Jetting Keihin Slide Carburetors. As I have shared in earlier posts, I’ve had to learn about re-jetting the stock Keihin CVK carburetors used on the 2008 Hinckley Triumph Bonneville because I modified the air intake and exhaust system. Keihin type Pilot Jet N424-25b Select Size. Range. You can use our calculator to find the correct settings for your carburetor by simply entering your stock jetting configuration and desired elevation with temperature. It is beneficial to purchase a larger and smaller jet as the calculation is an approximation. Keihin Tuning Guide! How to use Jaguar's Jetting Calculator spreadsheet to perfect Keihin carb jetting. 2 Stroke Carburetor Adjustment Procedure For Off Road. Tuning and jetting the bike With the installation complete, you're ready to move onto jetting the bike. This may prevent the carburetor from functioning properly. Honda VF1100C Magna 1984-85 Ultimate $ 50.55. 1 Main Jet Size How To Get It Right Ryca Motors. Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting.com This calculating App enables you to evaluate a high pressure system from the high pressure pump through to the water jet nozzle. Don't do it yourself if you don't feel confident but let it be done by a professional mechanic. Warning: Featured are the PWK exploded views, just to let you understand where the tuning components are located. Height (L1) 1/4 to 1/2 throttle: n.a. To take full advantage of these performance modifications, the stock carbs need to be able to breath more freely to allow for extra airflow. These will not make you an expert tuner. Save 7%. Use needle table type N427-46 A. L1. The basic princi-ples work on all 2 stroke engines with a carb though. D. Calculation. Informer tous les congolais de la République Démocratique du Congo (RDC) dispersés à travers le monde Honda Touring Goldwing Patch. FOR EXAMPLE: We used Pro-calc to set up nozzles and jetting for 5 different fuel combinations, all confirmed in only 15 drag race test runs. Quick Jetting Guide for Mikuni and Keihin CV (carburetors with movable jet needles) The following tips and insights are for your information only. Honda GL1100 A I 1982-1983 Ultimate. Racers especially need to stay on top of the fuel/air ratio entering their dirt bike's carburetor to ensure optimum performance. The current values will be shown immediately and could be adjusted due to your specification via the +/- buttons. The procedures outlined here can be applied to both single and multiple carb applications. For calculation please enter the 3-digit needle code into the following boxes. Fuels that contain over 10% alcohol content may damage parts in the carburetors. Carburetor tools are also available as well as needle valves and assemblies, float bowl gaskets and o-rings. Many people are intimidated by carburetion jetting. Carb Type: Mikuni, Keihin (PJ, A/S, etc.) In fact, jetting your dirt bike is probably one of the most, if not the most dreaded part of maintenance. LAMBRETTA JETTING 2 This is a small guide to get the jetting of the carb on your Lambretta right. Carburetor Jet Size Calculator. Here is what we've come up for in our area and is a great starting point for you as well. Quick view. Choose the nearest jet sizes to this number, in this case 160. Jets R Us has a huge assortment of mikuni, keihin, hitachi and holley jets and jet kits, needles spark plugs and all jetting needs. Needle comparison: None. SIZE A B JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha Keihin carb jet size chart What is the drill sizes to open up a Keihin jet to Keihin sizes #70 and #72? Check out our guide to carburetor jetting adjustments here. We developed these specs with a 32:1 fuel to oil mixing ratio of a 50/50 mix of race fuel and super unleaded, 0 - 1500 ft altitude at 70 degrees outside temperature. An electronic micrometer is a better measuring device, it can get that third digit. have determined the correct jetting for your engine make a note of the temperature and altitude of your location at that time. A Simple Guide To Jetting Your Carb MotoSport. Unfortunately, it's not something to deal with later and keep putting off. Keihin type Pilot Jet N424-26 Select Size . But I Just Wondering,If You Can Give Me A Better Setting.. Jetting formula (cf x jet size = new jet size) CF = 1.0778-.00111*T + (2.38554*10^-10)*A^2 -(1.0777*10^-5)*A T is temperature in degrees F A is altitude in feet If you plug in A=0 and T=70 you get CF=1. Carburetor Jet Size Calculator. Any major engine modifications like higher compression pistons and racing exhaust systems may require minor jetting adjustments. 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