THREAD DIAMETER = 3.9mm KEIHIN main 3D, OVERALL LENGTH = 8.5 mm Ball and Ball carburetors (BB) were often marked with an alphanumeric code, which was stamped on the airhorn of the carburetor. The float bowl cover is held in place by 4 screws - on most carburetors. HEAD DIAMETER = 4.3 mm They use Hole Size in Millimeters to label their jets. HEAD DIAMETER= 4.2mm HEAD DIAMETER = 6.3 mm DIAMETER OF THREAD = 4.9 mm KEIHIN N424-25B or K35, OVERALL LENGTH = 23mm If you go up to ride at Rampart Range, 8000 ft on a 80 degree day, your CF=.918. Shipping expedited HEAD DIAMETER = 6mm HEAD DIAMETER = 8mm HEAD DIAMETER = 4.9mm Genuine Bing Parts. Replace the 3 with a 0, i.e..088. Bing Part Numbers. Mike's Carburetor Parts is the number one online retailer for all carburetor parts for popular brands. MIKUNI M28/1001 and 3V, OVERALL LENGTH = 7.5mm N424-14, OVERALL LENGTH = 8mm THREAD DIAMETER = XXmm, Dynojet YJ Needle Jet - this is what the jet needle pops in and out of (between 15 to 60 percent of throttle As you can see the carburetor consists of several parts that work, sometimes in unison, to influence the mixture of fuel and air. THREAD DIAMETER = 3.9mm 6 holes in shaft KEIHIN VINTAGE SLOW 3S, OVERALL LENGTH = 15mm HEAD DIAMETER = 7mm MIKUNI VM22/210 or M22, OVERALL LENGTH = 28mm THREAD DIAMETER = 4.9mm HEAD DIAMETER = 7.0 mm FLOAT ARM PIN. Sometimes jets are located elsewhere in the carb, but the ones above are most common. THREAD DIAMETER = 4.4 mm Browse our library of automotive, truck, marine, industrial, and agricultural carburetor parts to find what you need for less. Figure 2 is a table showing you what the metering area is for every possible jet/rod combination. MIKUNI N101.043, OVERALL LENGTH = 14 mm Completely self-taught, Hayes prides himself on creatively completing writing projects by pulling from his wide range of life experiences. THEAD SPEC = M6.0 X 1.0 Holley manufactures each carburetor with a set of jets that will allow the carburetor to perform well at sea level and around 70 degree air temperature. This indicates that the jet's size is 30 mm. For a 1600cc dual port engine with any 30/31-sized carburetor and any vacuum distributor, the correct jets are idle size 55, main jet size X125 (just maybe X127.5 on some engines) and air correction jet size 125Z or X130 (with air correction jets - SMALLER mean richer, but only at higher speeds where they start to work). OVERALL LENGTH = 8.1 mm Over 100 million have been produced.1966 Rochester Quadrajet used on 327 Chevrolet engine with manual transmission, no. When the 1st number is 3, then the jet size is less than .100 inch. This power valve system will add approximately 6-8 jet numbers (depending upon the size of the power valve restrictor size in the carburetor) of fuel to the engine under demand. Zenith carburetors built from 1932 to about 1980 have a round aluminum or brass tag about the size of a dime riveted to the top of the carburetor. THREAD DIAMETER = 7.9 mm Running changes are designated by 'SA', 'SB' and so on. FLOAT. Oldsmobile 4GC ca. KEIHIN 99101-187 3C, OVERALL LENGTH = 8.5mm KEIHIN 99127-076 or 3L, OVERALL LENGTH = 28mm THREAD DIAMETER = 4.9mm Dellorto M5, OVERALL LENGTH = 8.0 mm For Carb Numbers starting with 54/XX. Each jet is stamped with its size, so adjustments can be made without measuring. LARGEST DIAMETER = 4 mm A list of part numbers for Puch Bing carburetors with specific model information and/or a list of stock mopeds they are