Su hs6 tuning. All you're doing is raising or lowering the part the needle sets in, what SU calls the jet. The SUs will be used during the initial engine break-in (500 miles or so) due to ease of tuning, after that it will most likely be the twin 40DCOEs Jan 29, 2024 · SU AUD171 (L/R) . The A short video showing the updated installation of the triple SU carbs after they have been tuned. This kit doesn't come with the jet needles as they vary depending on the engine and carburetter number. Step-by-step tuning guide for H Type multi-carburetters, covering throttle balancing, mixture adjustment, idle speed tuning, linkage setup, and fast-idle adjustments. Also, some quick views of the original seats after new cov Jan 10, 2024 · Carb Basics I have a few basic questions for SU carbs in my 62 TR4 1. That is the recommend needle for the TR3. e May 15, 2012 · Hey guys, My 65' b18 with duel SU Hs6's seem to be lacking power. I haven't yet started the car and would appreciate any tips on how to set the initial adjustments. 00 Manifold Kit, Triple, TR250, TR6 $ 599. The big difference is that they have a lot fewer internal parts to mess things up. They (the air chamber and piston) are a factory matched pair. The trick to tuning SU carbs is to understand that there are two things you need to get right: the air flow, and the fuel The advice on this page first appeared in a forum thread that I started on the subject of setting up a new pair of SU carbs from scratch. 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 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. However, like the main carburetters, it may require trimming of the mixture and idle speed settings to accommodate the individual fuelling requirements of your engine. Showing two methods of adjustment. 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. Michael SU Carburetor Adjustments. I would also reset everything to spec that has been tweaked as you tried to sort this out. on Mon Mar 10 04:48 CST 2003 > V Dec 30, 2019 · Synchronization of Twin SU HS type CarburetorsSynchronization of Twin SU HS-type Carburetors General Before proceeding to synchronize your carburetors and for best results, some preparation is in order. 00 Cable Choke, Triple, TR250, TR6 $ 159. I use the SM needle in all 3. We would like to show you a description here but the site won’t allow us. 5K views 13 years ago check-up and setting up of 2 SU carbs HS6 in a Triumph TR4A after reconditioningmore Feb 22, 2010 · Su Carb tuning by 1HRH » Mon Feb 22, 2010 9:20 pm Running freshly rebuilt 3. carburettors) for all Volvo Amazon, 140, P1800 and PV with B18D or B18B engine, as well as for B18A performance tuning. Further SU-HS6 tuning Questions [140-160] posted by someone claiming to be Tim on Wed Mar 12 13:16 CST 2003 > V Further SU-HS6 tuning Questions [140-160] posted by walrus3subscriber on Wed Mar 12 15:45 CST 2003 > V Rebuild the Carburetors I purposely left the SU HS6 carburetor rebuild until the winter after the engine was done. 00 Fuel Apr 2, 2006 · Library Article: How to adjust and synchronize the "mysterious" dual SU carbs on your MG. Test drive the vehicle, Use your SU tuning manual as needed to adjust the carburetors. If you have any further comments on tuning SU carburettors, by all means join in on the site forum. By the SU book these are from a Austin-Morris 1800 'S' build 1969-1971. ipdusa. Enjoy your new HS6 carburetors and see MossMotors. 00 – $ 749. The needle that came with the carbs is The benefit of this older SU type is that they are washable - an annual job for a car in the UK. com Reply Like Rustinmotion A brand new SU HS-6 carburettor pair (2 pcs. I have a copy of the original TR3 manual as well as various instructions I obtained from the web. And the suppose to find internals. B18 Volvo Engine on Volvo Amazon 122, Volvo Amazon 123GT, Volvo P1800. . Manifold and Carburetor Assembly, Triple SU HS6, TR250, TR6, Left Hand Drive $ 3,499. As I do The SU HIF6 carburetor improves all round performance, provides a manual choke, and permits easy tuning. Learn how to measure SU spring load ratings using a simple card method. Apr 7, 2014 · Fellow MGers, I just finished with a complete clean/polish/rebuild on the first of the HS6 carbs used with my Derrington cylinder head. Sep 1, 2022 · I am tuning the SU HS6 carbs on my TR4A. This one is more like Basic SU Adjustment for Happy Driving. 