Hi folks,

I have just finished "tweaking" my compressor (see
www.228mill.com/tinker.htm ) and now have a motor and cylinder head left.
I'd like to try and make a vacuum pump from the leftover bits and was
wondering what y'all think before I start.

Any mods needed to the rings/piston etc.

I was thinking of using an old propane tank (empty and cleaned) to store
the vacuum with some kind of pressure switch to cycle it.

I know I'm never going to get to -32in.hg but would like to get in the -28
range

Thanks all