Good news Cp4 to Cp3

[lpennock]

It ran 26K psi on the 6.7. I don’t recall any crazy changes to it’s design for that.

Aren't the 10mm strokers able to handle 30K+?

 

[Wayne M.]

What an admission!!
Betcha the retrofit is a whole package with a rail, sensors, harness and the whole she bang, along with the flash. Are the injectors different pre and post CGI engine?

 

[TFucili]

What an admission!!
Betcha the retrofit is a whole package with a rail, sensors, harness and the whole she bang, along with the flash. Are the injectors different pre and post CGI engine?

Pretty sure they mentioned that they were in one of the 2019 rollout videos.

 

[sag2]

I don't find anything about it in the parts system. The demand really isn't that high and there are parts in the system with no backorders.

 

[Blackbrush]

Trying to order a '20 just before it closes 8/6...... Roll of the dice in multiple ways I guess.

 

[SnoKing]

Trying to order a '20 just before it closes 8/6...... Roll of the dice in multiple ways I guess.

I would wait! You would be able to buy a in stock left over 2020 at a bargain. Or maybe a 2021 with a CP3 pump.

 

[Jim W]

Side note on the CP4 fuel pump!
My wife's VW a 2011 TDI uses a CP4 fuel pump! She received a 100,000 mile replacement warranty on her car, if the pump failed before the 100,000 mile mark by VW! So, far she has 70,000 miles on her car.

BTW I'm BACK!

 

[Cummins12V98]

No one knows how a CP3 that is designed to maintain 23K psi performs in an application that demands 30K psi.

All I heard was the CP3 couldn't deliver the pressures needed and that is why they HAD TO go to the 4.

 

[R.Taylor]

No one knows how a CP3 that is designed to maintain 23K psi performs in an application that demands 30K psi.

I believe it's as simple as stroking the pump as Industrial Injection does with their 10mm stroker CP3 pump (which is what they include in their CP4 to CP3 kit). I also noticed that on their website that the kit is out of stock at the moment..... Must be popular.

 

[TFucili]

I saw a video of a hopped up CGI 6.7 that had a CP3 conversion, and I think they also mentioned different tooth count on the drive gear. Can't remember who it was, though.

 

[JR]

I saw a video of a hopped up CGI 6.7 that had a CP3 conversion, and I think they also mentioned different tooth count on the drive gear. Can't remember who it was, though.

Off topic, but I ran into an old aquaintance at the local truck pulls last year. He was running a Denso HP4 - the ones the DMax runs, on his 6.7 ISB. He said they make retro kits to upfit directly to a 5.9 and a 6.7 and are capable of 800-900 hp off a single IP. No clue on reliability, but then again who thinks about that in that business?

 

[R.Taylor]

Off topic, but I ran into an old aquaintance at the local truck pulls last year. He was running a Denso HP4 - the ones the DMax runs, on his 6.7 ISB. He said they make retro kits to upfit directly to a 5.9 and a 6.7 and are capable of 800-900 hp off a single IP. No clue on reliability, but then again who thinks about that in that business?

But I don't see where you can go from CP4 to HP4 on 2019+ trucks.. Looks like they are for CP3 equipped trucks.

https://donerightdieselperformance.com/product/denso-hp4-retro-fit-kit/

 

[JR]

But I don't see where you can go from CP4 to HP4 on 2019+ trucks.. Looks like they are for CP3 equipped trucks.

https://donerightdieselperformance.com/product/denso-hp4-retro-fit-kit/

I've honestly not looked into them for lack of interest but I wouldn't be surprised.

If I was paying out of pocket I'd be opting for a CP3 anyhow. They've proven to be pretty reliable buggers.

I think the reason for the HP4 is their fueling ability without having to run dual pumps.

 

[gator-guy]

I've been a long time lurker of TDR but this thread finally convinced me to join. I've been hesitating buying a 19 or 20 and it appears that my hesitation was warranted. My '14 only has 116,000 and I have another daily driver so I'm hoping I can wait a little longer for Ram/Cummins to figure this out. Reliability is the most important thing for me out of my truck and the CP4 has had me scared.

 

[Cummins12V98]

gator-guy welcome aboard!!!

 

[gsbrockman]

What an admission!!

What admission? The source has yet to be revealed......

 

[Ozymandias]

But I don't see where you can go from CP4 to HP4 on 2019+ trucks.. Looks like they are for CP3 equipped trucks.

https://donerightdieselperformance.com/product/denso-hp4-retro-fit-kit/

And only with a programmer - it is NOT a stock one to one replacement.

And like JR mentioned, reliability is not the goal of the high horse power crowd.

 

[Signal73]

What admission? The source has yet to be revealed......

this is true, China could of got bob 4x4’s TDR logon info from when they hacked into his Tik-Tok account!!!

 

[Ozymandias]

Aren't the 10mm strokers able to handle 30K+?

The question is - for how long can they do it?
Sure one can test out the design limits, but i wont spend a cent to do so.

I strongly don't believe that Cummins changed the pumps for cost reasons, that is nonsens on a 90K $ Truck to have maybe a difference of 50$.

 

[TFucili]

Material Cost Management=MCM=Make Customers Mad. Cummins is not a bunch of boy scouts, or some benevolent organization. They are a typical corporation, answering to shareholders on a quarterly basis seeking to maximize profits. They are perfectly capable of penny-pinching themselves into trouble like so many corporations. I believe that 1,000%.

And, YES, it can cost them more in the long run. Never stopped companies before.