Cummins engine that never was..

[Hay Dude]

The Cummins KTA 23 is the biggest high speed diesel out there... and its already a square design (bore as large as the strokr is long) to keep piston speed in check. Cat C27 is two C13 cylinder banks on a common crankshaft (V12)

The 70 ton Komatsu D-375A uses a license built Cummins KTA23 inline 6, the 100 ton D-475 uses a license built Cummins QSK30 V12.
The 70 ton Liebherr PR776 uses a V12 as well.

The Fiat Allis FD50 uses a Cummins VT-1710 V12

I honestly dont know any other manufacturers building D10 and D11 sized dozers...

Thats why I included tugboats & locomotives.
I actually thought we were talking truck & gen set diesels, then dozers came on line….

Next thing you know we’ll be talking about the space shuttle lol

 

[Hay Dude]

That all is true for the economy diesels sold in the USA next to the heavy duty inline 6es:
Cat had a 3208 and a 3406. Cummins a V903 and an 855. V555 and L10. Those were all oversquare designs redlining at 2600 to 3000rpm, usually not with wet cylinder liners, built as a cheaper alternative to their undersquare inline 6 counterparts.

Other V8 diesels such as the Mack E9, Scania DS16, Cat 3408, 3508, 3608, are built like the Volvo D16, Cat C18 inline sixes: All undersquare designs designed to be rebuilt and live on, unlike the aforementioned oversquare economy engines.

In over the road markets, V8 diesels got a bad name because they were designed to be a cheap and disposable alternative to the inline sixes. In the industrial market, the V8 was built asgood as any inline 6 so the V8 didnt get that reputation...

In OTR and farm tractors, my main area of interest/use, I’ll take an undersquare I-6 with wet sleeves all day long.

 

[BravoXray]

Cat had a 3208 and a 3406. Cummins a V903 and an 855. V555 and L10. Those were all oversquare designs redlining at 2600 to 3000rpm, usually not with wet cylinder liners, built as a cheaper alternative to their undersquare inline 6 counterparts.

The CAT 3406, Cummins 855 and L10s wet wet liner engines.

 

[BravoXray]

Nevermind what CAT thinks. They are in business to make money off customers, not give them what is best for the customers bottom line. CAT is most expensive diesel to own/operate.
Plenty of other brands of huge dozers, tug boats and locomotives running much bigger in lines.

HD

The only locomotives powered by inline engines that I know of were Fairbanks-Morse and Lima (MLW). Since the 60s, all GE and EMDs were powered by V engines, even the EMD SW switchers.

 

[Renze]

In OTR and farm tractors, my main area of interest/use, I’ll take an undersquare I-6 with wet sleeves all day long.

Me too, but i dont have a preference for inline 6 or V8. Here in Europe the reputation of V8 diesels wasnt spoiled by oversquare higher rpm economy designs.
We didnt have expensive naturally aspirated 14 liter Cummins NH230 engines in the late 70s either, we had that horsepower from a Daf DHT825 turbo engine at 8.25 liter in 1976. In 1959 we had 165hp from a 5.75 liter engine, which was a marvel in its day, for power density..

Cummins built their VIM/VINE/VALE v6 and v8 for the British market in Darlington UK but never sold right, it was limited British market, and export to Mexico. They gained traction once they sold the L10 and B and C series from the UK.

The Cat 3208 was found in the 225 excavator but it wasnt a bad engine at all at moderate rpm and low power. It wasnt an oversquare engine either.

https://xr793.com/wp-content/uploads/2020/07/1970-Catepillar-3208-Engine.pdf

You can see the brochure, its an engine aimed to get medium duty truck owners with Ford 427 or IH V446 to adopt a diesel engine.