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Once you have cut your ports part it off and then lap it.
Okay--Then the modification to my process is that I don't lap the piston into the bore. However, if I don't lap the piston to the bore, does this require that I make up some type of plug gauge to check the bore with?--Otherwise, I have no way of knowing when the bore has been lapped enough.
Hey Brian, I'm a little late catching up. That carburetor design is definitely unique and quite simple. I don't see any reason why it wouldn't work on a 4 stroke as well. What do you think?I've been using TimeSaver lapping compound and am quite happy with it. It comes in a powder which you mix with light grade oil. It's friable and breaks down as you use it, ending up almost as a polish. I've used it to lap valves and should think it would work as well with a piston and cylinder. Here's a link to the product...http://www.newmantools.com/lapping/time.htmChuck