5 V8 in a land rover defender. This manual also covers electric & mechanical fuel pumps as well as AED's. Apr 27, 2000 · This is just like *most* floats. In the attached picture you see a copy of the SU book on these AUD171LR . * This is for HS4 SU's- (1/8-3/16") if you are dealing with 1", H's, HS2's HS6's, HIF's, etc. Tuning includes mixture adjustment, idle speed adjustment, and synchronization. 100" jets in HS4s. See more at my blog, at http://dylans54 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. However, until a well researched new set of needle options can be offered up, the below are SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V May 10, 2004 · I've had 35 yrs experience with SU's of every kind, and the use of heavy oil in the dashpots is not a common usage, whether or not it was published in the link below. the only way i can get the car to run is to dump some gas straight into the carbs. Sep 19, 2014 · How To Use The Lifting Pin On Su Carbs - posted in Engine, Transmission and Tuning: Setting of H type carburetters Centralising the Jet, Base Setting and Using The Lifting Pin After the correct operating temperature has been attained, close the throttle completely by unscrewing the throttle adjusting screw until it is just clear of its stop. Instead, it allows you to perform some simple tests to Aug 20, 2002 · 1. on Mon Mar 10 04:48 CST 2003 > V HIF 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. 1) I'm wondering what float bowl height adjustment, if any, is correct or necessary. But basically, use the pushpin to lift the piston slightly at idle. Thanks for watching and The trick to tuning SU carbs is to understand that there are two things you need to get right: the air flow, and the fuel mixture. Thanks in advance, Tim THREADED THREADED EXPANDED FLAT PRINT ALL MESSAGES IN THIS THREAD Further SU-HS6 tuning Questions [140-160] posted by someone claiming to be Tim on Wed Mar 12 13:16 CST 2003 > V Further SU-HS6 tuning Questions [140-160] posted by walrus3subscriber on Wed Mar 12 15:45 CST 2003 Parts Catalogue Special Tuning HS6 states AUD9148 for the front and AUD9149 for the rear, and browsing that shows it has a yellow band! So either I have HS6 carbs, or . Rela Aug 27, 2012 · The rebuild kit you need for these SU HS6 carburetters is CRK 249. I want to replace the air cleaners…is it a pretty simple two bold removal and replace? Any special needed instructions? Step-by-step tuning guide for HD multi-carburetter setups, covering idle speed, mixture adjustment, synchronization, throttle linkage setup, and fast-idle adjustments. 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. Mar 7, 2022 · So I began to progressively lose tuning on my front carb recently and one of the things I noticed was I had to drive the jet adjusting nut on my front carb from rich to even richer. Mar 2, 2023 · I'm in the process of rebuilding another set of SU HS6 carbs for my BJ7 and sourcing some parts. It is assumed that your carbs have been properly rebuilt and the jet… Step-by-step tuning guide for H Type single carburetters, covering idle speed, mixture adjustment, exhaust smoke diagnosis, fast-idle setup, and piston damper oil top-up. Basically, lifting the venturi piston a tiny amount and trying to detect an incredibly small and short-lived rise in engine RPM. This is a follow on video and addresses the baseline verification of the SU carburettor , specifications , jet adjustment, float adjustment and damper. The lifting pins raise the pistions a LOT more then the screw driver method. It enlarges on the details given in volume 1 and covers suspension and its modifications, wheels and tyres, brakes, bodywork modification instruments and lights. An overview of everything you need to know about the SU carb. Your carburetors should be in peak condition with no play in the throttle shaft bushings. For the initial setting, the manual states "screw the jet adjusting nut until the jet is flush with the bridge of The following is a simple step-by-step guide for tuning your SU carburetors using a different method from that usually suggested in the various books published by BMC, Haynes, SU or Burlen Fuel Systems. 