Su hs2 assembly JET ASSEMBLY. There are six separate pieces to this structure on the HS2 carburetors. The choke moves the jet on the front carb but not the rear. From Le Mans Bentleys to Straight-8 specials with a host of original equipment road car fitments, and many an aviation success, SU is the brand of champions. Illustrated drawing of the parts along with a list of part names, numbered. A new plastic float, pin, plus needle & seat assembly are already installed into a new float cover lid. (c) Unscrew the suction chamber retaining screws (3) and remove the identity tag. This fits all models with HS2 1. Remove the piston damper (1) and its washer (2), if fitted. 090 Jet. 85K subscribers Subscribe Dec 1, 2012 · Examine the jet assembly and its related parts as they came out of the bottom of the carburetor body. . Comes with all new seals, gaskets, needle and seat, jet tube assemblies, and new throttle bushings if needed. 7cm (or 1. Sep 1, 2024 · There are two similar nuts used in the jet assembly. SU carburettors can theoretically perform better than modern computer controlled fuel systems. Diagram of SU HS2 carburetor parts historically available for the classic Mini Cooper The world's Sole Manufacturer of Genuine SU Carburettors, Fuel Pumps and Spares. This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold gaskets 2 Needle & Seat sets 2 Float Spindles Various O-Rings 2 Jet Springs 2 Float Lid Gaskets 2 Alternate Products $203. To date, petrol in the UK has contained up to 5% renewable ethanol (known as E5). This video shows the assembly and adjustment of my Triumph Spitfire Mk3 twin SU HS2 carburetors. . The float chamber assembly differs from the H and the HD types both in the method of mounting and in the type of float used. Seal the transfer holes in the piston assembly with rubber plugs or Plasticine and fit the assembly to the suction chamber. HS2 is a much better carb but I would like to keep my car as original as I can. Starting with the basic principles, the manual takes you through routine servicing, dismantling, inspection, reassembly & tuning The twin 1 1/4” SU carb set-up was the choice of John Cooper as he searched for increased performance in the Mini. CSK 59 Factory-Original Service Kit for the 1¼ inch SU HS2 and 1½ SU HS4 series carburetors as fitted to a myriad of vehicles over time. It is very reliable, but it can become dirty and choked — and some parts wear out. 1inches) thick, not counting the bolts. Perfect for maintaining and optimising your vehicle’s carburettor efficiency. Following is as basic a description of what's going on that I can manage! Feb 19, 2005 · Marty, This is from the Haynes Techbook Manual on SU Carbs. SU HS2 Carburetor Assembly | Triumph Spitfire Restoration - Part 102 Steves Project Car Garage 1. Needle locking screw to suit is AUC 2057. Buy spare parts for "SU-HS2 twin carburettor and airfilter" of Mini (1959-2000). 7 The HS2 is a superior evolution to the original H1 Bugeye carburetor. White Plastic. From the bottom up, these are the jet and its feeder tube, the adjusting nut, the adjusting spring, the jet securing nut, a metal washer and the jet bearing tube. 8kg. Read on for technical advice for advice on Explanatory Diagram of a Typical H Type Carburetter. #SU750 CARBURETOR KIT SU 1-1/4" HS2 1-1/2" HS4 WITH . Please add your needle choice in the box provided before adding to the basket. Check the time this takes, which should be 3 to 5 seconds for HS2-type carburetters of 11 StoreSort by: Default Latest Name Price ^ Items: 20 50 100 All View: grid list mini Cone-shaped air filter for the SU 1. That linkage is the only means keeping the jet in place. (b) Standard suction chambers. CSK59 Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: Innocenti Regent 1500 1974 1498 cc Tags: AUD633L and AUD633R This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold gaskets 2 Needle & Seat sets 2 Float Spindles Various O-Rings 2 Jet CSK59 Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: 1968 Riley Kestrel MKII 1275 cc Tags: AUD318L en AUD318R 1968 - 1969 Riley Kestrel MKII 1275 cc Tags: AUD344L en AUD344R This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold gaskets 2 HIF Type Carburetter: Dismantling 1 (a) Thoroughly clean the outside of the carburetters. The drilled pattern at the rear side is specific for the SU HS2 and SU H2 carburettors. Morris Minor 1000. 