They wouldn't be any good on a 250 either, not for compression anyway.

I checked with the machine shop today and there is not enough material to that far oversize and take any abuse with a heavy piston. To bush them you would have to even further since they are a press fit now. These guys seem to be pretty sharp andmost helpfull. My confidence factor is growing the more I work with them.

According to theory a little longer rod will get more RPM. Right now I'll just settle for a combination that works. It's going to take me a while to collect, sort, and figure the combinations.

I'm not real sure what the process is for both cast and forged. I know that they both start with a rough form and then machine it. I don't see why you couldn't start with a rough casting and machine it slightly different. I guess these days you have to consider liabilities. I'm sure Silvolite wouldn't sell a rough casting and the CNC program go with it.

Larry

Ignorance can be fixed Stupidity is forever