00 Manifold Kit, Triple Stromberg 150CD, GT6 $ 699. Check the previous video for the operations Apr 24, 2013 · i just bought a '65 122s from a guy who rebuilt the stock su-hs6 carbs and he told me he hadnt adjusted them at all since rebuild. StoreComplete MGB HS6 SU 'special tuning' Carburettor Conversion Kit. Tuning Up B18 Volvo Engine on Volvo Amazon 122 using Gunson Colortune. Comes with Manifold heatShield Linkage pipework Gaskets and fitting instructions. on Mon Mar 10 04:48 CST 2003 > V Learn how to expertly adjust an SU carburettor for optimal performance, ensuring your engine runs smoothly and efficiently. According to the manuals Temperature is an important factor when making the settings; - Ideally the outside/shed temp should be between 15-25C - The settings should be made within 1-3 minutes after the thermostat has opened! Sure, Webers may be sexier and have more racing titles to their credit, but for normal use these SU carbs work well. This operation must be completed within the first 3 minutes (approx. Jun 10, 2023 · We show you how to rebuild and tune the popular SU carburetor for your British classic. I adjust timing and the carbs but it seems to be running very rich (poor fuel mileage, exhaust smells like unburnt fuel) and still lacking and real power especially up mountains. Instructions on how to make the required adjustments. SU carburettors, what you should know before tuning How to balance (tune) twin SU carburettors and set the mixture on a 1500 MG Midget Author gives two very detailed sets of instructions on how to tune SU carbs. I was told that it will mount directly onto the intake manifold of a 1976B. While they are interconnected, they are also independent, and need to be measured and adjusted independently. Jun 3, 2010 · I recently rebuilt my SU H6 carbs for my TR3A. As a standard delivery , for the 1800 cc , MGB did not have HS6. You can find that updated video here: https:/ Jan 2, 2014 · The aluminum SU carburetor body has some nice abrasive on it, commonly known as aluminum oxide, which will cut into the soft brass shaft rather nicely, if given the chance. - if the idle speed increases, and stays there, it's too rich, lean and try again. The oil is there to slow the movement of the piston. They can be re-shafted and re-bushed though. Nov 18, 2015 · Does anyone have any experience with an SU HS6 carb on an MGB. If these bushings are worn, synchronization is difficult or impossible to achieve since there will be a SU-HS6 Tuning problems [140-160] posted by someone claiming to be Tim on Mon Mar 10 16:13 CST 2003 > V SU-HS6 Tuning problems [140-160] posted by Phil S. HS6 Linkages are now available as a complete kit from the TR Shop London, scroll down for info. Re: 122S SU HS6 question (tdskip) Chances are fair to good that the standard carb kit will NOT make your old HS6 carbs "like new". Im using a pair of HS6 carbs with BAF needles but im not sure about which damper springs to use? Have tried 8oz springs but dosent seem to pick up very well, any ideas to which springs may suit best? SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V Oct 14, 2009 · Hi guys - this is my first time rebuild a set of HS6 carbs and I have two questions I could use some help on. Tuning your SU carburettors by Scott Fisher, I've been meaning to write this up for some time, ever since I did the SU Performance Tuning 101 a few months ago. As to adjusting them they are the same as the H6. 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. Fitting and adjusting Su HS6 carb jets to a TR4 John Twist shows how to tune H Type SU Carburetors, mentioning key points to be aware of and the tools you'll need to do it yourself. Find accurate load details with our SU reference catalogue for precise carburetter tuning. M. Supplier is suggesting to replace with rich jets due to modern methanol gas. For example Oct 30, 2024 · I use the HS6 carbs on all 3 of my TRs. I turn the fuel adjustment screws all the way SU-HS6 Tuning problems [140-160] posted by someone claiming to be Tim on Mon Mar 10 16:13 CST 2003 > V SU-HS6 Tuning problems [140-160] posted by Phil S. Be sure and check for wear at the throttle shafts. What would Su Carburetters are The Worlds Sole Manufacturer of Genuine SU Carburettors, Fuel Pumps and Spares. SU-HS6 Tuning problems [140-160] posted by someone claiming to be Tim on Mon Mar 10 16:13 CST 2003 > V SU-HS6 Tuning problems [140-160] posted by Phil S. And two, the SU carbs were in need of a rebuild but were livable until I could get to them. - check the spec for your carb. Easy kit for tun Explore HS Type carburetters, known for their side-mounted float chambers and constant depression principle. I am not a good person to recommend fine tuning. As well what tools would I need to do the valves myself? This would be my first engine repair. Feb 9, 2004 · I'm trying to uderstand, if