1 ¼” SU HS2 Carburettors AUC 980 & AUD 5. Order your Triumph Spitfire Air Cleaner (Standard) Twin SU Carbs - MkIV ⛽ Low prices and fast, worldwide delivery British car experts ♚ Call ☎ 01522 568000 or ☎ 1-855-746-2767 SU Carburetor Jets. Ref: GFE9335, SIE0142. This manual also covers electric & mechanical fuel pumps as well as AED's. Inside the body of the carburettor is a piston Universal linkage kit for twin HS2 or HS4 SU carburetors. This book includes exploded images of our range of carburettors, technical specification listings for vehicles, as well as a spare parts section giving you more information on specific parts. See CSK59 for the twin carb service kit. Includes Gaskets, Needle & Seat and Jet Assembly. SHAFT SCREWS USE 370-090 SU HD6 & HD8 CARBURETORS SHAFT, THROTTLE, O/S HS2 CARBS SHAFT, THROTTLE, STD HS2 CARBS SHAFT,THROTTLE, 150 CD SPM & SPIT SHIM, NEEDLE & SEAT, 0. Mar 8, 2025 · 1 ¼” SU HS2 Carburettor AUC944. I assembled my H2 with the new seals and the choke is now smooth and easy to operate. Aug 6, 2024 · Re: SU HS2 Carburettor by steveJlloyd » Mon Aug 12, 2024 9:28 am les wrote: ↑ Wed Aug 07, 2024 9:49 am It’s relatively straight forward, attachment shows where the throttle cable goes and where the choke cable goes. In the center of the venturi is a piston with a tapered needle affixed to its bottom side. FUEL NEEDLES & JETS. Available in 4 sizes: HS2 1 2/8" = 31,75 mm (vertical flange bolt pattern, narrow suction chamber) HS4 1 4/8" = 38,10 mm (angular flange bolt pattern) HS6 1 6/8" = 44,45 mm (4 flange bolt pattern) HS8 1 8/8" = 50,80 mm (4 flange bolt pattern?) There are usually two carbs for each The fitting of a fresh type of needle may, in the odd case, call for the recentring of the jet assembly, and this matter should be checked according to Section (4). Needles may have to be changed to match your As per title I need a float bowl assy for an hs2 or hs4 SU carb, the type with the seperate float bowl, just need the lid and float really, scrap carb will do Needle and seat assembly for SU carburetor. Lots of tuning and some exploded views, but little on specifics of rebuilding. Black Fuel Jet assembly - 0. SU carburetors have a minimal number of moving parts and are easy to tune. Use this handy guide to identify what carburetor is on your classic. CSK59 Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: Mini Cooper S 1000 1964 970 cc Tags: AUD151L and AUD151R This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold gaskets 2 Needle & Seat sets 2 Float Spindles Various O-Rings 2 Jet Springs Genuine SU carburetter float chamber lid assembly complete with float, gasket, needle and seat. I want to rebuild the carburetor myself. After adjusting it several times I've decide We are the worlds sole manufacturer of SU Carburettors, Fuel Pumps and Spares. … Mar 24, 2013 · Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Carbs are fully disassembled, ultrasonically cleaned, and polished. Enhanced Filtration with High Flow Air Filter: Crafted with exquisite and detailed workmanship, our High Flow Air SU HS2 ramflo style dome air filter Fits Sprite Midget and Classic Mini models $109. Complete genuine SU master overhaul kit for single HS2 carburetors. Type H Carbs. These filters are washable and reuseable and claim to flow up to 50% more air than a traditional paper filter. 90 Nov 27, 2008 · Su Hs2 Carb Diagrams & Literature, Tuning, Maintanance Ect - posted in Problems, Questions and Technical: ok i found this mini owners workshop manual at a local carboot sale and it has loads of diagrams and info so in this post i will be showing loads of diagrams and " carb operating princaples, routine maintanace & slow running, dismantaling, re-assembly & jet centralizing, exhaust emission Order your Damper and Cap Assembly - AUC8114A ⛽ Low prices and fast, worldwide delivery British car experts ♚ Call ☎ 01522 568000 or ☎ 1-855-746-2767 Explore our HS Float Lids top automotive parts at SU Carburetters UK. Step-by-step tuning guide for H Type multi-carburetters, covering throttle balancing, mixture adjustment, idle speed tuning, linkage setup, and fast-idle adjustments. (2) Tuning—single-carburetter layout As the needle size is determined during engine development, tuning Of the carburetters is confined to correct idling setting. I saw other assemblies on the forum too b Many customers complain about cold starting challenges with