Hello. new to this forum. Not new to forums in general. I am on here on behalf of my father, he does not know how to work a computer. He has an 06' T600 with a CAT C-15 ACERT engine twin turbos, 13 speed trans, ALL STOCK NO MODS! He uses his truck for local heavy hauls here around the puget sound in WA and often makes trips to portland and further south as well as Boise ID and Billings MT. First and foremost he wants to know if swapping to a larger single turbo would be beneficial, the twins seem to keep his engine oil temp higher then he would like- 240 degrees pulling long hills, like cabbage patch hill in OR. And he has been advised not to install an oil cooler, which i don't understand. How the heck would installing an inline engine oil cooler mess with anything? it wouldn't! Secondly, he's concerned with horsepower, right now it has 500HP. Now this is strange, the engine oil cooled down ALLOT after he had his truck pumped up to 500 HP from 450, it used to stay between 200-220 and jump to 240 sometimes, now it stays between 190-210 and never gets above 220. How does that work? thats all for right now. And thanks in advance for the intelligent replies.
2006 Kenworth T600 C-15 ACERT. TONS of questions!7
Discussion in 'Kenworth Forum' started by crf450ish, Dec 29, 2014.
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Switching to single turbo? Sure, if he doesn't mind losing that quicker HP/torque gain from the narrow channels on the dual. Also less maintenance breakdown issues on single screw, and toss in an aging c-15 with dual screws? ehmm...I'd just as soon avoid any cat engine until they get their business straight with the new CT series and completely write off the c15. But it doesn't sound like he has a choice so I would opt for the single.
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Keep the single, if he does anything a PDI tune would be good. The Accert engine is actually a much better set up than the older 6NZ that everyone loves to rave about. I'd just leave it alone. CAT does not manufacture a road engine right now. International does, they are the maxxforce painted yellow, YUCK! I'm not to sure about the cooling, but it seems like those are normal temps.
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If keeping the temps down is the main goal I would leave it alone. The temps you mention are normal and the C15 was designed to run in that range, so running it cooler than intended may bring other problems. If I had turbo problems I would switch to a single, if the two are just fine right now then you would be wasting money with no benefit. I agree, the C15 gets a bad rap from the old school it doesn't deserve.
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International no longer produces any maxxforce products, and hasn't for a while, especially since it fell under a class action lawsuit and in the same boat as Cat with it's c15. Though international does still manufacture their duramax engines with the SCR/carb compliance, there's a whole world of difference between an engine expected to pull 40k and one designed to pull 80k and they both have to be close to the same dimensions. It's not quite clear how similar the c15 and maxxforce were to one another since all class 8 engine share many industry standard designs.
Another quick point is that Cat and INT have partnered and that is clear enough in body design + frame building plus their open countenance towards one another.
So long as the fan is kicking over at 240/250 everything is cool in the neighborhood, but a single screw would do a better job of preserving that engine. -
the fan is supposed to cut in at 217. leave the twins alone. seems as if he doesn't have any problems. -
thanks guys. Got more questions.....transmission in truck now is the low torque model of 13 speed, eaton fuller and Kenworth does not recommend going above 1650 torque. Thinking about boosting the HP up to 550 which would increase the torque to 1850. Guys at kenworth shop have said they've seen it done on other customers rigs and have not had them complain. Need some feedback on this. Anyone out there have my same truck with the low torque style tranny that has more then 500HP? Ive been doing allot of checking and research and am considering swapping an 18 speed...
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You can bump the horsepower to 550 and your current 1650 rated transmission will be fine - just don't be dumping the clutch and popping wheelies. Dealer type places KW, Pete, or CAT will not do that sort of uprate - you'll have to find a private individual who will.
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Maxxforce 15 -- Cat (stopped production in 2013?)
Maxxforce 13 -- Man (stopped production in 2014)
International N13 -- Man w/ Cummins SCR (2015+) -
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