[bwdt]

Can you imagine a 30% increase in torque on a Cummins engine and what that would do to efficiency? Wow!

Two-piece con rods claimed to boost low-end engine torque by 30%

Utah's Transcend Energy Group claims it has a relatively simple and cheap way to dramatically increase the torque output of combustion engines, simply by replacing the standard connecting rods with new two-piece designs with a secondary joint.

newatlas.com

 

[MoparProud]

They don’t. It’s a gimmick.

 

[NCC74656]

cries in 47RE...

Seriously though I don't see how our connecting rod could possibly change that kind of torque. If you stroke it sure, but just changing the type of rod. Your total travel distance is going to remain the same.

 

[marco610]

The effort with higher hp Cummins is to get rid of rod angle not make more.

 

[bwdt]

Good point.

 

[NCC74656]

Okay I can see the rod angle. So you would have less losses due to lateral loading. You would also have more stable cylinder positions as they're not trying to cantalever into the walls.

So we'd be talking about some very low percentage gains on efficiency. Which would make sense. With higher RPM that would be amplified, so as to allow for more stable operation at 4000+ RPM.

I suppose that makes sense, were making gains indirectly on horsepower