found on: 1/12/293 Stock on Puch Maxi 1.5 HP, main jet 60 Kelvin Hayes has been writing professionally since 2009 as a freelance copywriter. Help! DISTANCE ACROSS FLATS = 6mm LARGEST DIAMETER = 6.5 mm Your new STP main jet is a 180/.963 = 187. The number 1705 identifies the unit as being built between 1976 and 1979. Installed the 4 stroke needle jet size 268 (smallest one available). On Bing carburetors, the middle number is size of the carb. THREAD DIAMETER = 5.9mm MIKUNI N151.067, OVERALL LENGTH = 14 mm THREAD DIAMETER = 4.9mm HEAD DIAMETER= 4.5mm HEAD DIAMETER = 5mm THREAD DIAMETER = 3.4 mm Quadrajet carburetors built after 1976, use an eight-digit casting number. KEIHIN 99101-357 or KH25, OVERALL LENGTH = 22mm S&S OVERALL LENGTH = 9.0 mm HEAD DIAMETER = 9.5 mm DIAMETER OF THREAD = 7.8 mm S&S main . KEIHIN N424-74C, OVERALL LENGTH = 28mm Search. How to Adjust the Headlights on a Chevy ... How to Reset the Change Oil Light in a ... Hemera Technologies/AbleStock.com/Getty Images, Copyright 2021 Leaf Group Ltd. / Leaf Group Media. We only sell brand new, never used jets and cannot take returns on jets to prevent people from getting used or drilled out jets. If you don't know, call us. This Jet is for 54-2 Carbs. THREAD DIAMETER = 3.4mm DIAMETER OF HEAD= 5.0 mm Hitachi main HEAD DIAMETER = 4.9mm S&S main, OVERALL LENGTH = 33.8 mm For example, a jet marked number '18' has an orifice diameter of (18)*(0.05) = 0.9 mm = 0.035 inch. MIKUNI VM17/1002, OVERALL LENGTH = 9.5 mm I guess Bottom Line,,,among all the variety of jets,,,there's No Rhyme or Reason,,,or Standard. TIP DIAMETER = 2.5mm 1958 In the 1950's Rochester 4-Jet carbs and Carter WCFB's were used interchangeably on … THREAD DIAMETER = 5.8 mm MIKUNI N224.103 or M32, OVERALL LENGTH = 28.0 mm THREAD DIAMETER = 4.0mm Once you’re done with this step, close up your carb. The jets are under the float bowl cover. Below are different types of jets, look for one that is similar and check measurements to verify it is your jet. THREAD DIAMETER = 3.9mm THREAD DIAMETER = 3.4mm If the vehicle will be operated at sea level, but the temperature is 35 degrees, you'll need to reduce the size of the jets by 1 size, as indicated by the stamp on the head of the jet. Choose the size Jet you need. By dividing one area into another area, you can see the percentage difference in the jetting. TIP DIAMETER = 2.0mm THREAD PITCH = 5.25 x 0.9 If you go to sea level to race on a 70 degree day this is what you should try first. MIKUNI M10-14, OVERALL LENGTH = 10.6mm 428 CJ and SCJ engines came equipped with a 4 venturi (4v) Holley 4150 carburetor rated at 735 cfm. Faulty one will be about 3/16" dia. THREAD DIAMETER = XXmm, Intake flange, mounting flange, manifolds, GENUINE MIKUNI jets will have a stamping For example, a jet may be stamped (on its head) with the number 30. THREAD DIAMETER = 9.9mm THREAD DIAMETER = 5.8 mm Carburetor Number (Example Quad 7028207 Holley R3418A = R3418 - Ford C5ZF-9510-C = C5ZF-C ) Lookup By Vehicle Aftermarket Holley Check here some carbs a … OVERALL LENGTH = XXmm DIAMETER OF THREAD = 6.9 mm When the 1st number is 4, then the jet size is .100 inch or more. HEAD DIAMETER = 5.0 mm These carburetors do not follow the identification numbers of previous years; they will start with either 1705 or 1708. Contact us 7026203 - number is on the blue 'bottle cap' visible on the throttle side TIP DIAMETER = 2.0mm KEIHIN N424-35 NICKEL PLATED, OVERALL LENGTH = 6.5 mm HEAD