Just curious - I was following another thread that send me to CAT's site. They list a version of a 3116 with 300 hp and 732 foot pounds of torque. Any economical way to get that out of the 170hp A3 version? 3116
short answer: no. not-so-short-answer: 3116/3126 Cats rated higher than around 210-ish hp had different pistons and [obviously] different injectors and turbo. so at the very least, you'd be looking at injectors, turbo, and adjusting the fuel settings. and to do it 'right' you'd need different pistons.
pistons may not be necessary, but they are different in higher rated applications, so...
not to mention that the 3116/3126 MUI engines are parent bore blocks. So no sleeves to change. This means the the block needs to be plate stressed and rebored to provide round cylinder walls. The 3116 can be tuned sort of if you know which screws to turn. The most important thing to know about these engines is that the sync. rack that runs the injectors can often stick. These parts are not super expensive but require special tools and very precise adjustments. I would make friends with a cat mechanic and you should be ok. They are a good engine, but maybe I am biased. Yellow puts food on the table.
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Hmmm, that's interesting. I didn't know there was that much performance potential in those engines. Even if it's not in that engine, it's still in the 'family'. If I was ready to give up the multifuel though, it'd probably be a Cummins 5.9 swap in an A2 for me...
Some motor homes and trucks have a 3116 factory hp of 350 and these motors will last as long as a 170 hp. I adjusted the rack on an a3 that only had 700 degree exhaust temp about 1 1/2 turns and now goes to 1000 and it is night and day. Almost fun to drive.
300 hp CAT 3116
