That D4 Sound

Every Cat model has its distinct sound, which can be identified a mile away. Opinions differ about the best sounding Cat model, but I vote for the 4 cylinder bark of a D4.
This looks like a nicely restored original D4, but was in fact assembled from parts of 2 tired machines.
Old Construction & Surface Mining Equipment show,
in conjunction with the Stumptown Steam Show, New Athens, OH

[@kirkpalmer1709]

This is probably the best running 50's era D4 i've seen on utube.

[@1965ace]

Just bought a 1956 D4 in excellent shape spent the day on it and I'm in love!!

[@SteamCrane]

Congrats!
They're wonderful machines.
Speaking of Cats, we have a Maine Coon and a maybe 50% mix. Wonderful friends.

[@Caje-zf8md]

Heck, I've been looking for a 7U or a D4C for several years now. They're like a '68 Z-28 Camaro: everyone wants one but can't find one.

[@billoxley5315]

Had a 48' 7 U for 18 yrs. Great tractor. Moved up to a D6 9u.

[@M123A1C]

Great video, I have a 1953 7U series D4 myself.

[@tommeymangat2310]

In 1967 I bought 1 for 400 dollars I have 5 running in my sugar cane farm

[@SteamCrane]

Hard to kill a big hunk of iron! Love them!

[@Vance_Nickerson]

Love to hear my D47U grunt.

[@hamish2202]

Old d8 nothing beats 6 cylinder diesel sound especially the ford 590e

[@soundadvicesomewhere9027]

Good Sound!!

[@Quadflash]

And, that's how it's done without Grade Assist. Sweet D4!!

[@davecalvo1939]

The 70's era D-8 Cats sound the most bad ass I think, they don't make engines like those any more

[@billmoran3812]

Dave Calvo love the sound of those old naturally aspirated Cats. They could lug down almost to a stop without stalling. I remember the cable controlled blades from the 40's and 50's.

[@heartland96a]

I know folks that ride Harley's love straight pipes, is it the same reason that dozer operators rarely have a muffler as well ? Neither seem to both wearing any hearing protection and operate their machines for hours at a time .

[@charlienorton2337]

heartland96a these old cats didn’t come with mufflers

[@soupertrooper3864]

​@@charlienorton2337Yes they did lol

[@charlienorton2337]

@@soupertrooper3864 Nah early ones from the factory came with no mufflers

[@soupertrooper3864]

@@charlienorton2337 The one in the video definitely came with a muffler

[@OKCrawlinJeep]

I’ve searched all over the net and cant find what lube to use in the injector pump could you point me in the right direction? Just about to get my 1955 running. - Thanks

[@SteamCrane]

Check with Squatch253, he is actively working on several D2's.