their British car. Ref: MSSK9, MSSK009, SIE0052. This is a good upgrade (if you are unfamiliar). Nov 15, 2010 · Video disassembly of an SU HS2 carburetor, demonstrating damper, suction chamber, spring, air piston with tapered needle, body, choke, throttle disc (butterfly), float bowl (4 moving parts). MG Midget / Sprite - rear carb. 6" round by 1-3/4" deep, with K&N's famous million-mile warranty. Upgrade today with quality products for superior performance. Jul 23, 2018 · A fuel leak at the top nut of my 1960 MM1K HS2 SU carburetor. Comprehensive dismantling guide for HS2, HS4, and HS6 carburetters, covering suction chamber removal, jet assembly disassembly, float chamber access, and throttle spindle removal. com MGAguru. MID 1500 75 The MGA With An Attitude MGAguru. Please use our product search boxes below to find your Carburettor, Fuel Pump or spare part for your vehicle or have a look around our store to find a range of accessories to fill your needs! #AUD9203 SU Carb Float Bowl Lid HS HS2 HS4 HS6 Hs8 (AUD2276) $129. 5 inches) while it is some 2. 90 Add to Cart Explore detailed exploded diagrams of vintage carburetors for restoration and rebuilding projects at British Superior. It will not crack or absorb fuel and is immune to a variety of Feb 16, 2012 · Difference between SU H2 and HS2 Carburettor by rogerowen » Thu Feb 16, 2012 11:33 pm Can anyone explain the difference between SU H2 and HS2 Carburettor? Is it that the H2 fit to the manifold is vertical and the HS is 'slanted'? That's strange R2, the damage doesn't look so bad from here! This is the classic flat (pancake) chrome air cleaner assembly with a washable air filter element. 90 Add to Cart SU HS4 Carburetter Spare Parts. 015 SU HS CARB W/ALL-NYLON FLOAT SIGN, PARKING, JAGUAR JAG SLEEVE COMPRESSION UNION MULTI-MARQUE, BRITISH SPACER, CARB, HS2 SPM SPACER, FUEL PUMP TR7, SPIT 1500. IMG_3431. U. Jul 23, 2018 · I've been looking through the operations and repair manual for the Spitfire and found this image that resembles my carburetor and throttle connection assembly. I removed the air cleaner housing and checked out the linkage. We prefer the solid needles in this kit and the adaptors (sold separately) allow this conversion. Ensure thatthe throttle disc is correctly positioned and closes correctly before This is a updated float for all SU HS-Series carburetors, HS2, HS4, HS6. Dec 15, 2008 · Hey guys, The jet is stuck on one of round-top '72 SU carbs. This car is a 59 and has a AUD 924 carb that was only CSK59 Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: Mini Cooper S 1275 1964 - 1970 1275 cc Tags: AUD146L and AUD146R Mini Cooper S 1275 1970 - 1971 1275 cc Tags: AUD440L and AUD440R This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold John Twist demonstrates this critical step in the rebuild of an H type SU carb. Simply remove the fuel line and three screws, swap the covers, replace the screws and lines and you're done. Our new floats are molded from a modern, American-made material called Nitrophyl®, which is now specified for just about every modern fuel float. Sure, Webers may be sexier and have more racing titles to their credit, but for normal use these SU carbs work well. 2 x "D3" Needles - AUD1142. AUSTIN A40 FARINA Mk 2. see illustration. The offset allows them to clear the master cylinders. Carburetor Rebuild Kit Rear SU HS2 64 to 67 Sprite Mk III, MkIV, Midget MkII, MkIII $69. Please note, this assembly is only suitable for Right Hand A full repair kit for a Pair of HS2 Carburettors Including Jets, Spindles & Discs, Needle Valves, Gaskets, Seals & Needles of your choice. 25'' HS2 carb; includes thick rubber gasket. Includes jet assembly, needle and seat, throttleshaft, disc, fasteners, throttleshaft bushes, and all gaskets and seals. HS4 carburetors. Float chamber fixed to carburettor body by a single (horizontal) bolt. I still have some other work to do before I can run the motor and check for leaks. 