Good to hear some big numbers. I had heard of these before. Now, how to obtain them and back to the question. How about some numbers. Exhaust, transfer, boost, intake open/close, head volume, head clearance

Either for a 40 or 60 will be fine and a good starting point is fine as well. I have seen the rcboat.com stuff and the software is great for telling you how much material to remove to get certain timings. But the numbers themselves can only come from experience. And from experience I know that a Jett or Nelson will have different timings than an OS or Thunder Tigre. MAC engines come with better timings than most engines, but with modifications to PICCO and CMB these engines will run with the MAC. And for the same life span. I am just looking for a little direction. Not trying to make a JETT or Nelson from an average engine.






combatpigg,
We ain't turn'n those brass flywheels anymore. The weight thing just ain't the entire case. As far as weight goes, my rear exhaust Rossi is a pig.