Hey guys ive got and opposed twin not sure what model because the guy before me got rid of the numbers on the shroud I was wondering how to id this thing also I see everyone talking about oiling modifications anyone got a link to those? And one last thing im wanting to put a bigger cam in it but cant seem to find one im sure the engine is the 18 or 19 horse model anyone know of a good cam for it and maybe a set of heads? One of mine is cracked.
The best way to tell what engine would be to take it apart and measure. There should be numbers cast onto the cylinder heads, saying "MOD42" or "MOD46" on them, but don't take that as an absolute either. There were two different bores as well, either a 3.42" OR 3.57" bore. The connecting rods can sometimes be a clue as well, they will have numbers cast into them....
as far as finding things on heymow, click on the search button on the left, it's better.
As far as camshafts, Tim Isky makes superior camshafts for the opposed. Again, use the search button for his info, it's in here somewhere.
Finally, as far as cylinder heads, there is some controversy as to which set is best. But here's what I've learned. For mostly stock and a few mods, the "MOD46" heads work best, and the transfer port has some minor differences to compensate. However, I have found that if you can make the poor beast live at a higher RPM, the "MOD42" head is better.
