Help Identifying Engines

That’s awesome! Thanks Ken! Even if we never get any use of these it’s so much fun to get to know the history and stories behind them. Are these collectible or were they to mass produced to be that valuable to collectors?

If you're lucky you might get the .36X cleaned and lubed up to running condition w/o disassembly. Put a wad of plastic wrap topped with Silly Putty in air intake and exhaust before giving a good external scrubbing with Simple Green, Dawn dish detergent, acetone etc. Then remove NV-spray bar assembly for good soaking in acetone, clean up details with Q tips in solvent etc, apply lube in glow plug hole and intake and heat to free up hopefully.

Well, to some one like myself and those that use them, yes they carry merit in terms of needing them. In general, condition is everything and these engines were typically run hard. They were produced for nearly 10 years. Parts supplies though are far and few. New in the box examples generally fetch about $100-$150 but used examples like yours are considerably lower. Larry Scarinzi is a combat flyer from the early years who would rework these engines for the combat guys. He also worked with Duke to improve on this design. I see Larry a few times a year and he still flies even being in his mid 80's. I saw him a few months ago and I happened to notice he wasn't flying. Rusty who's a moderator here on the forum was recently gifted one of Larry's designs never kitted the Super Satan using the Fox .36x. https://www.youtube.com/watch?v=4QIh6-DH7UA

        I will add, the engine will ABSOLUTELY need to be taken apart if you decide to run it. The bearing more than likely is gummed up and if not properly cleaned, the crankshaft will spin inside the race which will destroy the crankshaft and possibly engine, I have seen this multiple times. In addition, the rod on the top end needs to be freed up on the conrod. The wrist pin will egg out the holes in the piston otherwise  in very short order if not properly dealt with. At this stage, it would be strongly advised to replace the bearing as they're not as expensive as replacing a engine. I have had some bearings clean up to the point of useable but that's not always the situation.

Mopho,

Do you have any pictures you can post? Seeing is much better when trying to help. BTW Ken knows his stuff with the older Combat engines. Just listen and learn.

Cribbs,

It wouldn’t let me upload more than 2 pictures into my post so I put them in an imgur album here https://imgur.com/a/o1cbUre

And I agree, Ken, and everyone so far has been incredibly helpful! I really wasn’t expecting this many responses this soon. I’m glad there is a very active community! It’s never been a hobby I’ve done much research into but my dad has always been at least mildly curious hence why he purchased them. I doubt we’ll ever try to put them into a plane but getting them restored and running would be cool!