Caterpillar D2 on Dyno

Breaking in the engine on the dyno. I think it could use several hours of this kind of work. Check out tinker’n Bruce on TH-cam for more dyno action. (LINK BELOW)
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Photography by Paul Heaton.

[@bevanwilson5642]

The old gear always runs better after a good flogging

[@Recommended_by_Fred]

She made 3 more horsepower after the first dyno pull. I need to really work the crap out of this thing… I got to put my thinking cap on and figure something out.

[@RomeKG471]

1947-up 4U series D2.

[@Recommended_by_Fred]

Correct sir!, 4u6123 to be exact.

[@RomeKG471]

That would make it a 1953 then.@@Recommended_by_Fred

[@Recommended_by_Fred]

@@RomeKG471 yes, it was one of the last ones of the short track models. Shortly after this one was made they lengthened the tractor for clutch access/ optional oil clutch. More horsepower and several more upgrades. Hope you enjoyed the video, you sure know your cats!

[@RomeKG471]

True, yes thanks. I have a 54 5U with straight blade and pto, also a Diesel Seventy-Five, 47 6U & 57 7U D4's, a 61 17A D7D, plus a few others.@@Recommended_by_Fred

[@Recommended_by_Fred]

@@RomeKG471 your on the forum sometimes on ACMOC? I’m there on occasion as d2 fred

[@scrotiemcboogerballs1981]

Awesome that work out on the dyno was needed on the ole d2 thanks for sharing have a great weekend buddy

[@Recommended_by_Fred]

I thought it was funny when all the carbon from before the engine was overhauled that had coated the inside of the exhaust pipe started to burn out. People took off running! It was raining hot carbon chunks everywhere. It did put some cigar burns in my upholstery job.

[@johngibson3837]

Nice one mate sounded sweet and neat Dyno units

[@Recommended_by_Fred]

@@johngibson3837 thank you! I’ve got a lot of time in this engine! Good to see it running’s again.