New RAM HD 1000 lb-ft

ksss wrote:
Back to the drawing board for what? I think I would wait and see what the Ram does going up Ike. If the Ram embarrasses GM and Ford, I would be inclined to agree. That has yet to happen on any run I have seen since they started the test, typically the Ram is number 2 or 3, but who knows maybe this is Ram's year. I think it will be interesting to see what the Ram fan boys say about the CP4 pump. Only Idaho has stuck to his guns. I bet there will be a rethinking about what a POS it is, now that Ram is using it.

There's a lot more to towing capability than the fastest up the hill - by that standard, every heavy spec Kenworth, Western Star, Volvo, etc., would be miserable tow trucks. At GCWR, they'll get embarrassed by a Ranger or CR-V also towing at GCWR...

If GM truly wants to compete (and perhaps they don't), they need to upgrade their chassis and axles to match Ram / Ford.

But, realistically, how many owners have CDLs to take advantage of Ford/Ram's tow ratings?

There ARE other changes to the engine than just "dial up the boost" - that's not how OEMs do it, nor would it pass their durability / warranty testing.

The new engine has a different head, stronger / lighter pistons, stronger connecting rods, and altered turbo geometry. All that just to gain 15 hp and 75 lb-ft of torque.

How many of us would change that much just to gain 15/75? Shows the much higher standards of OEM power validation compared to "tuners".

RobertRyan wrote:

ShinerBock wrote:

RobertRyan wrote:

No there is no demand for US Pickups, nice niche product though, that is "course not coarse." HD Pickup market Globally is a misnomer, very few are sold anywhere outside NA.What percentage Cummins who knows ? Your best bet for Cummins demand is the NA market

I would not say no demand because that would imply that there is none. There is demand and there are sales outside the US even if there few. Most regions cannot affordour trucks or their infrastructure do not support them.

Also, you cannot mix up global Cummins pickup demands for global engine demands which is what I was talking about earlier in the post you quoted. Cummins has a strong market share globally with their engines and just recently removed the EGR, "not DEF", from their global engines since global NOx emissions are less strict than US.

I did NOT SAY it had a strong market share globally, you just added that. As far as demand for HD Pickups globally extremely tiny, not nonexistent, never said that
They can afford and the infrastructure does support your Pickups, but they are not what they want

You stated "No there is no demand for US Pickups" above. You said no demand(not tiny demand) which is false. According to Ford, 98% of their fulls size trucks are sold in North America which leaves over 21,000 units sold outside NA.

Not a big number compared to the over 2,900,000 trucks sold in the US in 2018, but considering the small amount of less than 238,000 commercial vehicles(aka pickups) sold in Australia in 2018, that is not bad. It probably would have made it in the top ten Australian pickups with that many units sold.


There is demand, just not big because they can't afford our big trucks, the can't afford the fuel for them, they have increased tax on engine size, and/or most do not have the infrastructure to support them. Fact is, the market for our full size pickup is growing in Australia. Just ask the guys at American Vehicle Sales in Victoria. Well over $120k for a full size half ton pickup that we pay $40-50k for? I feel sorry for you guys. That is like us paying $90k for a half ton in US dollars.

twodownzero wrote:

ShinerBock wrote:

twodownzero wrote:

ShinerBock wrote:
So since Cummins increased power output by increasing boost, does than mean the engine will fall apart just like people say it will if you increase power by doing the same with a tune?

33 psi isn't an increase anyway; my truck is 14 years old and makes that. It might be more than the 4th gen trucks were making, but there's nothing about that boost pressure that'd make me nervous. But as people above mention, total boost doesn't tell the whole story if the rest of the turbo system is out of whack.

It is an increase from stock 6.7L. Before I deleted and tuned my 2014 CTD, it peaked out at 30 psi and fall after that. After delete and tune it will go to around 38 psi. I plan on putting compounds later on this year and we will see where it goes from there.

I wonder how much actual airflow increase 3 psi makes? Boost in and of itself isn't going to increase engine output much, if anything, anyway. But if it facilitates burning more fuel without increasing emissions to unacceptable levels, then there can be a significant change in output. On a gasoline engine, fuel has to be in near-perfect proportion to air, so this is not the case, but with diesel, more boost might make for slightly better/more complete combustion, but more boost alone doesn't increase the actual fuel amount delivered to the engine (which is ultimately necessary for any significant power output increase, unless the current combustion is incomplete/poor).

