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Thread: MEP-25A engine issues

  1. #21
    Private BT13Guy's Avatar
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    Chainbreaker,

    The airplane was pulled from the Marshal Island chain in 1990. The airplane was amazingly intact. It was disassembled for the transport to the States. the hull was 80% there but heavily corroded. the aircraft had some pot shots taken at it over the years, but it was not demolition by US Forces, so it survived the war pretty intact. the Marshalese took parts off of her when they needed something but mostly all there. We have a few of us who are trained in 3D modeling and CATIA/Solid-works software for making production drawings and translating the Mitsubishi drawings into modern 3D models. we can then produce 2D files for production down to the hangar floor. It sounds like we have a whole lot of people and manufacturing going on but it is only 7 of us, 4 full time and 3 volunteers. Gotta have a love for aviation, and seeing these old birds fly. Just like MV and restoring military equipment, its a sickness!! Spurred on by "Olive Drab" syndrome as my wife calls it.

    So we design the tooling off of the original part, we make a drawing of the new part, then we produce it. Everything is in house. We have a full machine shop, metal bending, shearing equipment, etc. Plus a lot of patience. I retired last year from DoD after 33 years (23 years active Marine, 10 yrs NAVAIR contractor) and moved home to be with my dad and finish the Zero, so its for sure a labor of love.

    Here are a couple of pics of the jeeps I have restored:
    SSGT Hammer.jpgIMG_0439.jpg

    1946 CJ2A I converted for my Dad to a "MB" wanna be, and a 1952 M38 USMC jeep my buddy and i recovered in Yuma AZ and restored. 2007 at my retirement.
    So, let me know if I can help wuith the harnesses, it would be fun to do, if you need anything let me know. if you ever come up this way we can certainly give you a tour of the project. Our doors are always open to like minded enthusiasts....
    Daniel Hammer
    GySgt USMC (RET)
    1945 Willys MB
    1947 CJ-2A
    MEP-25A
    1936 Lockheed Electra 12a Jr.

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    Chainbreaker (08-21-2019), Guyfang (08-21-2019), SCSG-G4 (08-23-2019)

  3. #22
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    Nice Jeeps, I'm envious! Yep, the olive drab syndrome can become an incurable addiction! My dad was crew, as a blister gunner, on a B29 during the war flying bombing runs out of Tinian. I always looked at his old war photo's of B29's in awe as a child so the aviation seeds were planted early. I later obtained my pilots license and enjoyed flying when work didn't get in the way.

    Funny you should mention NAVAIR...The company I was working for at the time, Intergraph Inc. during the 90's, participated in a huge NAVAIR contract for purchase of CAE/CAD/CAM simulation and design software. I headed up the team that executed the electronics software segment of the benchmark. We were eventually awarded the contract after successfully competing against all other competitors.

    I have a good friend living in Seattle area so whenever I get up that way I will let you know in advance. Again, thanks for the wiring harness offer I'll let you know if I need help with it.

    Anyway, were probably drifting a bit off course with our "aviation" related discussion in the Generator forum. If we talk much more aviation a Moderator may move us over to the "Planes & Helicopter" forum...lol
    GEN #1 House Gen PU-751/M: 1986 MEP-002a/M116A2 w/Aux Tank & OEM cover
    GEN #2 Spare Gen PU-751/M: 1991 MEP-002a/M116A2 w/Aux Tank & OEM cover
    GEN #3 Shop/Barn Gen NF-2 Enclosure: 19XX MEP-002a w/Aux Tank
    GEN #4 Spare Gen PU-751/M: 1991 MEP-002a/M116A2 (a work in process)

    * Disclaimer - My comments on this forum are based on my opinion and my experiences only. It is your responsibility to verify any information before using or to hire a professional.

