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For all your mechanical queries, or for sharing your mechanical know-how. Also used for arguing about which oil to use...
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Why lean engines run hot

27 Jul 2020, 13:10

Thought this an informative video, very relevant to an air cooled engine. Certainly supports my hope that now running larger main jets may avoid the damage I had to the pistons and cylinders 1 and 4 in the last rebuild. It had run stock jetting for most of its life, which I believe to be quite lean and 1 and 4 being especially so having one size smaller main jets than the middle two cylinders.

Re: Why lean engines run hot

31 Jul 2020, 16:10

The some interesting stuff on the Workshop, if you don't mind the swearing. :shock:
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