|
CARBURETOR RE-JETTING PLAIN AND SIMPLE, CARBURETOR RE-JETTING IS TO ACHIEVE THE MAXIMUM RATIO BETWEEN FUEL AND AIR. THIS MAXIMUM RATIO IS THE SAME FOR ALL GASOLINE ENGINES. IF THIS RATIO IS TOO-MUCH OR TOO-LITTLE, THE ENGINE WILL RUN ERRATICALLY. IF THE ENGINE IS RUNNING LEAN, IT IS GETTING TOO MUCH AIR FOR THE AMOUNT OF FUEL PRESENT. IF THE ENGINE IS RUNNING RICH, IT IS GETTING TOO MUCH FUEL FOR THE AIR PRESENT. THE SPARK PLUG IS A WAY OF ROUGHLY DETERMINING WHICH IS WHAT. IDEALLY, THE SPARK PLUG IS A CHOCOLATE-MILK-COLOR. IF YOU ARE RUNNING LEAN, THE COLOR RANGES FROM LIGHT CHOCOLATE MILK COLOR TO VERY LIGHT CHOCOLATE MILK COLOR. IF YOU ARE RUNNING RICH, THE COLOR RANGES FROM DARK CHOCOLATE MILK COLOR TO DARK SMOKE-BLACK. THIS READING MUST BE TAKEN AFTER THE ENGINE HAS WARMED UP AND THE THROTTLE HELD AT STEAD AT ABOUT 4000~5000 RMP FOR AT LEAST 15 SECONDS. THE KILL BUTTON IS PRESSED AND THE ENGINE COMES TO A COMPLETE STOP---AND THE SPARK PLUG IS REMOVED FOR THE READING. YOU CAN DO THE SAME WITH THE MOTORCYCLE-ATV-ENGINE ON THE ROAD-TRACK-TRAIL. ANOTHER WAY OF DETERMINING THIS MAXIMUM RATIO IS TO BUY AN AIR-FUEL MONITOR. THIS SENSOR-GAUGE SET UP CAN BE PERMANENTLY INSTALLED OR IT CAN BE USED ON SEVERAL MOTORS BY SIMPLY WELDING AN EXTRA FLANGE TO YOUR EXHAUST SYSTEM. THEN YOU USE THE GAUGE FOR EACH MOTOR SETUP. IT IS A MYTH THAT MORE GAS EQUALS MORE POWER. YOU DON'T GET MORE POWER FROM SIMPLY UPPING THE AMOUNT OF GAS TO THE ENGINE. THE MORE GAS, THE MORE RATIO-ED AIR YOU NEED. MOST OEM SETUPS--OUT OF THE CRATE--ARE JETTED ON THE RICH SIDE. THAT IS TO ASSURE THAT THE MOTOR IS LESS LIKELY TO FAIL BECAUSE OF A LEAN MIXTURE. WHEN PEOPLE PUT ON EXHAUST HEADERS, WITHOUT CHANGING THE STOCK JETS--THEY ARE LIKELY TO FIND THAT THE ENGINE RUNS BETTER---BECAUSE THE FUEL-AIR MIXTURE IS OPTIMIZED BECAUSE OF THE INCREASES INTAKE AND EXHAUST OUTPUT. YOU DO NOT NECESSARILY HAVE TO RE-JET WITH NEW EXHAUSTS. MORE GAS REQUIRES MORE AIR FOR POWER INCREASES.
|
|
----------------------------------------------------------------------------------------- GO TO LAWS PERTAINING TO FRAUDS AND SWINDLES YOU MAY USE THE STANDARD (PRE-ORDER PAGE) PAGE (FOR THOSE PAGES WITHOUT OR YOU MAY USE THE SHOPPING CART (SC) (ONLY ON PAGES THAT HAVE A SHOPPING CART) BY CLICKING ON "ADD TO ORDER" |