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Topic: SU carburetor

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	SU carburetor - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-04)
		SU carburetteurs (named for Skinners Union, the company which produced them) were a brand of sidedraft carburetor widely used in British (Triumph, MG) and Swedish (Volvo, Saab 99) automobiles for much of the twentieth century.
		Hitachi also built carburetors based on the SU design which were used on the Datsun 240Z and other Datsun Cars.
		The piston is moved up and down by the partial vacuum in the inlet manifold, depending on the position of the throttle plate, between the carburetor piston and the manifold.
	en.wikipedia.org /wiki/SU_carburetor (240 words)

	SU - Wikipedia, the free encyclopedia
		Look up su in Wiktionary, the free dictionary.
		SU(n) in algebra, a special unitary group, or the corresponding Lie algebra in mathematics,
		SU carburetor, or Skinners Union, type of carburetor used in many british cars,
	en.wikipedia.org /wiki/Su (171 words)

	SU Caburetor Notes
		In the factory machining of SU carb bodies there always seems to be some rough flash metal protrusions left, some quite prominent, where the horizontal bore of the body proper intersects the vertical bore for the piston.
		The purpose of the SU damper is to retard the rapid upward movement of the piston on rapid throttle opening associated with acceleration.
		SU carburetor suction chambers and pistons are furnished as matched assemblies from the factory.
	www.jcna.com /library/tech/tech0006.html (5928 words)

	TECHNICAL TIP #6
		As you tune an SU at idle, this means that you temporarily have a rich mixture which can fool you into believing that you should turn the mixture adjusting nuts (called "idle adjusting nuts" in the Nissan article) so as to lean out the mixture.
		Apply a flow meter to front carburetor air cleaner flange, turn in or out air flow adjusting screw, and align the upper end of the float in the glass tube to the scale.
		Although carburetor may be normal, if the electrical system is defective, the cause of trouble sometimes may seem to be in carburetor.
	www.teglerizer.com /sucarbs/techtip6.htm (3488 words)

	Triumph Spitfire Resource Site
		SU carbs were used on the early Triumphs, while ZS carbs were used on the later ones.
		On early SU carbs, this is the lower of the two nuts at the very bottom of the carburetor.
		SU and ZS carburetors are most fuel-efficient when slightly lean, and provide the most power when they are slightly rich.
	www.geocities.com /MotorCity/3122/Carbs.html (2169 words)

	[No title]
		Later SU carburetors of the HIF type have integral float chambers, on which the mixture is adjusted by turning a screw.
		SU carburetors are most fuel-efficient when slightly lean, and provide the most power when they are slightly rich.
		To test for this, spray some carburetor cleaner on the outside of the throttle shaft; carburetor cleaner is non-combustible, and if the engine speed drops, it means some of this is getting into the air stream from outside the carburetor.
	www.zhome.com /ZCMnL/tech/su.html (2574 words)

	Peco Exhaust System (Site not responding. Last check: 2007-11-04)
		The carburetors, manifold, and air cleaners as removed from the box of spares that came with the car....
		Carburetors were disassembled, cleaned, and new seals, gaskets, needle valve and seat, etc. installed.
		The SU's have not yet been installed as this is a work in progress.
	members.cox.net /mgbgt/sucarbs.htm (102 words)

	S.U. Carb Rebuild Parts: The Z Store
		Please call first if you are uncertain of your carburetors, or if you have never rebuilt 73-74 carburetors previously.
		Note: This is the center linkage between the two S.U. carburetors.
		If you are purchasing our remanufactured S.U. Carburetors, and have your original 70-72 carburetor cores complete with the old center linkage between them, there is no need to purchase this additional part.
	www.zcarparts.com /store/merchant.mvc?Screen=CTGY&Store_Code=TZS&Category_Code=SFC01B (167 words)

	British Automotive - Technical Information (MGB 19)
		While a very reliable carb/manifold set up, a disadvantage with this carburetor is the fact that the primary venturi accounts for two thirds of the throttle open position (no CFM* figures are given for this position) with the secondary venturi becoming active in the final one third of throttle movement.
		Carburetor can be modified to allow the primary and secondary throttle plates to open simultaneously plus modifications to the progression circuit and accelerator pump.
		Remember HS4/HIF4 SU carburetors, especially HIF4, are sensitive to ambient and coolant temperatures and really require some sort of heat exchanger or preheat device to assist in drivability problems during the engine "warm-up" period.
	www.mgbmga.com /tech/mgb19.htm (3284 words)

	SU HS6 Carburetor Needles (Site not responding. Last check: 2007-11-04)
		SU HS6 Carburetor Needles used on Volvo B18 and B20 engines.
		Replacing the needle in an SU carburetor with a thinner one will result in a richer fuel/air mixture.
		To purchase SU carburetor needles in the USA, call Joe Curto, 718-762-7878.
	home.earthlink.net /~goodspeeds/NEEDLES.HTM (83 words)

