Callum wrote:Richied, Yes, the engine is 1998. Can you explain what problems there are with the carbs?
Well for a start you either have to dry sum the engine or devise a way of stopping the oil sloshing around. This isnt (such a bad) problem on the RVF's V4 as its narrow and the oil doesnt shift over into the far right or left cylinders as much. The problem carbs cause is in the set up. Not only can you bugger the whole lot up with a simple messing around with a screw driver but you can also find that a setting in static is perfect for peek power yet when you get going, with the lateral motion, that the outer pistons lean/rich as you go round corners. I found that when i put my bike engine in a car the problem was under heavy breaking/aceleration the floats in the carbs would jam up. eventually flooding the engine. This was most probably cause by the agressive angle on placement in the chassis though to be honest. With injector engines this problem is practicaly gone as each piston is fed the right amount at the right time. One rule of thumb i go by is that you have to remember in a corner all the fluids go down on a bike and you have to compensate for this and that try to position the engine at the same angle of stroke as it would have done in the bike.
My friend has a 1998 cbr and the biggest gains are through good exhaust flow by the way. Also if its come from an old bike make sure the clutch is in good condition before you start fitting it. My friend gained 3hp alone in the drivetrain by fitting a new clutch, chain and sprokets as his was getting old
