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Old 08-20-2015, 12:44 PM   #1
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Caterpillar nomenclature

Just curious if there is any rhyme or reason for the numbering of their engines. I figured that the last number is the number of 3208. But do the first 3 numbers in that designation mean anything or are they just some arbitrary model number?

Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B
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Old 08-20-2015, 01:58 PM   #2
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3- diesel engine
Next two numbers: liters per cyl
last: #cyl

Works on 3116, 3126, 3176, 3196.

But does not apply to 3208, 3406, 3508 etc. Or the earlier ones like 343, 353, 379 etc

So basically just a random model number.

New ones c7, c9, c12, c18, c32. Those make sense. Just displacement for total engine. Just wait til they have to change the engine but keep the displacement!!!

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Old 08-20-2015, 03:41 PM   #3
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I've wondered that myself. We have a ship service generator that's a 3412. There are a couple of 16 cyl cats we use to run our unloading system, but I can't remember the model numbers.
Just be nice to each other, dammit.
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Old 08-20-2015, 03:47 PM   #4
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Ohhhhh....I thought...

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Old 08-20-2015, 06:07 PM   #5
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Funny RT! Here I thought I would be able to answer this question and broke out my engine manuals. Nothing! No explanation of the serial numbers. My port engine is: 1Z12594 and is a 375hp, 3208 T/A
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