Sounds like you have found a Kirloskar Petteroid.
The AV series Petter was manufactured under liscence from Petters Ltd in India by KOEL ( Kirloskar Oil Engines Limited ).
If it is an AV1 its probably a very close copy of the original
This is a link to an old Ebay auction of a TV1 and marks the beginning of the Petteroids as I understand.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180149370884The DM 10 like my Petteroid seems to mark the end of the evolution of the type ( with a lot of borrowed ideas from the PJÂ and PHW engines that were never manufactured under liscence from Petter ).
The AV1 is considered an obscolete type by Lister Petter who proivide no parts of technical suport in Canada for it. However the Indians and KOEL in particualr still build it and parts are available.
Doug
Can you get pictures?
I don't understand how it came from England in the 70's with a Petter connection if it was made in India maybe Peter can provide some insight.
In the 70's KOEL seems to have introduced at least one engine into the North American market, the KA-27. They had a distributor but for what ever reason they didn't make any head way ( engines were probably not up to par ).
Peter also spoke in a posting about an Indian engine builder trying to sell engines in England based in Lister/Petter engines in the 70s ( and laughed out of trade shows ). This may explain how a KOEL engine ( if that is what this is ) came to Canada from England