pfrederi 18,661 #1 Posted November 21, 2021 (edited) After rebuild you have to run the engine for awhile then re-torque the head bolts. OK not much issue with the singles.... but the K and Magnum twins. You have to take the engine off the tractor and remove 11 bolts to remove the rear tin so you can get to the head bolts. Except one of the bolts will not clear the oil drain cap.. so you have to drain the oil. All this to check the torque on head bolts... Then do it over again (but only 8 bolts) for the front cylinder... Design guys should have to work on stuff.... Edited November 21, 2021 by pfrederi 3 Share this post Link to post Share on other sites
8ntruck 7,831 #2 Posted November 21, 2021 Your comment about design guys carries over to the designers of the current pick up trucks. Why the heck did they make them so tall? The design guys need to load and unload a 1/2 yard of gravel into one by hand. Then again, the majority of pick up trucks will never see service like that..... 2 Share this post Link to post Share on other sites
Handy Don 14,060 #3 Posted November 21, 2021 4 minutes ago, 8ntruck said: current pick up trucks. Why the heck did they make them so tall? Two reasons: height doesn't cost much and it makes it less complicated to place components and to route drive, plumbing and electrical, but mainly because the "stance" projects "power" and power sells. Share this post Link to post Share on other sites
Maxwell-8 4,367 #4 Posted November 21, 2021 When mechanics and engineers don't agree... 2 Share this post Link to post Share on other sites
8ntruck 7,831 #5 Posted November 21, 2021 Dodge started that trend when they did the 'big rig' re-style. 1 Share this post Link to post Share on other sites
Maxwell-8 4,367 #6 Posted November 21, 2021 2 minutes ago, Handy Don said: Two reasons: height doesn't cost much and it makes it less complicated to place components and to route drive, plumbing and electrical, but mainly because the "stance" projects "power" and power sells. Like all these aerodynamic ridingmowers haha.. 1 Share this post Link to post Share on other sites
Maxwell-8 4,367 #7 Posted November 21, 2021 23 minutes ago, pfrederi said: After rebuild you have to run the engine for awhile then re-torque the head bolts. OK not much issue with the singles.... but the K and Magnum twins. You have to take the engine off the tractor and remove 11 bolts to remove the rear tin so you can get to the head bolts. Except one of the bolts will not clear the oil drain cap.. so you have to drain the oil. All this to check the torque on head bolts... Then do it over again (but only 8 bolts) for the front cylinder... Design guys should have to work on stuff.... I have to remove these metal plates on my KT17 to be able to get a socket on the sparkplugs... Share this post Link to post Share on other sites
peter lena 9,255 #8 Posted November 21, 2021 @pfrederi would be a good spot for a FUMOTO OIL VALVE , OR SIMILAR BALL VALVE , often used in boat , bilges for oil changes, the locking set lever prevents , problems , typically design guys do not work on anything related to what they design , pete Share this post Link to post Share on other sites
richmondred01 2,307 #9 Posted November 21, 2021 (edited) Same issue with the onan. The transversed engine on the wheel horse design makes it more difficult to get access to the heads then other models with pto facing the rear. Edited November 21, 2021 by richmondred01 Share this post Link to post Share on other sites
lynnmor 7,813 #10 Posted November 21, 2021 Wheel Horse added that oil drain plumbing on both the Kohler and Onan, you can't blame that on the engine makers. An aftermarket drain system would be helpful. 1 Share this post Link to post Share on other sites
pfrederi 18,661 #12 Posted November 21, 2021 I changed the nipple so that is no longer a problem...still blame Kohler for having to play with so many tin bolts many of which do not want to line up without a struggle... Share this post Link to post Share on other sites
Gregor 4,847 #13 Posted November 21, 2021 2 hours ago, pfrederi said: After rebuild you have to run the engine for awhile then re-torque the head bolts. When a motor is brand new off the line, do you suppose they run it for a designated number of hours before it goes on a tractor? Then re-torque the head bolts. Or does this only apply to a rebuilt engine? 1 Share this post Link to post Share on other sites
Maxwell-8 4,367 #14 Posted November 21, 2021 32 minutes ago, Gregor said: When a motor is brand new off the line, do you suppose they run it for a designated number of hours before it goes on a tractor? Then re-torque the head bolts. Or does this only apply to a rebuilt engine? New or rebuild it should be done. but gets rarely done on new engines. some say the manufacturer does that but I hardly believe that. 2 Share this post Link to post Share on other sites
pacer 3,177 #15 Posted November 21, 2021 Yeah, you gotta wonder what these guys were thinking --- or NOT! These goofy things are all over ... well, most everything mechanical. My recent fun project was changing the starter on a K532 twin, a heap of removal! down to removing the flywheel! to get to the piece of tin that covers the 3 bolts!! 1 Share this post Link to post Share on other sites
roadapples 6,983 #16 Posted November 21, 2021 I have a 520 strictly for the 2 stage blower. Other than that a 16 single kohler is all I'll ever need.... Share this post Link to post Share on other sites
953 nut 59,914 #17 Posted November 21, 2021 Guess it would be a good idea to do the test run and second torque on a test stand. I do that anyway, easy to get at any problems that might crop up. 2 Share this post Link to post Share on other sites
pfrederi 18,661 #18 Posted November 21, 2021 6 minutes ago, 953 nut said: Guess it would be a good idea to do the test run and second torque on a test stand. I do that anyway, easy to get at any problems that might crop up. I have a test stand...works for singles but the twins do not fit.... 1 Share this post Link to post Share on other sites