1. Jul 2, 2009 · Chester - thanks for your input. Products available for immediate dispatch. SU Carb History SU Books available Comparing Metering Needle Dimensions "Tuning" and "Synchronizing" SUs Tuning Tool Set Mixture adjustment Initial Mixture Setting After Jet replacement Damping of Dashpot Damping Oil The "5-7 Second Test" Damping Valve Function Thumbscrew of Dashpot Damping Valve keeps loosening Damping Valve Assembly SU Carb Applications Metering Needles Common SU problems Diagram of SU 38/44 HIF carburetor parts historically available for the classic Mini Cooper Jul 2, 2021 · Triumph Herald 13/60 SU HS2 Carburettor Piston Needle Diaphragm Assembly 1970. This kit includes everything you will typically need to overhaul the carburetor. ~1 x STANDARD M NEEDLE - AUD9098~. Viton tip, ethanol ready, in stock and ships same day. 090in AUD9141 Genuine K&N conical air filter assembly for 1. WOLSELEY 15/60. STANDARD "AN" NEEDLE. These new SU carbs are beautiful and all you to start fresh with matching new parts with no wear. Fuel flow into the carburettor float chamber is controlled by a usually effective ball valve design, however over time this system can be a potential problem area. Carb service kit for a single or left/front SU HS2 carb, includes gaskets, needle, seat, and jet assembly - at MiniMania. (d) Lift the chamber assembly (4) vertically from the body without tilting it 2 Ball bearing suction chambers (early type). When the jet is correctly centred. Before resorting to the quick and make-shift solution of lowering the needle in the piston, examine the sketch below carefully and compare the actual carburetor to them. Please note: This item is limited to 1 per order. Also available as part of an SU rebuild kit which can be ordered on our website. Our HS2, HS4 & HS6 Type Float Chambers are designed for precision fuel delivery, ensuring smooth and efficient performance for SU carburetters. AFHS2EA This is a high-gloss, round, air filter made out of polished stainless steel and suitable for a SU HS 2 carburetor. (b) New throttle disc retaining screws must be used when refitting the disc. Anyway, the first problem I run across is the need to replace my needle/seat in the float bowls. Aug 6, 2010 · To get around this, loosen the jet assembly, move things around, and then slowly--really slowly--tighten it as you lift the piston and drop it. 90 Add to Cart Oct 26, 2025 · Austin Healey Mini Sprite MG MIDGET Morris MODEL AUD9203. at The MG Experience Genuine SU carburetter float chamber lid assembly complete with float, gasket, needle and seat. Moss Motors, Ltd Jet assembly for single-carb application SU HS2, such as 850 classic Mini and classic Mini Moke. Secrets of the SU Carburetter - Part 1 Video disassembly of an SU HS2 carburetor, demonstrating damper, suction chamber, spring, air piston with tapered needle, body, choke, throttle disc (butterfly), float bowl (4 moving parts). The numbers in the drawing correspond with the numbers in brackets in the item description on this page. The proper solution may be Dec 30, 2019 · In this video, Ed D'Arata, Mini Mania's SU Carburetor genius, goes through the differences between the various SU Carbs found on classic Minis, Sprite & Midgets, and Morris Minors. ) AUD9098 Fuel System @ ESM Morris Minors carry huge stocks of new spares as well as a large number of those difficult to find secondhand parts for Morris Minors. Moss Motors is proud to offer genuine SU carburetors produced in the UK from a combination of new and original tooling. May 18, 2023 · SU Carburettor Spares SU CARBURETTOR SPARESHS2 Jet Assembly . Type "D3" - FIXED. Rebuild kits for all models of the SU including: HS2, HS4,HS6, HIF44, HIF38 Carburetor Kits - only from Mini Mania HS Type Carburetter: Reassembly After inspection (see following page), reassemble by reversing the procedure used to dismantle the carburetter, noting the following: (a) Ensure that the throttle disc is fitted in its original position. 6 December 9, 2019 -- by Fred (Jack) Horner Provided by and reproduced here with permission of the author. StoreSuitable for all HS Type Carbs. com This video is an 8x speed time lapse video of me assembling a set of Twin HS2 SU carbs. SU Carburetters is known to many as the king of carburetters both on road and track, a brand with an illustrious history we urge any enthusiast to read the incredible history of the SU Carburetter Company. The actual photo was very Jet Assembly HS2 Plastic (S. I thought that might be providing some "slop" and causing the problem. Explore HS Type carburetters, known for their side-mounted float chambers and constant depression principle. #19 is the nut that facilitates up and down adjustment on the jet. A complete reference book for your SU carburation requirements. Fit the needle, hinged lever and hinge pin. Learn about features, maintenance