Hitting rev limiter in fifth at top speed
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I don't know why it's doing that. A stock 300ex is geared 13/38 with 22 inches tires and it's never going to hit the limiter in 5th
BTW, since people are reading this topic, check my 300EX DRAG RACING QUESTION TOPIC
BTW, since people are reading this topic, check my 300EX DRAG RACING QUESTION TOPIC
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Look at it this way, you've gone from a 22 inch rear to a 20 inch, this alone is the same as adding 2 or more teeth to the rear sprocket, add a freer flowing intake and aftermarket exhaust, and you will be hitting the rev limit way sooner than stock. You can't keep stock gearing with the setup you have, either that, or you will need a modified ingition to rev higher. I put 20 inch tires on, lost power hitting the rev limit, went from a 13 to a 14 tooth front sprocket, ran fine. I put a Supertrapp exhaust and Uni filter on, rejetted,ran great, but started hitting the rev limit near full throttle in every gear, because now it can rev freer without intake and exhaust restrictions. I got a cdi off ebay that has the rev limit removed. Now it revs great, full speed runs let me rev it out in each gear, and 5th wide open runs fine. You have 2 options: regear or buy a cdi ( a third would be put 22 inch tires back on, just to see the difference it makes.
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A modified cdi will usually have the rev limit raised 1000 rpm to make the most of engine mods, the one I have has the limit removed, with one like that, you just have to use common sense and not rev the living daylights out of it. With a mostly stock motor,you will likely float the valves before you do any real damage, but with an aftermarket cam and valve springs,you could probably hold high enough rpm to do damage. As long as you use the cdi to just shift in the power band, and not hold it while the motor revs to the sky, it won't do any damage.
yellowexracer - that icon of yours sure looks painful, too much chilli and barbeque??????
yellowexracer - that icon of yours sure looks painful, too much chilli and barbeque??????