I believe it has more to do with emissions and keeping EGT's in check at higher power levels when coupled with emissions devises. The current Cummins can easily make more power(mine is around 515rwhp on its highest level on stock turbo and fueling), but doing while staying within emissions is another thing. That is where the increased boost and better fuel atomization with the higher fuel pressures of the CP4 come in.

ShinerBock wrote:

RobertRyan wrote:

No there is no demand for US Pickups, nice niche product though, that is "course not coarse." HD Pickup market Globally is a misnomer, very few are sold anywhere outside NA.What percentage Cummins who knows ? Your best bet for Cummins demand is the NA market

I would not say no demand because that would imply that there is none. There is demand and there are sales outside the US even if there few. Most regions cannot affordour trucks or their infrastructure do not support them.

Also, you cannot mix up global Cummins pickup demands for global engine demands which is what I was talking about earlier in the post you quoted. Cummins has a strong market share globally with their engines and just recently removed the EGR, "not DEF", from their global engines since global NOx emissions are less strict than US.

I did NOT SAY it had a strong market share globally, you just added that. As far as demand for HD Pickups globally extremely tiny, not nonexistent, never said that
They can afford and the infrastructure does support your Pickups, but they are not what they want

ShinerBock wrote:

twodownzero wrote:

ShinerBock wrote:
So since Cummins increased power output by increasing boost, does than mean the engine will fall apart just like people say it will if you increase power by doing the same with a tune?

33 psi isn't an increase anyway; my truck is 14 years old and makes that. It might be more than the 4th gen trucks were making, but there's nothing about that boost pressure that'd make me nervous. But as people above mention, total boost doesn't tell the whole story if the rest of the turbo system is out of whack.

It is an increase from stock 6.7L. Before I deleted and tuned my 2014 CTD, it peaked out at 30 psi and fall after that. After delete and tune it will go to around 38 psi. I plan on putting compounds later on this year and we will see where it goes from there.

I wonder how much actual airflow increase 3 psi makes? Boost in and of itself isn't going to increase engine output much, if anything, anyway. But if it facilitates burning more fuel without increasing emissions to unacceptable levels, then there can be a significant change in output. On a gasoline engine, fuel has to be in near-perfect proportion to air, so this is not the case, but with diesel, more boost might make for slightly better/more complete combustion, but more boost alone doesn't increase the actual fuel amount delivered to the engine (which is ultimately necessary for any significant power output increase, unless the current combustion is incomplete/poor).

Me Again wrote:

IdaD wrote:


I think it's still a steaming pile of ****, FWIW. Even if they've gotten somewhat more reliable in newer iterations, they still grenade the fuel system when they fail which makes it a much more significant fix compared to a failed CP3 unit. It's just a bad design, end of story.

There have been CP3 failures that grenaded the whole fuel system.

Yes CP3 pumps fail... No they do not contaminate the entire fuel system when the failure occurs.

Huntindog wrote:

time2roll wrote:

Huntindog wrote:
All true BUT....... Warranties expire.
I have never seen a pump yet that did not fail at some point. When the CP4 fails, it sends debri thru the entire fuel system. Everything from the injectors to the tank is affected. Over 10K to fix it. The pump itself is less than 1K.

Would that be reason to replace the pump before it fails?

I have considered it. Still might do it.

It is about new truck time though..

I would install a lift pump.

twodownzero wrote:

ShinerBock wrote:
So since Cummins increased power output by increasing boost, does than mean the engine will fall apart just like people say it will if you increase power by doing the same with a tune?

33 psi isn't an increase anyway; my truck is 14 years old and makes that. It might be more than the 4th gen trucks were making, but there's nothing about that boost pressure that'd make me nervous. But as people above mention, total boost doesn't tell the whole story if the rest of the turbo system is out of whack.

It is an increase from stock 6.7L. Before I deleted and tuned my 2014 CTD, it peaked out at 30 psi and fall after that. After delete and tune it will go to around 38 psi. I plan on putting compounds later on this year and we will see where it goes from there.

ShinerBock wrote:
So since Cummins increased power output by increasing boost, does than mean the engine will fall apart just like people say it will if you increase power by doing the same with a tune?

33 psi isn't an increase anyway; my truck is 14 years old and makes that. It might be more than the 4th gen trucks were making, but there's nothing about that boost pressure that'd make me nervous. But as people above mention, total boost doesn't tell the whole story if the rest of the turbo system is out of whack.