OldIHC

I'm wondering if there is a double pulley for the SD220 engine? I'm trying to find a way to add an A/C compressor, If I can't find something that'll fit I'll probably machine a adapter to add a cast pulley to my crank pulley to drive the compressor. When I try to add another pulley to the orig. set up I 'm thinking I'll be losing to much contact and end up with the squealing belt syndrome. Your thoughts Gentlemen?

A two cyl recip compressor can draw as much as 8 hp off the engine so a dedictated belt is almost a requirement. Check with a AC shop (one that does aftermarket additions) and see if they have some pulley that will bolt onto the balancer.

I save pulleys like my life depends on it.
Give me some dimesions and a picture of yours I will try to come up with a pulley that wouldn't be so hard to add to your existing pulley. Maybe. Hopefully.

After checking Crankshaft pulley/ Fan blade clearances I'm thinking I might have to come off the top as the Aussies did to mount my compressor. I've got plenty of room on the drivers side just not enough belt clearance as it comes off the Crankshaft. Thanks