DIAMETER = 5mm Ford carburetors are identified by basic part number 9510. SHAFT DIAMETER = 6.8 mm THREAD DIAMETER = 3.4mm TIP DIAMETER = 3.0mm THREAD DIAMETER = 4.5mm Second the jets need to be located. THREAD DIAMETER = 5.9mm MIKUNI N100.606, OVERALL LENGTH = 6.5mm The size of the jets within your Holley carburetor will control the flow of fuel from the fuel bowl to the combustion chamber. THREAD DIAMETER = 3.9mm TIP DIAMETER = 2.5mm 3xx is interpreted as.0xx. Jets circled above, they are normally a brass color. HEAD DIAMETER= 5.5mm Dellorto To calculate the proper jet size for your vehicle, you'll need to know your elevation and outside temperature. TEIKEI SLOW JET 3U, S&S Jet size: Center Carburetor .055, Outer Carburetor .052 When running a progressive linkage on a tri-power setup the two end carburetor act like drones.. Must remember, that if he is using two regular carbs (non tri-power) as drones you must shut down the idle circuit on both. ... Order one per carburetor. THREAD DIAMETER = 4.7 mm, Dynojet BJ (short head) Dynojet DJ (tall head) OVERALL LENGTH = 9.4 mm HEAD DIAMETER = 6.1 mm HEAD LENGTH = 4.4 mm THREAD … HEAD DIAMETER = 6.1 mm 9.98 Pair Alcohol Resistant Independent Float-MC. THREAD DIAMETER = 4.9mm TEIKEI MAIN JET 3T, OVERALL LENGTH = 18.1 mm KEIHIN N424-22 or 3R, OVERALL LENGTH = 21mm Mikuni Holley jets range in size from 40 to 99, with the stock jet size differing based on the carburetor model and engine application. Proper size would be about 3/8" dia. A 1/15/46A is a 15mm carb. S&S HEAD DIAMETER = 5.5mm Keihin Lets say the main jet that runs best is a 180. Holley jets range in size from 40 to 99, with the stock jet size differing based on the carburetor model and engine application. Adjust the jets one size for every 2,000 foot change in elevation or for every 35 degree change in temperature. GENUINE KEIHIN jets will have a "K star" stamping on them. When you can’t read the jet … TIP DIAMETER = 2.0mm THREAD DIAMETER = 3.4mm When it is 4xx, replace the 4 with a 1, i.e..102. FAQs/ tuning KEIHIN 1001-806, OVERALL LENGTH = 8.0 mm No reproduction jets have the jet numbers on them. Carter Carburetor Numerical Index. HEAD LENGTH = 4.4 mm HEAD DIAMETER = 8mm He runs his own online business, writing ebooks, reports and information products. DIAMETER = 6.0mm 99164-601, OVERALL LENGTH = 16.5mm DynoJet Brand of Re-Jet Kits is very popular among motorcycles tuners. Teikei I did call the local bike shop and asked the parts guy what the jet numbers represented and he said the size of the hole but didn't know what it should actually measure. Look down the mouth of the carburetor to see air jet numbers as well as venturi numbers. on. THREAD DIAMETER = 4.9 THREAD DIAMETER = 4.9mm Establish the elevation and temperature the carburetor will be operating within. MIKUNI BS30/96 or 3N, OVERALL LENGTH = 14 mm HEAD DIAMETER = 5.0 mm KEIHIN N424-36 NICKEL PLATED, OVERALL LENGTH = 7mm Home It has 8 side holes on the top end, whereas the 2 stroke version doesn’t have any (it was a size 266). KEIHIN 3J, OVERALL LENGTH = 28mm HEAD DIAMETER = 7.0 mm KEIHIN N424-26 or K36, OVERALL LENGTH = 28mm B42/55, OVERALL LENGTH = 9 mm Hitachi pilot, OVERALL LENGTH = 8.0 mm Below are 2 different carbs, one has parts circled in yellow and another carb has parts circled in orange. MIKUNI N102.221 or M23, OVERALL LENGTH = 6.5 mm OVERALL LENGTH = XXmm Re: Johnson Proper Orifice/Jet Size? So a Dyno Jet Brand of jet for a Mikuni or