Greetings, all! I’ve got a problem that I’d like to open up for discussion. See, I’ve got a 4.2 out of (what I’m told) an ‘81 CJ. It was running strong so I decided to fuel inject it using a Howell based kit. Things were great!... until yesterday. Ever once in a while I’d start it and there would be a few seconds of a knock. I never stood next to it at start up so I never knew if it was in the head or if it was deeper. Yesterday the knock continued longer then usual... then it went away... then it came back at higher rpms. I definitely have a rod knock. Right now I’m working towards putting up a work shed so I’m thinking budget friendly but also a few other thoughts to justify things. Bear with me. What are some opinions on 4.0 swap but retaining my Howell fuel injection? Everything is only a few weeks old and I’ve got an HEI distributor in it too. 4.0s are a slightly higher reving engine than the 4.2 so I think long term it’d have a happier life in front of my T14. The 4.0 engines are definitely easier to find in good used condition as well. Looking around in internet land, there are a bunch of “4.0 with a carb” threads and they all have the same follow up questions concerning keeping the EFI over a carb. The 4.0 will run in a carb so it’ll definitely run on a Howell. So... thoughts?