HorseWhisperer 243 #1 Posted September 12, 2018 (edited) Picked this up a couple days ago thinking I bought a commando 8.I went to change the oil and the drain was a hex plug in the "front" of the sump.Then I realize it's a 3/4 exuast without threads(NPT nipple just sitting there)port.Its jacobson orange.Obviously a replacement imposter k181 with the tins on it but what is it? Edited September 12, 2018 by HorseWhisperer Share this post Link to post Share on other sites
ebinmaine 62,953 #2 Posted September 12, 2018 I can't tell you what it is but I do know that different manufacturers spec things differently. I've seen that same oil drain difference just recently here. I'll look at the 3 k181s I have here later on and see if I can see that bump... I'm curious to see what you have there. 1 Share this post Link to post Share on other sites
HorseWhisperer 243 #3 Posted September 12, 2018 I'm pretty sure it's the heart from a 66 Jacobson by the faded orange paint but on 25 years I haven't seen a k161 or k181 with 3/4 non thread exhaust.it runs very well so its staying!! Share this post Link to post Share on other sites
ebinmaine 62,953 #4 Posted September 12, 2018 At least two of the eight horse engines I have here are threaded in exhaust like you would normally expect. The other one I can't see very well. One of the ones that's in a C81 I have here is painted some sort of bluish Gray. May have been a replacement engine. Not quite blue enough to be ford. Share this post Link to post Share on other sites
WH nut 553 #5 Posted September 16, 2018 The exhaust nipple sure looks threaded to me 1 Share this post Link to post Share on other sites
stevasaurus 22,229 #6 Posted September 16, 2018 Right, that nipple is threaded into the block. Here are my two K-181's...they are both threaded, but you can see that it is possible to go the other way and use a doughnut and bolts. Yours sure looks like a K-181...how many head bolts are on it??? 1 Share this post Link to post Share on other sites
buckrancher 2,673 #7 Posted September 16, 2018 (edited) the k141 ,k161 and k181 all use the same block early k141's and k161's use a smaller dia. cylinder bore 2 7/8" late k161's were bored the same dia. as the k181's 2 15/16" Brian Edited September 16, 2018 by buckrancher 1 Share this post Link to post Share on other sites
richmondred01 2,202 #8 Posted September 17, 2018 I agree with buckrancher. Most likely a 8 hp from a Jacobson chief or something of that era. Check the block at the pto for the embossing. That’s not always 100% but then mic the cylinder. Share this post Link to post Share on other sites
