c16 vs c15

I was being sarcastic. I know what I have. Also, the 6nz is NOT a c15. It's a C-15. Big difference.

 

Nobody said the 6nz was a junk motor. What we are saying is the 14.6 motor will never pull like a 15.8 motor. You can build your 6nz to massive amounts of horsepower just like you can a 7cz or a 1MM HOWEVER you cannot build the torque into them like you can a 15.8 motor because of the shorter stroke. the C-15 that you have was a decent motor aside from the headgasket problems, but it will NEVER in stock form or a built form run with a 15.8 1MM, 5DS, or 7CZ...now if you REALLY want to get technical about everything the 5DS and 1MM motors ARE NOT C16's they're considered 3406E models, the 7CZ was a C16 same BASIC concept though same stroke, and bore just a different block and head as the 15.8 E models.

NOW THEN, for you stating that you can turn your 6NZ into a C16 yes you can, as superhauler and myself have stated though there is A LOT more that goes into it than what you think, and the cost of the crank you'll need alone if you can't find a used one is around I believe $5600 or so might be more than that the last 1MM crank I seen a price for was $5,585.

Now then Mr. Haney has apparently been banned since the last time I have been on here, he has a C16 that is built, I keep thinking to the tune of somewhere around 1300 horse, and 5400 ft.lbs.tq to the flywheel and puts down 1100 to the ground, I'm pretty sure that is over in the performance section of the forum you'll have to do some digging, When was the last time you've seen a 6NZ lay down those kind of torque numbers? Horsepower numbers yes I've seen, never seen them put that kind of torque to the rollers though.

Now if you REALLY want to talk about one of the best engine designs CAT has ever made...take a look and do some reading on the ACERT cats. The design on those motors is golden, only problem was the EPA went and screwed it up. After deacerting them I hear those will walk a 6nz, even heard a couple tales of them walking a C16 but I've yet to see it, guess I'll find out when our Acert goes down for a major and we deacert it.

Keep in mind an old saying from famous car builder Carrol Shelby since you're still hung up on all this, HP sells cars, torque wins races. and there's a big difference between the torque you can build into your 14.6 and what you can build into my 15.8

I'm waiting for Wore Out to chime in here. He's got experience with both motors, I'm sure he can set the record straight.

 

I understand what you're saying and I've read a lot of Mr. Haney's posts here. I'm not sure what he had but I do know he said his first choice in a motor would be a 6nz. I'm not looking to out do anyone. I know I've got a good motor. I'm just looking to make it the best it can be (performance&mpg) without making hardware changes except maybe a turbo if necessary.

 

Yes, you can put a 7CZ file in a 6NZ and get 600 horsepower. No, 6NZ with a 7CZ file is not as strong torque-wise as a normal 7CZ. They're from the same generation of engines and the ECM's are both 70 pins, and they have many interchangeable parts, but the 7CZ is roughly 10% larger displacement, hence the reason why it produces more torque than a 6NZ with a similar program. It's quite frankly just a bigger engine.

This forum strictly prohibits discussions of engine modifications, and I would really hate to see a thread like this shut down. As an owner of a C16 myself there is some valuable information on this thread, so please take engine modification discussions to other forums.

Everyone please continue stating your opinions and experiences with the C16 and other 3406E 15.8L engines without talking about any modifications.

 

If i had a 6nz, i would leave it the way but rate up to 550 hp and 1850 lb ft. Also put free flow muffler.

 

That's currently what I have and will probably leave it. I was mainly looking at ways to improve mpg really

 

If you're going to do the turbo, do the manifold as well, I still to this day have seen many people put a bigger turbo on, and leave that restrictive factory manifold on the truck and have NEVER been able to figure out why it is done that way. Keep in mind, about the only way to save fuel is to increase the power in some way or another aside from your PM's and making sure everything is as it should be CAC not leaking etc.

Guess it's been a while since I was on here didn't realize we couldn't talk about swapping parts, and modifiying motors anymore so I'll pipe down don't need to get this thread shut down either.

Information on a C16 and a 15.8 E model are hard to come by for anybody that is trying to find that information, it takes a lot of digging and searching to find what little information is out there on these motors. They're rare probably because of weight and cost (10k+ option) if I remember correctly. Either way I've got one I'm happy with for the most part I'll be happier when I get through with her doing what I want to do but that's about a month or 2 off yet right now I'm making beer money...not motor money lol.

 

I wasn't aware you couldn't discuss this. We aren't talking modifying or deleting emissions which is all I'm aware can't be discussed. Am I wrong?
If it is, I'll delete my posts.

 

The thing that most guys don't realize is a 6NZ with the right 550 file in it, stock turbo, and if your lucky enough to have a decent set of stock cat injectors will do 600 at the crank.

 

That's what I was trying to say on the other thread. Anything to do with performance has resulted in deletion of the thread.