Hi folks. I’m looking for a compressor pump (bare) for a new compressor project. The Ingersoll Rand Model 30 has always caught my eye, but I get very confused about models. There doesn’t seem to be a history page online. I’m looking for an older pump that i can rebuild and would work well with a new 4hp single phase motor. could anyone advise which models of the Type 30 range would work well at this power? I suspect it would fall somewhere between the 234, the 242 and the raft of other models that have been made. thank you.