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This is more a general 2-stroke question but I'm working on a LT50.
The exhaust & transfers are still partialy covered at BDC by about 2.5 mm. Seems a pretty big chunk of a port. Same on stock cylinder/piston and 2 aftermarket kits. I can space it up and machine the deck but don't know what raising the top of the ports will do on this old piston port. I wanted to build a better pipe, do I subtract the covered area from the total exhaust port area? The port timing looks pretty sad in the exhaust calcs.
Don't get piston port engines, is this normal?
The exhaust & transfers are still partialy covered at BDC by about 2.5 mm. Seems a pretty big chunk of a port. Same on stock cylinder/piston and 2 aftermarket kits. I can space it up and machine the deck but don't know what raising the top of the ports will do on this old piston port. I wanted to build a better pipe, do I subtract the covered area from the total exhaust port area? The port timing looks pretty sad in the exhaust calcs.
Don't get piston port engines, is this normal?