New 6.4 ? - Diesel Forum

jaystruck · 06-30-2006, 10:32 AM

I found this piece of info on the wed. Any truth to it ? [img]/ubbthreads/images/graemlins/shrug.gif[/img] If it is I hope they learned from the 6.0 not to rush it to the end user... [img]/ubbthreads/images/graemlins/smirk.gif[/img] Take a look..It is a pdf File

<u>http://www.forddoctorsdts.com/bulletins/2007psd.php</u>

FamilyRide · 06-30-2006, 11:06 AM

Have you been sleeping? LOL [img]/ubbthreads/images/graemlins/biggrin.gif[/img] JUst kidding, but yes, then intro of the 6.4 has been known for quite some time. A lot of detail hasn't been known, but direct injection and twin turbo design has been.

Thanks for posting the link. I think that's the first document I've seen on it. Everything else has been via media channels.

jaystruck · 06-30-2006, 12:46 PM

From the dyno it shows, you think that with the 2 turbos it would have more HP gain. The tq gain is great, but I still would like to see the hp jump the 400 range.

AutoJim · 06-30-2006, 01:18 PM

They aren't twin turbos in the "traditional" parallel sense. It's a dual-turbo series arrangement like the VT275 V6 in the LCF trucks. Lots of fluid dynamics hand-waving about compression ratios and mass flow rates and response times went into determining that two smaller (not twin: they're different sizes) turbos in series worked better than one big one on the VT275, and I suspect the same is true for the 6.4L.

swaldrep · 06-30-2006, 01:36 PM

I went to my local dealership this past week and the parts department had a display model of the new 6.4.

FamilyRide · 06-30-2006, 01:45 PM

[ QUOTE ]
From the dyno it shows, you think that with the 2 turbos it would have more HP gain. The tq gain is great, but I still would like to see the hp jump the 400 range.

[/ QUOTE ]

That would mean massive torque or higher operating RPM range. Either one means something has to be built to handle it, and for what these trucks are designed for (not racing or sleds) more torque at lower RPM's (higher HP but not crazy RPM's) does the job. HP is just a calculation of torque/work at a given speed. Torque is king. [img]/ubbthreads/images/graemlins/laugh.gif[/img]

Larry202br · 06-30-2006, 02:49 PM

Do the Piezo injectors mean no more High Pressure Oil Pump?

jchadw · 06-30-2006, 04:00 PM

On page 12 of the document is states that they will be using electronic actuation. The HPOP is the hydraulic actuation that they are talking about. Sounds like they are getting rid of it.

GrampyJim · 07-01-2006, 05:42 AM

Yes, there will be no more high pressure oil system.... Instead of using engine oil to produce 3000 PSI of hydraulic pressure, there will be a fuel pump that needs to produce in excess of 20,000 PSI of fuel pressure.

The reasoning behind the changes... the 6.0 relied heavily on "pilot injection" to reduce exhaust emissions. Unfortunately, in too many cases, the mechanical portion of the injector couldn't keep up with the electronic signals that the FICM was sending. The piezo injectors promise multiple injection cycles allowing for "shaped" combustion events, reduced emissions (both particulate and gaseous)and other environmentally friendly conditions.... Dang, forgot where I was - clean air don't matter...

Field testing can only go so far.... And, the 6.4 is going to be a real departure from what PSD techs are used to...Piezo injector technology is still relatively new... All we can do is wait and see...

FWIW, I see the turbo charger system is still vastly misunderstood...

JESSE 1 · 07-01-2006, 10:40 AM

If the companies can give us clean, high performance diesels I'm all for it. One of the main reasons that diesel cars never caught on is the black smoke on acceleration. All anyone has to do is see the amount of soot deposited on buildings and realize that it also goes into your lungs. I plan on ordering a new '08 F-450 SuperDuty within a year. I think I can live with the new horsepower ratings and a cleaner engine!

444-4D · 07-02-2006, 02:14 PM

[ QUOTE ]
FWIW, I see the turbo charger system is still vastly misunderstood...

[/ QUOTE ]

I made this statement about 6 months ago. How close did I get?

[ QUOTE ]
I don't "know" how they are going to arrange them but I'm going to guess.

air cleaner >> large compressor >> small compressor>> CAC >> intake manifold >> cylinder >> exhaust manifold >> small wastegated turbine >> large turbine

[/ QUOTE ]

dzltech · 07-12-2006, 04:47 PM

[ QUOTE ]
From the dyno it shows, you think that with the 2 turbos it would have more HP gain. The tq gain is great, but I still would like to see the hp jump the 400 range.

[/ QUOTE ]
Remember diesel=torque,who cares about horsepower,that is the problem with the 6.0.higher hp,higher cylinder presures and turning a diesel motor to 3500-4000 rpms=trouble.

dzltech · 07-12-2006, 04:50 PM

[ QUOTE ]
Do the Piezo injectors mean no more High Pressure Oil Pump?

[/ QUOTE ]
exactly it will be common rail injection with fuel pressure at 30,000 psi-can you say runaway engine

MackE7 · 07-12-2006, 05:15 PM

You couldn't give me a 6.4. Look at the picture of the engine on page 11. The entire top of the engine is full of stuff. Stuff that will break and give trouble. Maybe I am just grumpy from working on my neighbors '96 PSD.

Phil G. · 07-15-2006, 06:46 PM

[ QUOTE ]
I plan on ordering a new '08 F-450 SuperDuty within a year. I think I can live with the new horsepower ratings and a cleaner engine!

[/ QUOTE ]
I love it! Step right up folks; be the first guinea pi...I mean lucky owner to have one on your street. You'll marvel at the detail to reliabililty, the low cost of filters in the first year and yes, as an added bonus, you'll get to witness the poor techs fumbling their way through the learning curve of this exciting new engine!! I think I'll mark my calendar for a 2009 but not until after I've spent lots of time reading here!!