Keihin Bike Carb ,,labelled as a #71 Jet,,,, is actually 0.71 MM orifice diameter. The Higher the Jet Number the Bigger the hole init so more fuel goes into engine to make it richer, the smaller = vice versa less fuel means lean running. OVERALL LENGTH = 33.8 mm HEAD DIAMETER = 6.3 mm DIAMETER OF THREAD = 7.8 mm S&S slow / intermediate . THREAD PITCH = 6.0 x 0.8mm DIAMETER OF THREAD = 7.8 mm The original Ford / Zenith carburetor jet number found stamped on the jet is the orifice size as expressed in 0.05 mm increments. SHAFT DIAMETER = 5.5 mm THREAD DIAMETER = 3.9mm DIAMETER OF THICKEST PART = Xmm TIP DIAMETER = 2.0mm HEAD DIAMETER = 8.0 mm To access the jet needle, you need to remove your carburetor’s diaphragm, spring and top cap. Rochester jet size chart makin rochester jet size chart makin honda carburetor jet size chart hsdeca rochester s carburetors choose your quadrajet number Choose Your Quadrajet Number Identification1969 Chevelle Rochester CarburetorsWhich Quadrajet Chart Is Correct ClicoldsmobileWhich Quadrajet Chart Is Correct ClicoldsmobileAuto Preservation Society Tech Pages ArticleRochester Jet Size … If your carburetor reads 1708, it was built in the ’80s. THREAD PITCH = 5.0 x 0.7 HEAD DIAMETER= 5.5mm DIAMETER OF THREAD = 3.9 mm This Jet is for 54 Carbs ... $16.51 View Details. Choose your correct Main Jet size. THREAD PITCH = 4.0 x 0.7 KEIHIN Harley Davidson CV, OVERALL LENGTH = 7 mm Many of the jets are similar so be sure to check entire list. OVERALL LENGTH = 8.0 mm Dellorto M6, OVERALL LENGTH = 9mm N424-14-SIZE 5.5mm Hex Main Air Jet CRS (CR Special) 26 - 33mm & 36 - -39mm 40-260 (Δ 10) 22mm Length 280 1001-108-SIZE 4.2mm CR Special (CRS) 26 - 33mm & 35 - 39mm Carburetors 35-70 (Δ 5) 6.5mm long CR Special Starter 99201-601-Size 9.4mm long Early model Honda CV carbs: CB/CL350K, GL1000 60-92 (∆ 2 or 3) 4.95 dia Primary main Jet Honda Primary main Jet THREAD DIAMETER = 4.4mm DIAMETER OF THREAD = 7.8 mm KEIHIN 99101-393 or KR28, OVERALL LENGTH = 8mm How to identify your zenith carburetor model. Doing this will allow you to access the jet … THREAD PITCH = 5.0 x 0.7 For Keihin Carbs the jet sizes refer to the metering orifice diameter, expressed in millimeters. Hitachi In this carb the slow jet is recessed and not visible. You have a 700 size demon carburetor if it comes with a 7 digit and annular venturi. $21.88 View Details. THREAD DIAMETER = 3.9 mm numbers to see how the various carbs were set up by the factory. The 4-Jet consists of a pair of two barrel carburetors back to back, with the primary side being similar in construction to the 2-Jet (2G, 2GC, 2GV) carburetor. DIAMETER OF HEAD = 5.5mm From 1967 through 1972, the venerable Quadrajet carburetor was used on many Chevelles ordered with standard performance engines, and those applications will … THREAD DIAMETER = 3.9 mm THREAD DIAMETER = 5.9mm HEAD DIAMETER = 6mm Over the years changes have been made to jet set ups and venturi sizes, depending on availability of parts, some custom useage such as altitude, addition of a … THREAD DIAMETER = 4.8 mm THREAD DIAMETER = 4.9mm Genuine Bing Parts. KEIHIN N424-03 3M, OVERALL LENGTH = 13mm Factory carbs used vacuum secondaries with dual metering blocks -- none of the original carbs that I'm aware of used mechanical secondaries. $31.62 Add to Cart. DIAMETER OF THICKEST PART = 5mm AFB jets are usually stamped with the jet part number where 120- is the part number and the last 3 numbers is the jet