Engine Color

1952 - 1968, M38A1, M170, questions, discussions, regarding anything related to the M38a1 series.
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Whiterook
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Engine Color

Post by Whiterook » Sat Apr 29, 2006 8:00 am

I have a friend that is overhauling his M38. He asked to me check and see if someone could tell me the correct color he should paint the engine.
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engine block color

Post by Rich Saylor » Sat Apr 29, 2006 9:25 am

Same as the rest of the Jeep, semigloss OD. The closest premixed color is RAPCO color number 33070, the AJP color is "late WW2 semigloss", it's all the exact same Gillespie color. The electrical parts are black, the crossover tube is also the same green, the exhaust manifold is unpainted, and left to rust. Cylinder head green.
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Post by Jeff_H » Sat Apr 29, 2006 2:00 pm

Unless it's Canadian. Apparently rebuilt engines were painted Ford engine grey.
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Post by Wes K » Sun Apr 30, 2006 3:41 pm

The correct 1950 to 52 four digit FS595 paint number is 2430. The closest match in todays available off the shelf paint is Gillespie's 23070 (the 2 denotes semi-gloss) and this paint is sold by many dealers including RAPCO. Now Army Jeep Parts In Penn. markets there own version of 23070 called "Late WWII OD". All the above applies to a Willys M38 at the Willys factory exit door.

In the field the Army repainted both the body and the engine with 24087. This is a little more brownish in appearance and seems just a tad glossier than the original paints. 24087 is readily availabel from most MV dealers.
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color

Post by Rich Saylor » Mon May 01, 2006 8:29 am

Whoops, I slipped up- 23070 is correct, hit the wrong key there & didn't catch it.

The only example of the often referred to 2430 is on the internet, which is no way to color match, so I don't know how close it really is- in daylight, not on the internet- to the original colors I've seen on Jeeps. Unless someone makes up an exact match of the surviving 2430 chip and sends samples around, I'm not liable to, either- so until that time, what I've seen on M38's is the only source of data I have to work with, myself. In any event as it was painted on a sample card so long ago, one would think it's subject to the same kind of color change over time that original paint on Jeeps is, providing that the paint used for color matching was well protected- like under equipment, inside the headlamp bowl (as my samples were) and so forth.

I might mention that the few samples of original, untouched paint I've seen are a bit less green than 23070, so to make a better match I started with 23070 & added a bit of the brownish later color (24087) to tone down the green. However even if straight 23070 isn't a perfect match, it's still pretty close, so using it as-is is very convenient, not to mention the very handy spray cans also available.

For reasons that pass understanding, there's a hazmat fee for shipping gallons, but NOT for shipping spray cans, so I advise getting as much in gallons as you're likely to use. For the entire Jeep including frame, suspension, tub, other sheet metal, parts, and block, I suggest 3 gallons, to be sure. Primer, etc. as you like. The reducer can be obtained locally, so no shipping charges. And as I said, no hazmat fees on spray cans, only normal shipping charges. There's usually a small discount for quantity, like 12 spray cans in a box, or 4 gallons- so maybe 3 gallons of paint, 1 primer...primer is pretty available locally, depending on what you like. Myself, I like primer with a good amount of zinc in it- like epoxy based primer with zinc, used with a catalyst, after metal-etching the surface. Jasco makes metal etch solution, usually diluted 3 water to 1 solution, which is mainly phosphoric acid.

There is reason to believe that the frames & major suspension bits (like springs) were painted black by the suppliers to Willys, then painted over with OD by Willys during final assembly. So far, I haven't heard of or seen an original M38 with only black under the tub. If, however, anyone has good evidence that the frames & suspension were left black, I'd like to hear about it. Might mention that what was done in WW2 may well have been different by the time of the postwar military Jeeps.
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Re: Engine Color

Post by EME-LT » Sat Jul 07, 2018 12:37 pm

Anyone know what colour the Canadians used on rebuilt m38 engines?

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Re: Engine Color

Post by dpcd67 » Mon Jul 09, 2018 9:40 am

All the Ford built M38s I have seen have 9N Tractor gray engines. Rebuilds? DK.
Here is the difference between 23070 and 24087, on my two M37s, one a 53 and the other a 63, B1. 24087 they started using in about 56. But a factory M38 would always be 2430, or its modern version, 23070. Post 56 rebuild; 24087 and the US Army on the hood, not USA. The early M37 is not correct; my fault for not thinking.
I buy two gallons of paint and 12 spray cans for every jeep restoration, and that will do everything. For Dodges, 3 gallons, and for a WC63, 4.
M37s Two - 1.jpg
M37s Two - 1.jpg (36.77 KiB) Viewed 189 times
Last edited by dpcd67 on Mon Jul 09, 2018 9:49 am, edited 1 time in total.
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Re: Engine Color

Post by dpcd67 » Mon Jul 09, 2018 9:46 am

And here is my M38 Engine which I set last month; the body is on now and I am making a wiring harness from an M35 one; another story. Paint is 23070; June 51 M38. 23100.
M38 Engine - 1 (1).jpg
M38 Engine - 1 (1).jpg (63.29 KiB) Viewed 187 times
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Re: Engine Color

Post by EME-LT » Mon Jul 09, 2018 7:33 pm

I knew it was a tractor colour!

Thank you... the Tractor Grey was the colour used when engine was rebuilt.

Your projects looks great...

I have the frame, suspension, steering, axle and all associated seals and bearings including new tires.

The engine is in the machine shop and I just ordered a full 24 volt wire harness.

Body will be painted in November.

Thanks again, Lyle
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Re: Engine Color

Post by dpcd67 » Tue Jul 10, 2018 7:28 am

I didn't want to spend the 850 on a new harness so I am making one out of a new M35 harness. While it is very possible to do this, and it will be right when I am done, I should have just sold some plasma and bought a new one. Because it is very tedious.
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