Vintage Dirt Bike Q & A

i can do some neat tricks with numbers if i had them.
looking for espically the 73 mt 250 port timings.

I dont think anyone has those specs on the port timings but you can find out by attatching a degree wheel to the crankshaft and removing the head then rotate the crank and measuring how many degrees the intake,transfer,and exhaust ports are open in degrees and noting open and close of the ports and coming up with some close numbers.just a idea.

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(2) 1968 DT1 1970 RT1M,1970 DT1C 1971 RT1B Enduro 1974 MT250 1974 DT250A (2) 1975 DT400B 1974 DT100,1978 DT175
1975 CR250M1 1979 CR250R 1979 Kawasaki KZ400H1 Jesus is Lord!!

i would like to create a elsinore port timing database. the next time any of you open the top end up can you please record the intake, exhaust and transfer port timings and the port opening size? to get the size just use the hight x width.

ill be opening my 73 mt 250 up in a week or 2.