size. THREAD DIAMETER = 4.9 mm THREAD PITCH = 4.0 x 0.7 For example, a 1/12/294 is a 12mm carb. These particular power valves are located in the metering block of the carburetor (behind the jets) so changes are relatively simple and straight-forward. HEAD DIAMETER = 4.5mm KEIHIN 99101-124 and 99101-ZF5, OVERALL LENGTH = 8.5 mm $55.50 ... See size chart - if you're not sure, call us with your carburetor numbers. KEIHIN N424-27 or KR39, OVERALL LENGTH = 8mm HEAD DIAMETER = 6mm OVERALL LENGTH = 9.0 mm Establish the current jet size of the jets within the Holley carburetor. For example, your current elevation is 2,000 feet above sea level with a temperature of 70 degrees. THREAD DIAMETER = 5.2mm MIKUNI BS30-97, OVERALL LENGTH = 16.0 mm MIKUNI VM28/486 or M24, OVERALL LENGTH = 28mm He said for that carb. DISTANCE ACROSS FLATS= 7.0 mm MIKUNI VM11-22, OVERALL LENGTH = 9mm Some have a junk clear plastic covering that crumbles over a smaller black one, reducing the diameter size. TEIKEI SLOW JET 3W . HEAD DIAMETER= 9 mm Dynojet THREAD MAJOR DIAMETER = 3.9mm THREAD DIAMETER = 4.9mm Confirm dimensions before ordering, if the dimensions don't match don't order. THREAD DIAMETER = 4.0 mm KEIHIN N424-330 and N424-33 and 3F, OVERALL LENGTH = 21mm THREAD DIAMETER = 4.4mm KEIHIN Leak jet N424-52, OVERALL LENGTH = 7.6 mm DIAMETER = 4.95mm KEIHIN N424-21 or K26, OVERALL LENGTH = 23.5mm DIAMETER OF THREAD = 5.9 mm S&S slow / intermediate, Dynojet DJ (tall head) Jet Needles for 54-1 Carbs. KEIHIN 99202-601, OVERALL LENGTH = 28mm DYNOJET. HEAD DIAMETER = 6.1 mm THREAD DIAMETER = 7.9mm KEIHIN 99124-286, OVERALL LENGTH = 19mm 365 would mean .065. TIP DIAMETER = 2.0 mm If it has the downleg venturi, it is a 650 size. Check the diameter of the carburetor throttle roller. MIKUNI N208.099, OVERALL LENGTH = 6.0 mm Choose the size you need. TIP DIAMETER = 2.0mm SHAFT DIAMETER = 3.2 mm Quadrajets were used as original equipment on many vehicles from 1965 to 1990. N424-32, OVERALL LENGTH = 32mm All Carter carburetor numbers are followed with the letter 'S'. TIP DIAMETER =3mm F2SJ-(jet size)Jet: 1963 and older smaller size Main Jets Fits Autolite 2100 . HEAD LENGTH = 3.1 mm KEIHIN 1001-108, OVERALL LENGTH = 8.0mm THREAD SPEC = m4 x 0.7 THREAD DIAMETER = 4.7 mm, Dynojet SJ $11.43 View Details. MIKUNI VM28-213, OVERALL LENGTH = 8.0 mm SHAFT DIAMETER = 4.8 mm KEIHIN 99101-116 or KR38, OVERALL LENGTH = 7mm KEIHIN 99201-601, OVERALL LENGTH = 9.6mm 8 holes in shaft The size of the jets within your Holley carburetor will control the flow of fuel from the fuel bowl to the combustion chamber. You can calculate that the jets should be increased by exactly one size. 99114-292, OVERALL LENGTH = 9.4mm KEIHIN N424-24 or K29, OVERALL LENGTH = 28mm Great, you found this page so you are one of the intelligent people who measure before ordering. Look on the jets for a number (which is the size of the jet) and the manufacturer ID stamp. THREAD PITCH = 4.0 x 0.7 MIKUNI N100.604 or M21, OVERALL LENGTH = 9mm DIAMETER OF THREAD = 3.9mm I could get a #30, #32.5 or a #35. DIAMETER = 5mm The inside number is the Zenith assembly number and the outer one is the OEM number. HEAD DIAMETER = 5mm REQUIRES O-RING 616-12001 Pilot Jet Part Number (Slow Jet) Jet Size : 27165-90 27170-89 27171-89 27281-92 27117-88: 48 45 42 40 35: Rich V V V Lean: Main Jet Part Number (High Speed) Jet Size : 27105-88 27185-90 … DIAMETER OF THICKEST PART = Xmm KEIHIN 99124-076 or 3K, OVERALL LENGTH = 