Brockport Bill 1,932 #1 Posted July 3 Using a Briggs twin 18 as a replacement engine - it was suggested to me perhaps their design might have a condensation issue during winter use ? Any insights, thoughts, or experiences with this issue? Thanks - Bill Share this post Link to post Share on other sites
Bill D 2,246 #2 Posted July 3 (edited) I'm curious about this as well. I've noticed the intake manifold sweating on humid days. Will there be a freezing issue in winter? There is no carb heater like the KT 17. I see plenty of videos of people plowing snow in winter with Briggs powered tractors. @c-series don Edited July 3 by Bill D Share this post Link to post Share on other sites
pfrederi 18,638 #3 Posted July 3 Early KT17s didn't have the heated intake for winter. I don't use twins in the winter, but that they added the preheat in later KT and the magnum twins maybe there was a problem. Share this post Link to post Share on other sites
Brockport Bill 1,932 #4 Posted July 3 1 minute ago, pfrederi said: Early KT17s didn't have the heated intake for winter. I don't use twins in the winter, but that they added the preheat in later KT and the magnum twins maybe there was a problem. yes aware of the KT - - was looking for info on the B&S Share this post Link to post Share on other sites
pfrederi 18,638 #5 Posted July 3 12 minutes ago, Brockport Bill said: yes aware of the KT - - was looking for info on the B&S I know but both Kohler and Briggs have intake manifolds. Manifolds are where the problems, if any, come from . Wonder if it is the long exposed manifold that could cause problems. Don't have any Onan twins do they have preheat ??? 1 Share this post Link to post Share on other sites
kpinnc 14,584 #6 Posted July 3 Can't speak for the manifold specifically, but ALL opposed engines from Briggs to Onan or even Subaru boxxer engines have issues of condensation on the bottom side of the cylinder walls. It seems plausible that any horizontal cylinder (meaning any vertical engine) would experience similar? Makes me wonder if the twins see the issue more often if one cylinder is more often exposed since as an engine spools down, one side usually stops close to the end of the compression stroke. That would dictate the opposing piston would rest fully down in the cylinder- leaving a wiped clean cylinder wall open to the air? I'm guessing of course but the issue is there on all opposed engines. My last Onan P218 had corrosion in the front cylinder from condensation, and the engine never spent a night outdoors. I have no idea how it got in there. Luckily it was light enough to hone out. 1 Share this post Link to post Share on other sites
c-series don 9,973 #7 Posted July 3 @Bill D This is the first I’ve heard of this. Back when my Work Horse GT-1800 was my prime snow mover I kept it in an unheated shed and never had a problem. I’m not sure if it would condensate more if it went from a warm heated area to out in the cold? Now I keep my 417-A in the heated garage for snow removal and haven’t had any issues with that either?! Feel like I just jinxed myself 😂 1 Share this post Link to post Share on other sites