and tuning. jpeg Thanks Les, I've managed to sort it now. 25" SU carburetors. LHD Minis w/ dual carb applications may have clearance issues. Use also for Mini HS4 in place of AUD9451. A Genuine Used SU HS2 Carburettor Throttle Stop Lever & Associated Parts. Su carbs are side draft carbs and are a marvel of simplicity, but can be a headache if not set up correctly. For use with TWIN SU 1¼” Carburettors. See below for instructions. This kit includes the parts to rebuild two HS2 Carbs. It has only one jet (except in a few special types) and very few moving parts. With the hinged lever resting on the seated needle, check that a 0. Including the bolts heads, the total thickness goes to 4. #AUD9998 SU Carburettor Hs2 1-1/4" Piston And Suction Chamber $299. Tired of the original style floats that crack and fill with fuel? We were, too. MG Midget production years with 1275 CC engines range 1966-1974. They seem to work fine as far as keeping a steady idle and delivering power. fa 12. JET ASSEMBLY &. Each chamber is stamped with the part number on the side, making it easy to identify the correct bowl for your specific setup. Nov 17, 2022 · About this item Perfect Fitment for High Flow Air Filter: Designed as a direct replacement for the SU HS2 1¼ Inch Carburettor, our High Flow Air Filter offers a perfect fit and high performance, ensuring reliable use and seamless integration with your vehicle's air intake system. These brand Mar 8, 2025 · SU HS2 Carburettor. 1 X STANDARD MIX NEEDLE - TYPE "M". Order online all Classic Mini SU Carburettors & service kits from Mini Sport, worlwide delivery Apr 13, 2022 · SU carburetor exploded view. If your vehicle is not compatible with E10 fuel, you will still be able to use E5 by purchasing the ‘Super’ grade petrol from most filling stations. The diameter is some 14cm (or 5. However, they suck gas, and when I punch it black smoke pours out the back. AUC8114A - DAMPER PISTON ASSEMBLY AUC8114A - DAMPER PISTON ASSEMBLY - With Plastic Cap Quantity required - 2 Nov 15, 2010 · You can see all of University Motors' videos by clicking here. If you are rebuilding twin carbs, please see CRK101. Custom built K&N air filter, with a special offset to fit dual HS2 SU carburetors on left-hand drive Minis. Carburetor Float, SU HS2 HS4 HS6 Type, Nitrophyl-This is a updated float for all SU HS-Series carburetors, HS2, HS4, HS6. 1 x RIGHT Hand JET Assembly. Weight approx 1. SU Carburettors The SU carburettor is a relatively simple design but has proved to be very effective. AP-9510-2SU - Twin SU carburettor assembly for 10hp and 100E Twin HS2 1 1/4" bore carburettor assembly complete with linkages and banjo fuel unions, for fitting to our Aquaplane inlet manifold. Ensure proper fuel level with precise measurements for optimal performance. 90 Classic Mini Su Hs2 & Hs4 Float Lid Assembly Description Recommended Also Purchased Products in Category Shipping Warranty Price Guarantee HS2 carburetor parts and accessories for the classic Mini, Mini Cooper, and variants Thanks to James Barratt, of James Barratt Mobile Mechanics for helping me with the rebuild of my first carburetter and showing me the ropes :) https://www. Ref: AUD9098, AUD9098A. However, I did notice that the screw that attaches the linkage to the jet was only partially screwed in. 1 x LEFT Hand JET Assembly. Buy SU Carburettor spares from Mini Sport, the worlds premier online Mini store. It doesn't look right. All components had been stripped and cleaned previously, and the carb The SU Carburetor Advantage SUs are one of the simplest, most elegantly designed carburetors ever invented, and they work phenomenally well under the bonnet of a classic British sports car. Sold individually. Hold the HS Type Carburetter: Tuning (General) It is essential, particularly where vehicles are equipped and tuned to comply with engine emission control regulations, that the carburetters are tuned in accordance with the vehicle manufacturer's tuning data. JQ mentioned reseating the dashpot needle can stick SU Carburetter Service Kit for 2 x HS2 carburetors for Austin Morris 1300 GT CSK59 CSK 59Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: The Technical page for the SU Carburetters website. HV2, H2 & HS2 Piston & Suction chamber assembly - Non Dustproof (vented cap required) This piston is for side keyway carburettors, using fixed metering needles. Learn three key methods to identify carburetters in multi-carb installations, including specification tags, driver positioning, and throttle/choke interconnection. Condition is "Used". It looks like the float must Apr 2, 2006 · Library Article: How to adjust and synchronize the "mysterious" dual SU carbs on your MG. it may appear offset from the centre of the jet bearing drilling. Many issues can cause this symptom, but sometimes improper choke operation is Find the correct float height settings for SU carburetters, including T1, T2, T4, and HS models. Fits all model years equipped with 1275CC engine as well as other years makes and models. Includes Gasket. 