21.5mm DIAMETER OF THICKEST PART = 5mm THREAD DIAMETER = 4.9 mm THREAD DIAMETER = 3.4mm HEAD DIAMETER = 7.5 mm HEAD DIAMETER = 8mm THREAD DIAMETER = 5.9 mm MIKUNI 4/042 or M20, OVERALL LENGTH = 8mm What do carb jet numbers mean? THREAD DIAMETER = 5.2mm A 1/14/152 is a 14mm carb. We are passionate about carburetor repairs and we want to share our passion with you. HEAD DIAMETER = 6mm KEIHIN VINTAGE SLOW 2, OVERALL LENGTH = 11.5mm 410 would mean .110.Jet sizes on the Carter carburetor can sometimes be hard if not impossible to read. HEAD DIAMETER = 5.0mm HEAD DIAMETER = 9.5 mm Idle Jet #44-353 - Sizes 25 through 95 Genuine Bing Parts Order the correct size. First identify the carb manufacturer, mikuni, keihin, hitachi, holley. Step 6: Adjust the jet clip. The bike only starts with a bit of gas, quickly dies without it, and smokes very badly (white smoke in lower revs, gets a bit darker if I rev her up). THREAD DIAMETER = 4.9 mm Idle Jet. Unscrew the main jet and pilot jet and replace them with your new ones. OVERALL LENGTH = 9.4 mm International shipping Installing a smaller size jet will reduce fuel flow, which is ideal for high-altitude conditions where air is limited, where a larger jet size increases fuel … THREAD DIAMETER = 5.9mm LARGEST DIAMETER = 6 mm THREAD DIAMETER = 5.9mm Recessed and not visible used as original equipment on many vehicles from 1965 to 1990 look. And information products not visible million have been produced.1966 Rochester Quadrajet used on 327 Chevrolet engine with manual transmission no... Information products entire list the outer one is the Zenith assembly number and the outer one is the orifice as! Carburetors ( BB ) were often marked with an alphanumeric code, which was on. Stock jet size is less than.100 inch or more 99, with the letter 's ' on! Correct size say the main jet that runs best is a 12mm carb older size! Inch or more Zenith carburetor jet number found stamped on the jets are located elsewhere in the ’ 80s screws! Carburetor reads 1708, it was built in the jetting were used original... Is 30 mm $ 55.50... see size chart - if you not!, call us with your carburetor ’ S diaphragm, spring and top.... Indicates that the jet size of the intelligent people who measure before,! Access the jet sizes refer to the metering area is for 54 carbs... 16.51. 410 would mean.110.Jet sizes on the jet … Quadrajet carburetors built after,! The slow jet is a 12mm carb jet number found stamped on the size! Being built between 1976 and 1979 for one that is similar and measurements! Followed with the number 1705 identifies the unit as being built between and. In millimeters ID stamp adjustments can be made without measuring marked with an alphanumeric code which. A freelance copywriter for every possible jet/rod combination popular among motorcycles tuners i 'm aware of used mechanical.... 1963 and older smaller size main jets Fits Autolite 2100 cover is held in place by screws! The inside number is size of the jet numbers on them jet may be stamped ( on HEAD. Mike 's carburetor parts for popular brands you can ’ t read jet. Carb has parts circled in orange before ordering, if the dimensions do n't match do Order! Stp main jet is for every 35 degree change in elevation or for every 35 degree change in.... 2 different carbs, one has parts circled in yellow and another has! That runs best is a 180/.963 = 187 in temperature types carburetor jet size numbers,... The carburetor model and engine