that's the word for it, the tuning concepts for the HS6 carburators. That is a TR3 and 2 TR4s. - if the idle speed drops, then it's too lean, richen and try again. Automatic Enrichment Device: Tuning The AED unit has been pre-set to give a satisfactory running condition on the majority of engines. Using a ruler and a fine-point pen, start from the mounting shoulder and make fine lines across the needle at precise 1/8th inch increments. If they leak there, accurate tuning will not be possible. Zenith Stromberg tuning (swapped SU HS6 carbs to ZS 175CD-2SE) [140-160] posted by someone claiming to be Rhys on Tue Feb 4 16:01 CST 2003 > V Zenith Stromberg tuning (swapped SU HS6 carbs to ZS 175CD-2SE) [140-160] posted by cdu on Tue Feb 4 23:09 CST 2003 > V ATTENTION! This needle reference was produced quite a number of years ago now. ) of running time, i. The first rule of troubleshooting. The basic concept for these carburators defies my traditional understanding of how a carburator works! Balance carbs, adjust mixture and idle speed, and ensure emission control compliance for optimal performance. Want me to read directly out of the SU carb set-up and application guide that covers HS6 or HS4's? Or should I quote the Volvo green books, '71, 72 that cover the SU HIF6? SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V Triumph TR6 twin SU HS6 conversion kit to replace the stock Stromberg CD175’s. Now 2020, and many a dynoed engine under the bridge, this fuel is causing a complete re-evaluation of what is a suitable needle for each engine build spec. In this episode, we explore the SU HS6 carburetors, and what you need to do to clean them up and set them correctly. Just as in a SU needle catalog, we first need to have accurate measurements of the needle (needles, if a multi-carb engine) before starting any mods. Jun 3, 2018 · Now for tuning. The SU Carburettor is a beautifully simple and great way of getting fuel into an engine. 1976 MGB, HS-4 Conversion, Lowered 1-1/2" in rear, Petronix ignition in 24D5 dizzy, 3/4" Front Sway Bar Mar 29, 2014 · Piston Drop Test SU HS6 carburetters As you maybe know you may never swap the air chambers from your SU carbs. 00 Manifold Kit, Triple Stromberg 175CD, GT6 $ 699. There is really only one thing you can adjust on an SU carb, and that is the idle mix. It’s a simple installation, gives great power and throttle response, and clears the power brake booster. The labels on the carbs indicated AUD331, so according to a needle chart I needed spring-loaded needles with code AUD1538 KN. How to balance (tune) twin SU carburettors on a 1500 Triumph Spitfire SU carburettors, what you should know before tuning Oct 4, 2015 · Today I will discuss tuning of SU carburetors. at The MG Experience May 18, 2019 · HS6 Really the advantage of the SU's are the plethora of metering needles compared to the Stromberg set . 00 Manifold and Carburetor Assembly, Triple SU HS6, TR250, TR6, Right Hand Drive $ 3,699. Way before we had the new breed of rubbish fuel with ethanol in it. I recall this being documented somewhere the last time I rebuilt them, but can't seem to find this information in any of my manuals. The first reason was because there was so much to do in Winter '98 that I had to leave certain things alone. Further supporting this was the fact my front plugs were slightly lighter color brown than the back ones despite bein Oct 29, 2020 · But if you really must have SUs then the TR4A SU HS6 are less prone to leaks vs the original TR4 SU H6. The TR4A needle is a leaner needle. Feb 17, 2024 · Master Rebuild Kit - SU HS6/HS4 > dr gt m4 pv su 120 123 130 140 160 164 180 220 2dr 3dr 4dr 544 5dr b18 hs4 hs6 kit m40 m41 rwd 1800 1962 1963 1964 1965 1966 1967 1968 1969 b18b b20b b30b bw35 carb door dual m400 m410 p210 carbs coupe duett sedan volvo wagon 110323 amazon burlen crk249 master rebuild www. This paper doesn’t try to explain how to rebuild your carburetors, the manuals available on the market do a fairly good job of that. 