	MossMotors.com - Restoration Parts And Accessories For British Cars
		Carburetor Synchronizer is used to equalize the airflow between multiple carbs.
		SU Tool Kit includes an assortment of handy tools for the home mechanic.
		SU Jet Centering Tool is critical for older fixed needle carbs.
	www.mossmotors.com /Shop/ViewProducts.aspx?PlateIndexID=31160 (75 words)

	S.U. Carburetors, Rebuild Kits, Gaskets, Components, Mini Cooper MG Midget Austin Healey Sprite Triumph
		For info on pricing for APT to increase airflow and performance from your SU carburetors please refer to the listing and pricing for all our machine shop work.
		Also, don't forget that the best results we see with SU carbs is using them in conjunction with the fabricated intake manifolds which you can find details of in the "Intake" section of either 'A' or 'B' series engine parts.
		ST SU Carb, Throttle Plate For 1 1/4" SU SU Carb, Throttle Plate For 1 1/2" SU SU Carb, Throttle Plate For 1 3/4" SU "Gulp Valve" PCV Diaphragm
	www.aptfast.com /APT_Parts/SU_Parts/a_SU_components.htm (784 words)

	Chicagoland MG Club:Tech Tips
		After installing a rebuild 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.
		When properly assembled, only a thin line of cork (0.5 mm) will be visible between the carburetor body and the top edge of the aluminum cupped washer.
		Since the metal of the carburetor body is soft, do not, in your enthusiasm to squish the cork seal to its proper dimension, over-tighten the securing nut!
	www.chicagolandmgclub.com /techtips/general/548.html (273 words)

	fuelexh
		An SU needle is measured at a number of points (about 16) along its length, and it tapers from base to tip.
		Later SU carburetors of the HIF type have integral float chambers, on which the mixture is adjusted by turning a crew.
		At one time Haynes had an entire manual on SU carbs (as well as one on Zenith Strombergs, for the truly challenged) in addition there is (or was) a Haynes Manual devoted to the E-Type.
	www.jag-lovers.org /e-type/fuelexh.html (6911 words)

	Island Automotion LTD (Site not responding. Last check: 2007-11-04)
		Island Automotion rebuilds the famous SU (Skinner's Union) carburetors found on so many favourite classic cars, including the MG series like the MGA and MGB and MGC, and Triumphs like the TR-4 and Spitfire.
		In the 1960's the Zenith Stromberg carburetor was developed, in two basic sizes, the CD150 and the CD175.
		Of course in the early days of the SU carburetor, George and Carl Skinner used a leather bellows which deflected upwards with increasing airflow and decreasing pressure, and it could be argued that this design preceded the hydrin diaphragm of the Stromberg by many years.
	www.sucarburetors.com (370 words)

	Vintage Performance Developments
		Originally designed as an SU replacement performance carb for Harley Davidson motorcycles, it is a larger version of flat slide carbs used on smaller motorcycles.
		Carburetor development for automobiles stagnated more than 30 years ago when automotive manufacturers turned to fuel injection to meet emissions and fuel economy requirements, while at the same time, the evolution of carburetor design for motorcycles, snowmobiles and jet skis continued at a rapid pace.
		Compared to SU carbs, they are easier to tune because specific jets meter fuel for various throttle openings.
	www.v-performance.com /recent.html (3302 words)

	Restoration & service of MG, Triumph, Morgan & other British sports cars.
		Lawrie was also selected by Moss Motors to be the supplier of all their rebuilt SU carburetors.
		Moving parts are lubricated and all settings are made so that the carburetors will be able to be used as received, only final adjustments needing to be made once the car has reached operating temperature.
		The cost of carburetor rebuilding varies slightly from model to model and depends to some extent on what parts have to be replaced.
	www.britcars.com /rebuilts.html (324 words)

	The Wonderful World of SU Carburetors, by Hitachi
		This page is a collection of resources, links, and information to lead you to a better understanding of the SU carburetor.
		The accuracy of the data is low (see explanation) because of the limited information (and questionable accuracy) of the specs for Datsun SU needles.
		Another method of fine-tuning your SU carbs, especially with a modified motor, is changing the dome spring for a stiffer or softer spring.
	www.jetlink.net /~okayfine/su/sumain.html (737 words)

	V6.page
		The 604 used one single throat carburetor and one vacuum operated dual throat carburetor.
		The Volvo used a single SU carburetor which was soon followed by Bosch K-Jetronic fuel injection.
		The 504 V6 Coupe rally cars were highly modified and used 2 triple throat downdraught Weber carburetors to produce 240hp and 250Nm of torque.
	www.geocities.com /davemcbean/V6.html (465 words)

