rearenginekarts.com

I was at the goodguys swap meet on friday I came across this cool little engine . I tried to start it up 2nd pull she fired right up and this thing sounds evil can any one tell me what it is and if can I put it on a vintage kart ? I did see on the carb tillston

heres a pic. of the carb

Looks like an AH-51 Power Products; could be a late AH-47. They were used on lots of low cost chainsaws. 5.1 cubic inches, cross-scavenged. Not much power there, enough for the kids to putt around with. It's a good, reliable little engine, but that's all. Ted

are you guys sure that this is ah51 is there a number or tag to tell what it is for sure

I have one just like that. It is an Power Products AH 47.

As I said before: some of the later AH-47's used these air shrouds, but the vast majority of these shrouds came on AH-51's. Both cross-scavenged, both low power. You can tell it's cross-scavenged by the fact that there are no port transfer passages on each side of the lower cylinder. 2 1/2 to 3 H.P. not a bad mini bike mill. TJ

The AH47 and the AH51 have the same bore, 2.000, the stroke on the 47 is 1.500 and the 51 is 1.625, being the plug is in the middle of the head you could check the stroke with a depth mike or calipier.

Louie