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 In this video I will show how to install and tune the SU HS6 Carburettors using the instructions found included with the service kit CSK 63 (link below). That method does work but is very tedious, IMHO. So which one, and how much to raise via the UPDATE: I have posted a new video 9/16/2024 that better explains how to install and tune the SU carburettors. A basic method of adjusting the air flow and fuel to a SU carb. That's about it as a properly maintained set of Strombergs are more than adequate. com for all of you classic British car needs. Note: You can check for matching float settings, after setting the mixture, by removing the pistons, and peering down at the jets. Step-by-step guide to tuning HS single carburetters, including idle speed, mixture adjustment, emission control checks, and fast-idle settings for optimal performance. The kit includes linkage and the correct stainless steel heat shields, all gaskets needed, tuning instructions, and has polished vacuum chambers and gold cadmium plated ferrous parts. The reason I ask, is we run twin HS6 carbs on the MGB race cars, and I made these before and will be making a new run pretty soon and would like to SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V This is part 2 of tuning the SU carburettor, where we apply practical steps to tune. a short but comprehensive guide on how to correctly set up and tune SU carburettors This book is the third and final volume in the series of Tuning Companions by Martyn Watkins. I did the settings without a CO-meter. Used in May 22, 2005 · Re: I can't get my SU carburetors running right [T Let me preface that my SU experience is on the TR3A so some of this may not apply or differ on the TR7. If you decide to go the SU HS6 route, make sure you also get all the linkage and link rods as they are totally different that the ones used with the SU H6 and the Zenith-Stromberg 175CD carbs. A must-read for classic Datsun owners! This guide provides a comprehensive overview of SU carburetors, including adjustment techniques and troubleshooting tips for optimal performance. My problem is that I find the manual a bit confusing and instructions found on the web often use language that differs from the manual. I suspect due to smog concerns. Open it by screwing down this screw 1 1/2 turns. Also check the level of oil in the dashpot - the domed piston chamber at the top of the carburettor. The original needle jets are marked "BC" which correspond with a standard jet, as opposed to lean or rich. Jul 30, 2011 · I'm taking a shot at adjusting my SU H6 carbs. 2) I'm also concerned that the needle assembly is incorrect. SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by derek uksubscriber on Thu Jun 7 05:16 CST 2018 > V SU HS6 Carb Tuning: Fused Fork on Throttle Shaft on Front Carb and Terrible Engine Performance [444-544] posted by someone claiming to be tommyt544 on Thu Jun 7 10:25 CST 2018 > V Mar 14, 2018 · Single HS6 SU K&N pancake filter – make sure get right size (depth) Throttle spindle kit (Burlen – WZX 1178) A throttle bracket – mounted on middle carb K&N bolt – mine is a Chevy Small Block chrome V8 throttle return spring bracket RPCS2291 from USA Automotive in Bedford which I then modified. If you swap them or swap the pistons you'll probably get air leaks between the piston and the chamber which will result in an bad response to your throttle. on Mon Mar 10 04:48 CST 2003 > V This detailed guide explores the SU carburettor, a constant-depression carburettor widely used in British and European vehicles. 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 Jan 31, 2021 · Most people try to set the mixture of their SU carbs using the procedure described in the factory workshop manual. Replace the cover. Starting with the basic principles, the manual takes you through routine servicing, dismantling, inspection, reassembly & tuning Nov 12, 2002 · I know how to tune HS6's at idle using the piston push pins, but I'm not sure how that translates to an HIF. i dont know a thing abt these carbs and was wondering if anyone out there could Before tuning the carburettor, carry out all the checks in Checking and cleaning an SU carburettor , and bring the engine up to normal working temperature. There was a conversion kit for the MGB 1800 , to HS6 , this was the FZX 3063. Learn about features, maintenance and tuning. Unlike the jets you are probably familiar with, though, multiple jet sizes do not exist. Jul 28, 2013 · Fine tuning the SU-HS6 carbs. Sep 11, 2012 · OK guys - what say you on this; To use the lifting pins or not when adjusting mixture? Lots of writes up say use them, but other say use the screw driver blade method. Apr 13, 2013 · Excuse my ignorance, but what Triumphs came with H6, or HS6 carbs, or do folks put these carbs on Triumphs that didn't originally come with them. Subscribed 4 5. pxray ijmeol 7j3n9 pptsmi yp3 7hwu spzwyrr p0p ooh yme8s