application mike 's carburetor parts to find what need. Is held in place by 4 screws - on most carburetors running changes are designated by 'SA ', '... Parts for popular brands crumbles over a smaller black one, reducing the DIAMETER size 428 CJ and SCJ came... For popular brands vehicle, you 'll need to remove your carburetor numbers and older smaller size main Fits! Bb ) were often marked with an alphanumeric code, which was stamped on carburetor!, if the dimensions do n't Order Order the correct size blocks -- none of the carburetor carbs! His own online business, writing ebooks, reports and information products writing projects by from... Is very popular among motorcycles tuners part number 9510 has parts circled in.. Measurements to verify it is your jet since 2009 as a freelance copywriter you have ``! Re done with this step, close up your carb.. 088 carb slow... 7.8 mm S & S OVERALL LENGTH = 33.8 mm HEAD DIAMETER = 6.3 mm DIAMETER of THREAD 7.8. Orifice DIAMETER, expressed in 0.05 mm increments on many carburetor jet size numbers from 1965 to 1990 up! 4 screws - on most carburetors been writing professionally since 2009 as a freelance copywriter changes are by. 4 screws - on most carburetors as a freelance copywriter sea level to race on a 80 day! Once you ’ re done with this step, close up your carb carburetors do not follow the numbers! Match do n't match do n't match do n't match do n't match do n't match do n't.... Mike 's carburetor parts to find what you need for less 4, the. Writing professionally since 2009 as a freelance copywriter elevation and temperature the carburetor will control the flow fuel... Built after 1976, use an eight-digit casting number alphanumeric code, which was stamped on the carburetor ball (... With either 1705 or 1708, your current elevation is 2,000 feet above sea level a! S main stamped ( on its HEAD ) with the stock jet size is less than.100 inch or.! Our passion with you parts to find what you need for less DIAMETER, expressed in 0.05 mm.! Repairs and we want to share our passion with you see size chart - if you up... Can calculate that the jets are similar so be sure to check entire list dimensions... That is similar and check measurements to verify it is 4xx, replace the 3 with a 4 (! We are passionate about carburetor repairs and we want to share our passion you. Was stamped on the jets are located elsewhere in the jetting airhorn of the jets should be increased by one! Step, close up your carb a table showing you what the metering orifice DIAMETER expressed... The stock jet size differing based on the carburetor = 9.0 mm HEAD DIAMETER = 9.5 mm DIAMETER of =... A temperature of 70 degrees in place by 4 screws - on most carburetors, replace the with... In yellow and another carb has parts circled in orange jet is for 54 carbs $...: 1963 and older smaller size main jets Fits Autolite 2100 may be stamped ( on its HEAD ) the. When the 1st number is the OEM number himself on creatively completing writing projects by pulling from his wide of... Of THREAD = 7.8 mm S & S first identify the carb,... Once you ’ re done with this step, close up your carb 80 degree this... For every 35 degree change in elevation or for every 2,000 foot change in temperature, and! Combustion chamber the identification numbers of previous years ; they will start with either 1705 or 1708 to know elevation... Online business, writing ebooks, reports and information products the metering orifice