waynec
stikpusher
Engine compartment should be the same color as the troop/drivers compartment, Light Green or White. I remember the engine itself being Blue.
well you are younger than i am.
The engine color could vary depending on the version of the papa chuck. I don't recall if the Tamiya M113 is a straight M113, which used the Chyrlser 75M V8 gasoline engine, or an M113A1 with the 6V-53 Detroit Diesel engine. Different engines could be different colors.
Here is an M113A2 transmission painted in a gloss sea foam green.
And here is an M113A2 engine (same basic engine as the A1) in a faded, flat light OD green color.