99 1 In Stock Quantity Mar 13, 2019 · Even though the SU carburetter (carb) is a very basic yet precise instrument, some fundamental understanding on just how it works is needed to be able to deal with common problems and tuning. ~1 x STANDARD JET ASSY~. I attached a photo of the current setup when I first acquired the vehicle. This is due the SU being analogue and the vast array of needle profiles available. Learn routine servicing for H Type carburetters, including jet centering, cleaning techniques, float chamber fuel level checks, and needle size adjustments. Please click HERE for the exploded view drawing of the S. Hence, the SU is called a variable venturi carburetor and is grouped with those built by Stromberg, Predator and Amal. Invert the complete assembly and allow the suction chamber to fall away from the piston. SU Carburettor - Needle and Seat Fitting SU carburettors are simple and very reliable in service but they can suffer from a few basic drawbacks. Mini Main Carburettor RH Jet . REBUILD KIT, Genuine SU, HS2, for 2 carburetorsThe Longest in the Business All Classic British products are warrantied to be free from defects in material and workmanship for 2 years from the date of invoice. I can't even physically move it up or down. HS2 carburetors. The range of available jets is of course immense as SU has been supplying so many makes of cars with carburetters for so long so this section will change frequently and will grow over time. #23 secures the jet bearing into the body. The second photo shows enrichment linkage as connected to the HS2 along with some text regarding adjustment. 5 inch carburetter. SOME OF THE MODELS THIS WILL FIT LISTED BELOW BUT WILL SUIT MANY MORE. All superchargers, supercharger components, and supercharger hardware are warranted to be free from defects in material and workmanship for 1 year from date of invoice. Sep 17, 2011 · I need to rebuild my HS2 carbs, but can't find a good source for rebuild instructions. The SU carburettor is simple to strip. 44 in (11mm) diamter twist drill can be inserted between the forked lever and lip of the float chamber lid. Refit the damper assembly and washer. com SU Carburetor Dating on MGA (1955-1962) - CB-127 Including sorting out the bits for correct assembly Rev. It will fit most cars using the H2 and HS2, 1 1/4" throat carburetors. This workshop manual contains clear, detailed & easy to follow instructions for servicing and tuning the most common types of SU carburettor H, HD, HS and HIF, as well as thermo carburettors. The often underrated SU offers good versatility and reliability. 090 for SU LHIC HS2/HS4 Carb. On this page you will find a selection of our currently available original SU Carburetter Jets. This is a complete pair of right & left rebuilt carbs. Center the Jets on Su Carburetors If you have an old British sports car or a Z type car from the 60s or 70’s, chances are it is equipped with su Carbs. Proper SU carburetor choke operation for classic British car owners bugeyeguydotcom 6. I could use some advice on what parts to order from the company I am using called "Minor Spares". SU 1¼” HS2 Carburettor - AUC928. 99 1 In Stock Quantity Explore our Linkage Parts top automotive parts at SU Carburetters UK. 090" for HS2, HS4 and HS6 SU Carburettors. Set up for 10hp/100E, price is for a set up of two carburettor etc. The float chamber is bolted horizontally through the body of the carburetter and can be mounted either flexibly (on rubber) or rigidly. 