	TRIUMPH Owners \| LINKS LIST
		The SU carburetor was the brainchild of the late George Herbert Skinner, born 1872.
		SUSearch is an Excel worksheet that can be used by anyone who is trying to fine tune his car's performance by helping to select the best SU needle for his SU carburetor.
		Most of us are totally naive when it comes to really "tuning" SU carbs and their potential.
	www.triumphowners.com /links.cgi?sectionID=111010&parentID=111047 (219 words)

	Travels with Ree
		Upon inspection we saw that this was correct, that a retaining clip had failed, and that the jet had fallen out of the bottom of his lead carburetor.
		Running Ree's Bug-eye with one carburetor sucking only air risked burning up his exhaust valves which would mean rebuilding the top half of his engine, and consequently the end of our trip.
		Necessity being the mother of invention, we experimented with plugging up the defective carburetor, so that the two lead cylinders sucked cross-wise through the manifold, and were fed from the rear carburetor.
	condor.depaul.edu /~elliott/250/emotion.html (1694 words)

	Tuning FAQ's (Site not responding. Last check: 2007-11-04)
		Vacuum advance will be determined by the amount of vacuum present at the carburetor port.
		It could be carburetor balancing or advance related.
		I have never had problems with the stock SU float valves or floats.
	www.xke-lovers.com /tunefaq.htm (3765 words)

	Sequel to The Engine Rebuild (Site not responding. Last check: 2007-11-04)
		Well, IPD (the Oregon parts supplier) was right when they said it would need a richer mixture from the carburetors.
		Back at the house, I went out to the shed to look for my box of old SU carburetor parts.
		According to the Speedsport guide to tuning SU carbs, the KD needle is skinnier than the stock ZH needle by about a hundredth of an inch, which makes the fuel mixture for the KD quite a bit richer.
	home.earthlink.net /~goodspeeds/ENGINE2.HTM (554 words)

	SU Needle Database Initial Main Page
		Finding SU (Skinner Union) needles to make your car run right under all throttle conditions is a trying experience at best.
		Now you can go back in and fill in one, or as many as you like, station diameters and the database will return all the needles within that range.
		You can seach by station to compare what other needle is near that one.
	www.teglerizer.com /suneedledb (322 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		Produced with the cooperation of Holley Carburetors, Inc., this manual covers all operations of One, Two, Three and Four barrel carburetors.
		In-depth troubleshooting and carburetor tuning chapters are thorough enough to help anyone from a do-it-yourselfer to a professional.
		Also included is a Weber carburetor conversion chapter with detailed instructions for installing a kit onto a VW dual-port engine.
	www.haynes.com /na201.html (1260 words)

	MGCCWDCC/Tech-Tips (Site not responding. Last check: 2007-11-04)
		This is not a technical thesis on the SU carburetor, rather an attempt to supply some basic "no frills know-how" to help you regain a speaking relationship with your MG.
		The problem with your SU carburetors is often your Lucas distributor!
		In other words, before messing around with any of the foregoing adjustments, make sure your plugs and points are clean and gapped properly, your cap and rotor are in good condition, your wires are not corroded at their ends, and your timing is correct.
	www.mgcarclubdc.com /techtips/sucarbs.html (576 words)

	WinSU Carb Needle Finder Program
		This software will be useful to owners of cars equiped with SU carburettors (Austin, Triumph, Jaguar, MG, Rover, etc).
		For owners of cars equiped with single SU carb BL A-series engines (Mini, Metro, Austin 1100/1300, etc) WinSU will be able to suggest a suitable needle to use.
		Mini/metro owners with single SU carbs will be able to take advantage of the needle suggestion feature.
	www.beavispits.co.uk /winsu/winsu.html (1174 words)

	SU HS6 carburetor conversion - Car Forums and Automotive Chat
		I am attempting to put su hs6's on my 73 tr6.
		My question is in how to hook up the fuel lines.
		Do I run a fuel line from the second nipple to the back bowl, or is this second nipple used as a vent?
	www.automotiveforums.com /t349109-su_hs6_carburetor_conversion.html (108 words)

	Technical Articles Page - britishcarlinks.com
		Adjusting Your Carburetors - For both SU's and Zenith Stromberg carbs from the Vintage Triumph Register.
		The SU Carburetor Type H - Tuning, Adjusting and Servicing Instructions - Step by step instructions from BMC hosted at the TR Register of Australia website.
		SU Variable Choke Carburettors Explained - A very good discussion of SU type carburetor operating principles by Malcolm Land.
	www.britishcarlinks.com /technical_articles_page.htm (1369 words)

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