Stocko shocko porting and timing numbers

We are doing this cylinder with one of Graham's squish heads. Does anyone have a port map and port timing of this cylinder stock and ideally modded?

Hobbit of course. Modded pa 50 1 case and oem pa 50 1 crank!!

Re: Stocko shocko porting and timing numbers

I widened the exhaust 2mm on each side and raised it 1mm, never ran it stock but it is currently on a nc50 and doing 40 with stock carb and pipe.

Re: Stocko shocko porting and timing numbers

Yes, I realize this is a 9 year old thread.

stocko-shocko-port-map.jpg

Here's a port map I took of the stocko-shocko cylinder. It's pretty similar to the stock P3 / P4 port maps, though not exactly the same as either.

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