Here's a piccie of my JEN 56 with AJ's diesel head on and a 7mm MVVS carb. I never had any success with this engine as a glow (would not throttle up cleanly) so perhaps it will work better as a diesel. Just thinking about a model for it now...

Also shown is a diesel head for an ASP 12. The ASP 12 is a very small, light engine - I just ordered it along with the head, but I sent it straight back as a bearing felt notchy. I plan to use its replacement in electric models converted to diesel. Will be nice to take with me when I'm out "walking the dog".

The 56 is an ABC engine: if it still refuses to work properly (I can't see that now) I'll use the ringed version I have, which is also not very good at responding to the throttle - as a glow, anyway.

Can't wait to hear them running - it's been many years (control line days) since I've run any diesels.