Fordiesel69 210 #1 Posted June 2, 2015 Finally scored one one of these after years of looking. What are the differences between these? What is so much better about the 13? Share this post Link to post Share on other sites
squonk 38,913 #2 Posted June 2, 2015 I believe the block has a bit more meat in it for boring and other mods. Share this post Link to post Share on other sites
Fordiesel69 210 #3 Posted June 2, 2015 So from a stock standpoint, one will not be more powerful / cool better? Only if modding?This one runs too nice to even crack it open. Share this post Link to post Share on other sites
pacer 3,159 #4 Posted June 2, 2015 So, is this 12/13 fin thing on the block? Doesnt seem y'all are talking about the head? Was this a year related thing, like an older year was one way - 12 fin - and later yrs were 13?I've got a "official" replacement Kohler 16 in my D-160 and I do like that engine!Then a couple weeks ago I scored a gloat worthy complete K341down to the wiring still attached for $100. Yesterday I got it running (no spark - apparently condenser) and danged if that thing dont sound GOOD. I'll have to look into this fin thing. Share this post Link to post Share on other sites
groundhog47 347 #5 Posted June 2, 2015 Here's an excerpt from one of the engine builder guys: The 12 and 13 fin 16hp Kohler blocks - The 12 fin Kohler K-series and Magnum engine block models K341/M16 (16hp) have an indentation in the cooling fins (clearance for a straight oil fill/dipstick tube) and a threaded hole towards the bottom of the cylinder. This block have a thinner cylinder wall than the 13 fin block. This block is most common, and used mainly for light duty lawn and garden equipment applications, and can be safely bored up to a 3.825" [pulling] piston without danger of seriously weakening the integrity of the cylinder wall. But the 13 fin Kohler engine block model K341 (16hp) have a thicker cylinder wall. This block is somewhat rare, and used mainly for heavy duty industrial applications and can be bored for a much bigger [pulling] piston, up to 4-1/8". Both blocks originally have a STD cylinder bore of 3.750 5 Share this post Link to post Share on other sites
Fordiesel69 210 #6 Posted June 2, 2015 I guess I should just be happy I have a good runner and not worry about the fins then. I now own every size from 8HP to 16HP. Did I ever mention that these kohlers are my favorite? Share this post Link to post Share on other sites
roadapples 6,981 #7 Posted June 2, 2015 some good info. here, thanks groundhog. I have one each of the 16`s and a 13 fin K321? the plot thickens! 1 Share this post Link to post Share on other sites
