How to Indentify Engine ?

howdie folks,

I came in to possession of 2 engine casings. I have gone through the engine id & many, many microfiche pdf's looking for the bike that these casings belong too. But can not for the life of me figure out what bike they are from. I was told they came from a SM610, can anyone else identify them from the numbers ?

Says on casing:
CAGIVA - HUSQVARNA H71
A00975


Then I have 2 different casing numbers: 78664/78665 for either side of the casing

Any ideas ?

I will look at the microfiche when i get to the shop..... I would guess if you added 8000 to the front of 78665 and 78664 it would be the part number although it probably has a single number for the set...

would appreciate that, thanks

Does it match images available on google search of 610 cases?
Can you post photos of the cases?

i'll take some pics tomorrow

Well if you guys can identify it from a pic, your a better man than me

Bears resemblance to this one. Maybe you could ask the seller for some comparative measurements. I don't know how close the bore diameter to the cylinder head compares to the pistons in the machines. I have never had the cylinder head off of my 450 or looked at drawings of the engines.
http://www.ebay.co.uk/itm/Husqvarna...rcycles_Parts_Accessories&hash=item46228b1217

yes it looks like a 610, which is what I was told it was, but how would I know what year or model it was for. Seems I'm not going to get to the bottom of this. Might just send it to the scrap yard.