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  5. #23
    4 Star General FloridaAKM's Avatar
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    I have one of those gensets, NIB from a sale many years ago. It has never been run, muchless had gasoline it it. I had forgotten about it till now.
    Quote Originally Posted by BT13Guy View Post
    Attachment 773431

    Here is our set up.
    1985/87 M35A2C Wo/w Deuce x 2
    2011 M1102 Trailer (tan)
    2009 M1102 Trailer (camo)
    2009 M1102 Trailer (camo w/ hoops & cover)
    1989 M105A2 Trailers (7) - One tan & six camo w/ tops
    1987 M103A3 Kasel Genset Trailer
    1990 A/M32K-4A Air Launched Missle Trailer
    2005 M353 Trailer
    1985 MEP-003A Genset
    1986 MEP-002A Genset (2)
    1974 MEP-016A Genset
    1968 MEP-025A Genset
    1984 MEP-701A Genset
    1996 Stewart & Stevenson M1081/M1082 Trailer
    1990 Marine 18 K A/C Unit (X4)
    MGPTS x 4 complete, tan & green!

  6. #24
    4 Star General Guyfang's Avatar
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    The 28 VDC set was perfect for keeping batteries charged on a radio set up on a jeep or truck. The 60 Hertz set was good to run the Co's and First Shirts tent. Or a light set in a GP med. tent.And one person can carry it. Whats not to like!

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  8. #25
    Private BT13Guy's Avatar
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    so far so good, this little genset is awesome. I have finished fabricating the battery platform. I will send out some pics of the genset later this morning. Still trying to tune the little carb, it was new in the box, and I am following the TM for set up. NO ETHANOL, so I should be good on the fuel settings.

    More to follow

    Gunny
    Daniel Hammer
    GySgt USMC (RET)
    1945 Willys MB
    1947 CJ-2A
    MEP-25A
    1936 Lockheed Electra 12a Jr.

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  10. #26
    Private BT13Guy's Avatar
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    Great success today!! New battery platform is finished and I charged the battery for over 45 minutes. Ran on the flight line and purred.
    Finished unit:



    IMG_2756.jpgIMG_2752.jpg
    Attached Images Attached Images
    Last edited by BT13Guy; 08-21-2019 at 18:36.
    Daniel Hammer
    GySgt USMC (RET)
    1945 Willys MB
    1947 CJ-2A
    MEP-25A
    1936 Lockheed Electra 12a Jr.

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  12. #27
    4 Star General Guyfang's Avatar
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    Lookin good! And practical.

    Do you have electronic ignition on the engine?

  13. #28
    Private BT13Guy's Avatar
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    Guyfang,
    I do not have the electronic ignition. I have been watching one for sale on eBay from Satrunsurplus. It starts with one maybe two pulls, but if it is worth it in your opinion I will grab the one form Satrunsurplus and put it on. I have no where near the experience with these little engines compared to you all on the forum, so I am open to help getting this little girl running in top form.

    OBTW, here are some close ups you asked for the other day.
    IMG_2760.jpgIMG_2763.jpgIMG_2765.jpg
    Daniel Hammer
    GySgt USMC (RET)
    1945 Willys MB
    1947 CJ-2A
    MEP-25A
    1936 Lockheed Electra 12a Jr.

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  15. #29
    4 Star General Guyfang's Avatar
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    As long as it works, don't fool with it. But if you see the electronic ignition kit, and it's not so expensive you need to rob a bank, I would get it. The biggest PITA on these type engines, was points and timing. The kit ends that problem. Then wait till it needs a tune up, and install the kit. It's not hard.

    In the bad old days, we had to file points, save condensers and steal parts. No money. I learned to hate points systems. An extra set of plugs is also a good idea.

    Oh. Another hint. The linkage between the carb and the gov system. It's in the round do-hicky and the rubber hose. If you ever take it apart, plug up the rubber hose with a wad of paper. That hose will eat your screw, that fallers out of the linkage. That hose will send the screw to the oil pan. Lots of fun getting it back!
    Last edited by Guyfang; 08-23-2019 at 14:17.

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  17. #30
    Private BT13Guy's Avatar
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    I will get the electronic kit of eBay. its only $49 bucks.

    I am very used to points as I do them all the time in A/C magneto's. But they are a pain to get just right!! Yes, I saw the potential to lose a screw down that no-man's land dark deep cave!! I put a small paper towel in there to save me the trouble of shoving a magnet down there or worse pulling the oil pan off the bottom of the engine.

    I have spare plugs, amazing this little engine uses aircraft large electrode plugs. I have champion and tempest plugs that will work just dandy.
    Daniel Hammer
    GySgt USMC (RET)
    1945 Willys MB
    1947 CJ-2A
    MEP-25A
    1936 Lockheed Electra 12a Jr.

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