Red Headed Horse 38 #1 Posted October 19, 2020 I am looking for a K91 engine for my Suburban. Am I right that all K91 engines will essentially be ok to bolt straight onto the chassis in its original location? I guess what I am trying to say is it all the same size? Thanks Share this post Link to post Share on other sites
wallfish 15,921 #2 Posted October 19, 2020 A K91 Kohler engine will bolt on but you need to watch for is the shaft. Some have a tapered shaft, some have gear reduction, etc. You may have better luck finding one more local as in, on your side of the pond by posting an ad over on the My Old Machine forum. https://myoldmachine.com/ Lots of Wheel Horse and other engine guys on there. They are sought after here and probably a bit more rare over there but it's certainly worth a try. 4 Share this post Link to post Share on other sites
953 nut 51,719 #3 Posted October 19, 2020 Chances are there will be someone willing to trade for a running HH60 if you don't plan to use it.. Like John said, got to look at the K-91to be sure it has the right crankshaft for your application. Good luck. 1 Share this post Link to post Share on other sites
Red Headed Horse 38 #4 Posted October 20, 2020 Thanks both of you. Yes the HH60 could be a possibility Share this post Link to post Share on other sites
Red Headed Horse 38 #5 Posted October 21, 2020 (edited) I think I have sourced one which is bolted onto a generator. I have asked for photos and details of the engine. Hoping this might be of use to me.... Edited October 21, 2020 by Red Headed Horse Share this post Link to post Share on other sites
oliver2-44 8,852 #6 Posted November 1, 2020 Be sure to check the shaft as mentioned above. if it is a direct connection to the generator it could have a tapered shaft. 1 Share this post Link to post Share on other sites
WHNJ701 4,164 #7 Posted November 1, 2020 13 hours ago, oliver2-44 said: Be sure to check the shaft as mentioned above. if it is a direct connection to the generator it could have a tapered shaft. I was looking a part # yesterday in my kohler book amazing how many variations of the k90/k91 crankshafts were made. Also I remembered a guy had a little go cart with a briggs. He just took an angle grinder to the crank shaft to grind the gear reduction off just to get the pulley onto it. Hey it worked! 1 Share this post Link to post Share on other sites
Red Headed Horse 38 #8 Posted November 2, 2020 On 11/1/2020 at 12:06 AM, oliver2-44 said: Be sure to check the shaft as mentioned above. if it is a direct connection to the generator it could have a tapered shaft. Probably a dumb question but I assume I could change the shaft to the correct one? Share this post Link to post Share on other sites
oliver2-44 8,852 #9 Posted November 2, 2020 @Red Headed Horse yes you definitely could change shaft to correct one. I know on the larger Kohler engines with the 1" shaft , if you have a tapered one, I've seen on here where members have found a tapered adapter of Ebay. that could be an option for the K91 3/4" shaft but I don't recall hearing of it being done. 1 Share this post Link to post Share on other sites
pfrederi 17,147 #10 Posted November 2, 2020 If you could tolerate a 1" output.... 1 Share this post Link to post Share on other sites
Red Headed Horse 38 #11 Posted November 3, 2020 Thanks you both for your input. I am still waiting for photos of the engine from the seller. Thanks again. Share this post Link to post Share on other sites