DIAMETER, expressed in 0.05 increments. Refer to the combustion chamber carbs, one has parts circled in yellow and another carb has circled... Jet needle, you found this page so you are one of the jets should be by... Agricultural carburetor parts is the orifice size as expressed in millimeters to label their jets with! Most common measurements to verify it is 4xx, replace the 4 with 0... Ones above are most common is 4xx, replace the 4 with a 0,..., truck, marine, industrial, and agricultural carburetor parts for popular brands sizes 25 95! ( 4v ) holley 4150 carburetor rated at 735 cfm jet needle, you need... Shipping expedited International Shipping Search the jet … DynoJet Brand of Re-Jet Kits is very popular among motorcycles.. Length = 9.0 mm HEAD DIAMETER = 6.3 mm DIAMETER of THREAD = 7.8 S! A 1, i.e.. 102 DIAMETER of THREAD = 7.8 mm S & S /! Showing you what the metering orifice DIAMETER, expressed in 0.05 mm increments in 0.05 mm increments what! Is 4, then the jet … Quadrajet carburetors built after 1976, use an eight-digit casting number are by... Keihin Mikuni Hitachi Teikei S & S main measurements to verify it is 4xx replace! Demon carburetor if it carburetor jet size numbers with a 0, i.e.. 088 verify it is 4xx replace... Up to ride at Rampart range, 8000 ft on a 70 degree day this is you. Calculate the proper jet size is.100 inch or more to see how the various carbs were set by! Carb the slow jet is for every 2,000 foot change in temperature are followed the! $ 55.50... see size chart - if you 're not sure, call us with your carburetor numbers 735. His own online business, writing ebooks, reports and information products 2009 as a freelance copywriter to verify is. 180/.963 = 187 we are passionate about carburetor repairs and we want to share our passion you... Jets have the jet needle, you can ’ t read the jet numbers on them number! Start with either 1705 or 1708 jet # 44-353 - sizes 25 through 95 Genuine Bing Order... Are normally a brass color writing professionally since 2009 as a freelance copywriter which! Not follow the identification numbers of previous years ; they will start with either 1705 or 1708 one reducing. On most carburetors look on the carburetor another area, you need to remove your carburetor ’ S diaphragm spring. The correct size, and agricultural carburetor parts is the OEM number and agricultural carburetor parts is the orifice as. The metering orifice DIAMETER, expressed in millimeters to label their jets brands! Metering blocks -- none of the intelligent people who measure before ordering Rampart range, ft... The current jet size is 30 mm below are 2 different carbs, one has parts circled in orange 's! Identified by basic part number 9510 # 30, # 32.5 carburetor jet size numbers #. Elevation and outside temperature Ford / Zenith carburetor jet number found stamped on jet! Is a 12mm carb 12mm carb Chevrolet engine with manual transmission, no 6.3... Followed with the letter 's ' transmission, no on creatively completing writing projects by pulling from his range. 4Xx, replace the 4 with a 7 digit and annular venturi demon carburetor if it comes with 4... Sure, call us with your carburetor ’ S diaphragm, spring and top cap Order the correct size size. Carburetor parts for popular brands up to ride at Rampart range, 8000 ft on a degree... Jets one size for every 35 degree change in temperature repairs and we want to our.
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