Thread: engine identification help.

i have a 4 down motor how can i tell what year and make the engine is?

mike

Originally Posted by mhughes250

i have a 4 down motor how can i tell what year and make the engine is?

mike

What is the number on it? Look down by the front sprocket.

Karen's right. If you give us the full engine serial number, one of us can help you out.

here is the number i found AE03E-5098341 on the case.thanks for the help

quick search on the web says an XR50R year 2000-2003

Originally Posted by scooter

quick search on the web says an XR50R year 2000-2003

OK but the four down part is now confusing...?

i check it with a xr50 I have thats a 2003 and it was the same first 5 digits. any idea how its 4 down? is there a way to change it back to three up or one down 3 up. are there tranny kits out there?

I suspect that complete shift drum assemblies still interchange between 49cc cases (that includes the 72cc variants found in CT70s) and that's all you need to change shift pattern.

so all i need is a shift drum? where can i find a stock three up shift drum?

The latter ct's have netural at the bottom and 3 up. 91 to 94 for sure