Tuning Su Carbs Jaguar, There are only two adjustments on the

Tuning Su Carbs Jaguar, There are only two adjustments on the SU's. After appropriate mixture adjustment the REAR carburettor is correct. There is a distinct difference between HD8 carbs and the other SU carbs that preceeded them because HD8 carbs are adjusted with the throttle plates completely closed. MG Midge - Austin Healey Sprite, 100/4 - 100/6 - 3000 -Jaguar E type - Triumph TR TR2 TR3 TR4 Spitfire-MGB-Morris Minor-Classic Mini-H1-H2-H4-H6-HS2-HS4-HS6-HS8-HIF44 Carbs- Rebuilt-overhaul-refurb, restoration-restored-repair-recondition-SU Carbs by christopher storey » Mon Jun 18, 2012 11:38 am Chris : you can take it that whatever operation is contemplated, all 3 carbs should work in unison. the "factory This detailed guide explores the SU carburettor, a constant-depression carburettor widely used in British and European vehicles. I use a carb balance testerjust tests the suck at each inlet plus an ear and a screw driver. While they are interconnected, they are also independent, and need to be measured and adjusted independently. May 3, 2025 · Page 114 of the Jaguar Service Manual has the following instruction re SU tuning for mixture strength. This particular one is from a Jaguar XKE, but rebuilding any other SU is Here’s a note about SU tuning I wrote for another forum a while back. Please note. They are often misunderstood but if you adjust them a little at a time anyone can tune them with basic tools. Newly rebuilt Here is the unedited text of Ray Livingston’s “famous” thread on the Jag-Lover’s forum, regarding the method for adjusting SU Carburetors: Just go by how it drives. That is that the jet seals are somehow restricting the movement of the jet and the jet spring is not strong enough to overcome the friction. ) I originally wrote this up to assist a fellow XKer in adjusting the SU's on his Jag. An overview of everything you need to know about the SU carb. The Speed Sport Motobooks series is designed to present the perform ance and motor sport enthusiast with inexpensive guides to their particular enthusiasm, The books are constantly re-edited to keep up with modern trends and innovations, and are written by accredited experts backed by the editorial team from the monthly magazine Cars and Car Conversions. 125" Jet Includes Needle and Seat, Main Jet, Fibre, Copper and Aluminium Washers, Brass Washer Glands, Large and Small Cork Glands, all gaskets required (See photos) You are provided with a comprehensive, 12 page, fully illustrated Servicing and Tuning Guide. Then lift the front carb Generally, manual chokes consisted of cable device which produced richer starting mixture by mechanically lowering the single hollow jet of each carb relative to the carb needle Best advice I received is to ensure, before you start anywhere near the carbys. Has anyone done it? Is it worth it? I don’t want to go through the expense and extensive work fitting a Fuel Injection system. In this video I show you how to disassemble the carbs and inspect all the parts. In the shop manual it says to lift the piston of the rear carb and depending on what it does, to adjust the front carb misture. The Jaguar set up is not like eg certain Austin/Austin Healey 6 cylinder setups where one carb was set to open its throttle fractionally before the other . These carburetors present some unique challenges that I would like to discuss. We have over 43 years SU carburettor tuning experience and have specialist carburettor tuning equipment that can achieve first class results for our customers. I just read something in the original shop manual that that goes against what I always thought was the right procedure. The first is to set the fuel level in the float bowl, the second is to centre the needle in the jet, but only with fixed needles, not spring loaded ones, the third is to balance twin carbies. The SU is about as simple as a carb can get: it has very few moving parts, usually only one fuel circuit, and far fewer springs, balls an There are four distinct phases to tuning SU carburetors (carbies). 8L Uprated cams purchased from Gran Turismo Jaguar UX needles installed Mallory Unilite Distributor Dwell angle = 50 Dwell % = 83. The fuel should be about 1/8" below the top of the jet. Over the past few months, I've cleaned and repaired the inner working components of the SU Carburetors, the external SU Fuel Pump in the boot, and also the fuel filter/sediment bowl on the forward Author gives two very detailed sets of instructions on how to tune SU carbs. I’m looking for input regarding replacing the stock Stromberg Carbs with SU Carbs on a V12 powered E-Type. It takes you through the theoretical basics of tuning and some very specifics of the SU. 0 by: Charles Bishop (For a printable, PDF version of this, click HERE. ? Kits are readily available and anecdotal evidence says that they give a decent increase in both performance The Speed Sport Motobooks series is designed to present the perform ance and motor sport enthusiast with inexpensive guides to their particular enthusiasm, The books are constantly re-edited to keep up with modern trends and innovations, and are written by accredited experts backed by the editorial team from the monthly magazine Cars and Car Conversions. csyrn, psb0l, cr6t, xi89q, uc2e, tyigu, uboo, wbyv, wzto, vvck,