Hey I am just working on the AMT REO Diamond kit and I can't seem to make out the make of the engine in the kit? it doesn't look like a cummins, or Caterpillar? but I am curious more so for colour sakes

Thanks

The engine in the AMT Diamond-REO C11664DFL kit is a Cummins NTC350. The OEM color for the Cummins in that time period is Cummins Beige; however, I have heard that Diamond-REO did have there engines painted red, but I haven't seen any photographic evidence of this. Safe bet is to go with Cummins Beige. A good match is Tamiya Deck Tan XF-55. Here are some shots of a Cummins I did back in 2010 using the Deck Dan:




The filter & Cummins "C" decals are an aftermarket item.

Good luck with your project.

Jim

thanks a bunch

Actually a closer colour to Cummins yellow is Tamiya's XF-60 dark yellow (3 parts) with flat white (1 part); or go to any heavy truck shop and buy a can of Cummins yellow for about $10 - spray can will do about 30 engines.....

Art

The Cummins Yellow is more for engines from the 1950s & 1960s. Beige was used in the 1970s & 1980s before the switch to black.

Jim

Cummins "black" motors were from 03' to 07' before they started painting them Red for the Cummins Redhead motor line.

Jeremy,

I case you haven't guessed it, engine color is one of the most debated subjects in the Model Truck Community. It seems like for every rule, there are three exceptions!

This list will either help, or cause mass confusion:
Allis Chalmers - Plum Crazy Purple

Caterpillar
1145 - New Cat Yellow
1150 - New Cat Yellow
1160 - New Cat Yellow
1673 - New Cat Yellow
1674 - New Cat Yellow
1676 - New Cat Yellow
1693 - New Cat Yellow
3208 - New Cat Yellow
3306 - New Cat Yellow
3406 - New Cat Yellow
3408 - New Cat Yellow
3412 - New Cat Yellow
C5 - C19 - New Cat Yellow with Black valve covers

Edit: I have now found out that Caterpillar Changed the color from the Old Caterpillar Yellow, also known as Hi-Way Yellow, to New Cat Yellow on their machines in June 1979 and that could be the case with the engines too.

So if that's correct the engines would be Cat Hi-Way Yellow from January 1932 until June 1979, after June 1979 New Cat Yellow...except for the cases when the truck manufacturers had their own colors as listed below.
The old Cat Hi-Way Yellow were a brighter shade yellow than the New Cat Yellow wich is more to the mustard shade.

Cummins
H/NH and HS/NHS/NHRS ("Iron Lung") series 672 and 743 cui 50's and early 60's - Cummins Gold close to old Cat yellow
NHC250 - Cummins Beige (As mentioned above Tamiya Deck Tan XF-55 is close)
NTA370 - Cummins Beige
NTC350 - Cummins Beige
NTC400 - Cummins Beige
NTC475 - Cummins Beige
N14 - Black (cast aluminum valve covers are red and stamped sheet metal valve covers are black)
V-903 - Dark grey or Black
Signature 600/ISX CM570 - Red (may have chrome or black valve covers)

Detroit Diesel
Series 60 - Series60 Blue (Tamiya Medium Blue XF-18 is a good match)
6-71 - DD Alpiine Green (I use Testors MM Grun RLM 62)
8V71 - DD Alpine Green
12V71 - DD Alpine Green or Silver (usually turbocharged models)
16V71 - DD Alpine Green
8V92 - DD Alpine Green or Silver (usually turbocharged models)

Chevrolet
1940s to late 1950s - Medium grey
Late 1950s to 1963 I-6 engines Chevrolet engine blue, V-8 Chevrolet engine red (orange)

Ford
Ford 331 Flathead truck engine - Dark Spruce Green
Ford 337 V8 - Red
OHV Y-Block 1954 to 1961 - Red
OVH Y-Block 1961 to 1964 - Yellow
534SD - Ford Blue

GMC
GMC 1940s - Avacado
GMC late 1940s to early 1950s Dark Green
GMC 1950s Crimson Red
GMC 1960s V-6 Alpine Green, V-8 Red
Turbine - Red

International
V-800 - Metallic blue (Testors Model Master Auto Lacquer 1969 Ford Metallic Acapulco Blue is a good match)
MaxxForce - Dark Metallic Blue (Tamiya Metallic Blue X-13 is good)

Mack - Pre 1990 gold (Tamiya Gold Leaf X12 is good), Post 1990 grey, or blue / grey if equipped with an intercooler
ENDT675
ENDT676
ENDT865
4cyl (Mack AC) - medium grey
Super tip turbine - red

The Maxidyne engine colour was gold, the Maxiydyne truck could easily be identified by the gold dog on the hood.

The Thermodyne, Econodyne motors were all painted GREY, these had a chrome dog fitted.

If any other brand of motor was fitted, Cummins, Cat, GM-Detroit, then it would have a chrome dog fitted as well.

Exceptions, some truck manufacturer's use their own colors instead of the engine builders color


AutoCar - White through 1968-69 then manufacturer color

Ford - Black until 1965, Ford Blue until 1982, Ford Corporate Grey

Diamond Reo - Red

International - International Red (Testors Red 1203 is almost exact)

"International paid Cummins, Detroit and Cat about $25 per engine to have them all painted IH 2150 Red for many years. The practice ended in the '70's, as I remember, and we (International, my employer) pocketed the 25 bucks. Concerning the blue International V-800 in the Paystar, marketing decided that International's new big bore engines should be blue to distinguish them from the competition"

Peterbilt - White through 1984 then engine manufacturer color (there are exceptions as white engines can be found in trucks after 1984 and manufactures colors in trucks before 1984). Caterpillar was the last engine manufacturer to stop painting them white.

Kenworth - White through 1975 then engine manufacturer color (there are exceptions as white engines can be found in trucks after 1975 and manufacturers colors in trucks before 1975).

See what I mean? It gets confusing.

Jim

Hello Jim,

Impressive list. Yes, it can be confusing.

The series 60 Detroit's are a greenish blue color. I've got some photo's hanging around of the T600 and Cent. class Freightliner with Cat's and Detroit's. I may have a N-14 hiding somewhere. I'll see what I can dig up.