A rose is a rose etc. whether it's an '07 EFI or a '78 stroker... There might be other reasons but in my experience, the first thing I'd look for with excessive heat is a lean condition and/or improper timing...
Why that is an HD prob in the rear cylinder is probably the fault of the Eco-freak enviromental Nazis, they mandate a very lean mixture... Most likely you're running lean in both... I won't even guess about your timing...
Perhaps you can get a mixture reading at your tailpipes, then you'll know if that's part of the prob, fatten it up if you can and for sure get an oil cooler for the summer months if you're over-heating in winter... I love it,, a part-time one cylinder UPOS...
You know, a freer flowing exhaust might make it worse i.e. even leaner...
Posted by: frisco-rigid on Jan 23, 07 12:22:59 am | 
1990 Electra Glide Final 
Linear Mode
