Permsteading.com

As for an already built J, I changed my J into this batch by casting where the feed was, but I don't think the secondary air thing has any relevance in a J. Peter's P-channel is the way to get the proper air mix in a J, and even that is a small step. J's are amazing in their simplicity and how well they just plain work.

Actually Manny, this thing is blasting so much heat from the firebox area it worries me a bit since it's so much hotter in that area than the J ever was. I think it's due to me slowing everything down with this mod, but yeah, lots of heat from that area.