8ntruck 8,469 #1 Posted December 17, 2025 @Tim's Toy Tractor add in the classified has me wondering what kind of parts commonality there is between the Kohker KT17 and KT19. Anybody? Anybody? Share this post Link to post Share on other sites
8ntruck 8,469 #2 Posted December 17, 2025 (edited) @Tim's Toy Tractor add in the classified has me wondering what kind of parts commonality there is between the Kohker KT17 and KT19. Anybody? Anybody? Sorry. Call it key bounce - double post. Edited December 17, 2025 by 8ntruck Share this post Link to post Share on other sites
WHX?? 53,699 #3 Posted December 17, 2025 Mods @admin cleanup in engines ... I would bet just about everything but pistons & rods. Maybe a bit more with series 1 & 2. Lotta parts there for 150 clams. 1 Share this post Link to post Share on other sites
Handy Don 15,593 #4 Posted December 17, 2025 Curious. Following... Share this post Link to post Share on other sites
pfrederi 19,447 #5 Posted December 17, 2025 Look at the parts manual Share this post Link to post Share on other sites
kpinnc 16,505 #6 Posted December 17, 2025 (edited) I think aside from things like tins, the jugs and heads are about it. Maybe crank and rods... Keep in mind there were series 1 and 2 KT17 engines. Very different lubrication systems... including crank and cam oil port boring. I'm sure some are very similar, but just make sure you have the same series. Edited December 17, 2025 by kpinnc Share this post Link to post Share on other sites
953 nut 63,540 #7 Posted December 17, 2025 9 hours ago, kpinnc said: Maybe crank and rods... That is the only change, The KT-17 and M-18 have a stroke of 2.75" and the KT-19 and M-20 have a stroke of 3.06" resulting in a 6.0:1 compression rate for the 17/18 and 6.66:1 for the 19/20 engines. Share this post Link to post Share on other sites
8ntruck 8,469 #8 Posted December 17, 2025 (edited) My initial digging around last night didn't turn up a clean list of interchangeable parts. But, the KT 19 and KT 17 share the same bore size, but have different cranks and rods - not sure about pistons (possible difference in wrist pin location). @pfrederi - thanks for the link to the ipl. Something to study while I'm recovering from cataract surgery today. Edited December 17, 2025 by 8ntruck Share this post Link to post Share on other sites