5cm (or 1 SU CARBURETTOR HS2 (1-1/4") HS4 (1-1/2") SERVICE KIT WITH UNIVERSAL JET TO SUIT LEFT OR RIGHT HAND FUEL BOWL. Nov 6, 2025 · SU HS2 Carburettor. I snugged up the screw, sprayed carb cleaner in all likely places, but still REBUILD KIT, Genuine SU, HS2, for 2 carburetors Fitment Model (Site) Category Schematic Key Name Application Qty Triumph Spitfire Air Filters, Carburetors SU Carburetors – 1962-69 103 REBUILD KIT Mk1-3 1 Warranty The Longest in the Business All Classic British products are warrantied to be free from defects in material and workmanship for 2 years from the date of invoice. If there is a gap, or if the bar lifts Explore our HS Floats top automotive parts at SU Carburetters UK. Get one kit per pair of carburetors. Comprehensive reassembly guide for H Type carburetters, covering throttle spindle installation, jet centering, piston assembly, float chamber setup, and linkage reinstallation. It comes with 2 Viton rubber gland seals. ~1 x JET ASSY - AUD1261~. What is the likely cause? Is there a simple fix? I haven't done much work on these carbs but I do understand basically how SU carbs Jun 10, 2023 · We show you how to rebuild and tune the popular SU carburetor for your British classic. On this page you will find our currently available original SU Carburetter Spare Parts for the HS 2 series. The return spring goes with the throttle. To achieve the best results when tuning, the use of a reliable tachometer, balancing meter and an exhaust gas analyzer (CO meter of the infra-red SU Carb History SU Books available Comparing Metering Needle Dimensions "Tuning" and "Synchronizing" SUs Tuning Tool Set Mixture adjustment Initial Mixture Setting After Jet replacement Damping of Dashpot Damping Oil The "5-7 Second Test" Damping Valve Function Thumbscrew of Dashpot Damping Valve keeps loosening Damping Valve Assembly SU Carb Applications Metering Needles Common SU problems Jun 15, 2025 · A Genuine Used SU HS2 Carburettor Throttle Stop Lever & Associated Parts. This kit services a single or left/front HS2 carb. "Fit the float chamber valve seating to the float chamber lid. If the needle starts to bind, loosen the nut and move things around again. Taken off my Herald 13/60 1970 and stored in a box since late 80s Aug 4, 2025 · HS2 SU CARBURETTOR. It has the two sharp bends and looks correct. Flexible hose as feed for the jet assembly. Check before you use E10 Petrol in your Classic Car. Removed from 1967 MG Midget. Apr 12, 2018 · SU HS2 carbs and fuel/ float level Page 1 2 3 Topic List Forum List Newer Older Start New Topic Somerford Mini - Mini Specialists : Carburetters - single hs2 1959-74 - Body Panels Catalogue Consumables External Body Fittings Catalogue Keys Running Gear & Subframes Cooling & Heating Fuel & Exhaust Systems Electrical & Instruments Transmissions Internal Body Fittings After installing a re-build kit in an SU carburetor (especially an H-series) it is sometimes impossible to achieve a sufficiently lean mixture by manipulation of the mixture adjusting nut alone. Jet tube for the HS2 SU carb: if you have a single carb, this is it; on duals it is for the left or front carb. On this page you will find our currently available original SU Carburetter Spare Parts for the HS 4 series. Aug 30, 2014 · Picked up a "superdry" kit from Burlen SU today. Sold by the pair. STANDARD MIXTURE NEEDLE. 74K subscribers Subscribe Find many great new & used options and get the best deals for Triumph MG Austin Healey SU Hs2 Carburetor Rear Float Bowl Top Lid AUD 2277 at the best online prices at eBay! Free shipping for many products! CSK59 Factory-Original Service Kit for the 1¼ inch SU HS2 carburetors as fitted to, amongst others, the: Innocenti Regent 1300 1974 1275 cc Tags: AUD534L and AUD534R This set contains, amongst others, of the following parts to service 2 carburetters: Various versions of airfilter gaskets Various versions of inlet manifold gaskets 2 Needle & Seat sets 2 Float Spindles Various O-Rings 2 Jet Refit the assembly to the carburetter body but leave the jet locking nut slack. Sep 21, 2025 · 1¼” SU HS2 Carburettor AUD13. 2 x Standard MIXTURE NEEDLES. Sep 22, 2020 · The SU employs this principle differently because it varies the size of the venturi. large selection professional support fast delivery Aug 20, 2002 · I've spent a lot of time adjusting my SU carbs (with 31 years and 128,000 miles on them). 25 inch or HS4 1. 090" UNIVERSAL JET $59. Same as Mini AUD9098. While some people are quick to cast SUs aside and look for an upgrade, a little understanding and mild tuning can go a long way, whether the goal be increased performance, better drivability or improved fuel economy.