following types: DHLA40 without suffix DHLA40 C DHLA40 E DHLA40 H Turbo All types DHLA45 All types DHLA48 For the later "emission" type DHLA carburetors, please use part number 10738. 45 Idle jet Dellorto DHLA 45 We aim to dispatch all stocked orders either same day (Monday-Friday) or by the following working day (subject to time of order). please indicate sizes required at the time of the payment within the paypal form or by sending a message thru the ebay system. new-never used. RECONDITIONED . I would like to rejet to get it into a more normal setting of ab Type 1 the first DHLA40 (no letter after) if you like the DCOE of the DHLA family, but boasts superior atomization and tuning ability to the extra research at DellortoThis carb has an idle jet (which also runs the progression and adds mixture at cruising) that is not connected to the main jet stack, the idle jet operates on its own from the Hi all, I’m in the process of swapping over a pair of Solex carbs for a pair of DHLA 40H carbs on a 2. Can anyone advise me on what jet sizes and emulsion tubes I should fit as a starting point? DELJETI1. But when engine starts, iddle is impossible to set bellow 1000 rpm, and the engine runs very strange. DHLA / DRLA Pump weight cap screw 8mm DEL9569 50. simply go to the web page below and within the search space provided on the upper left hand corner type the key word/s of the product you are looking for. calibrated and marked following the original dell'orto parameters. Orders are shipped by DHL courier service. This way, you won't have to wade through the enormous list of all parts that we have available for this series but can simply and quickly pick the jets that you need. 53mm hole ---idle jet numbered 58 is a jet with a 0. I have diagrams of DHLA's coming out of my proverbials and also how they work etc etc . Forget the 1 venturi and 5-7 tubes in my opinion. sizes supplied on the request of the buyer-2 of each type or 4 of each type or any other choice requested by the buyer. My question is about the jetting now, because I have heard , that the Alfettas --- DELLORTO DHLA CARBURETORS' THROTTLE LEVERS LINKAGE. below are a few examples; ---idle jet numbered 40 is a jet with a 0. Where available we sell genuine Dellorto jets flow tested at the factory. 3 emulsion, 0. 2 x IDLE JET JETS SIZE 45 FITS DELLORTO DRLA 40 DHLA 40 45 48 CARBURETTOR CARBY. the linkage arm is 50mm long. please indicate sizes required at the time of Dellorto DRLA Idle Jet Holder O-ring, EACH is used to replace the cracked or missing idle jet o-ring in your Dellorto DRLAs! We have a large selection of Dellorto DRLA parts, despite the fact that these carbs haven't been made for well over 20 years! This part MUST be in good shape or the idle and progression circuit won't operate properly. You also want to stick with 8, 10, or 11 emulsion tubes and a . Should you NOT see an "Add to cart" button on this page here, then please click on the "More details" button as it indicates that there are choices to be made, for example regarding sizes. 11 Emulsion tubes. Selection and tuning of Dellorto DHLA carburettors A very popular modification for RH7 owners is the fitment of twin Dellorto DHLA, these carburettors are very similar to the Weber DCOE range and not only deliver the goods but also look very good. 40 Pump jets. 7 emulsion, 1. 97 Ex Tax: £29. I have a 2. 95 Calibrated Parts (Jets & Venturi) 2 - Dellorto Jets Air Corrector – Dellorto DHLA DLRA $ 8. NOTE:Carburettors not to be rejetted. Dit artikel wordt per stuk Full Range of idle jets to suit DHLA & DRLA Dell'Orto carburettors. . Anything less than 2 turns probably means a smaller idle jet would be better. 10738 Idle jet holder, that double-acts as emulsion tube, for a later "emission type" Dellorto DHLA carburetor. On this page you will find our offerings on calibrated parts for Dellorto carburetors. The engine has been rebuilt to standard SE spec with Dellorto DHLA 40s’, 30mm chokes and standard air filter setup. My question is that all the jets, emulsion tubes, etc are exactly as per the 11 tube 3 venturi 40pump. The original size of idle jet is 40. Dellorto Jets and other Calibrated Parts. Long idle jets as used as original equipment in early Lotus and Alfa Dell’orto DHLA carbs. rzrh, 4j74a, mfgxwj, oikto, 3kkwg, qx19mc, cxljc, hxrkd, xo9t, vl2f,