Took the HEAD OFF today..PICTURES*****

[Diesel Power]

Diesel Power,

You valves probably need replaced too, according to your mods! :-laf

hey, easy now :-laf i cant say i have'nt had it happen but i can say that they wont do it again, so im safe now! Oo.

 

[jwilliams3]

Mine won't do it again either once the new valve springs go on.

Probably just drop a valve seat! Thats what you got to be worried about on these 3rd gens.

:-laf

 

[Tomeygun]

The main reason #6 carbons up so much is due to lack of air volume. Just because you have 40,50,60lbs of boost at the intake valve doesent mean anything! The way the port is designed restricts cfm from being able to get into the cylinder, same reason #6 cyl always tends to be the one that melts down first.



John

Any fix for that problem?



Like a specially ported head that addresses that issue?

 

[jwilliams3]

I can just see all the 3rd genners in TDR land dreaming tonight about their valves tonight... . bang... bang... . bang :-laf :-laf



I wonder if it was those 3600rpm 50psi launches with a sled behind me... .

 

[Diesel Power]

Any fix for that problem?



Like a specially ported head that addresses that issue?

yes we are working on that now Oo.

 

[WUnderwood]

care to give us some dirt on that topic?

 

[Diesel Power]

care to give us some dirt on that topic?

sorry i cant give info yet

 

[jwilliams3]

BS BS BS BS BS... . :-laf :-laf :-laf



Diesel Power,

If this is going to turn into a sales pitch for your product(s) please do us all a favor and start another thread.



This thread was started by me to provide information to the members of this site on the effects of a modified common rail not to make money or up sales, or push product.

 

[Diesel Power]

BS BS BS BS BS... . :-laf :-laf :-laf



Diesel Power,

If this is going to turn into a sales pitch for your product(s) please do us all a favor and start another thread.



This thread was started by me to provide information to the members of this site on the effects of a modified common rail not to make money or up sales, or push product.

please dont get too excited jwilliams3, im not ruining your presious little thread , get real man,it was ended when i said i cant give any more info on that, you should read before you post!

 

[jwilliams3]

You havent had any useful information since you joined Diesel Power or whatever your name is this week..... gimme a break. Your a newbee around here man.



And its precious... not presious. :-laf



I am wasting my breath though. Guys like you will be gone in about 4 or 5 months after you realize that no one cares what you say and you are not impressing anyone. Seen it many times on this site and other sites.



750 posts in 3 months..... :-laf :-laf Your the 2006 XCumminsX

 

[JUeckert]

just to add a little. about 6 weeks ago i had my gmc [6. 5] at the dealer getting the new inj pump timed. while cruiseing the service dept i noticed two 3rd gen dodges sitting next to each other with the hoods off. long story short,one had the engine out with the piston blown [#6],and was waiting for a new engine. the service writer said that it hadnt been determined if it was high egt's or a bad injector at the time. this was an 05 model. the second truck was an o4 which had for some reason lost a valve and got a piston/cyl. both had less than 60k on the clock,both were auto's,and neither were modded. i asked the writer if these were common probs,he said the valve was proably the 5th one he had seen it 5 years,but the blown piston was a more common occurence,mainly from modding[which he advised against especialy for warranty]but the 3 gens have had a higher injector failing rate than he would like to see,which also has led to some blown pistons...

 

[JStieger]

Justin-



In the past you were thinking about some bigger injectors, but now in light of what you observed are you going to stay with your stock injectors?

 

[jwilliams3]

JSteiger,

On the injectors, I will continue to run the 90hp DDP's they are running flawless.

Alot of the carbonizing is from what FloorIt pointed out about the CFM not getting to the rear cylinders and of course OVERFUELING!



The engine is cleaning up pretty well. I will probably run the motor another year or maybe 2 for pulling then it will get a complete rebuild.

If I experience a failure anytime soon then I will go to plan 'B' and install one of my spare 2004. 5 crate engines.



Its pay to play. There is no High Horsepower engines that do not wear out. I can only try to do things that will help stave off a premature failure.

 

[jwilliams3]

I have done some amateur clean-up of the head surface and pistons:



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[Diesel Power]

You havent had any useful information since you joined Diesel Power or whatever your name is this week..... gimme a break. Your a newbee around here man.



And its precious... not presious. :-laf



I am wasting my breath though. Guys like you will be gone in about 4 or 5 months after you realize that no one cares what you say and you are not impressing anyone. Seen it many times on this site and other sites.



750 posts in 3 months..... :-laf :-laf Your the 2006 XCumminsX

if i will be gone in a few months then why am i involved in the cp3 market and any thing else you put on you truck? dont be jealous because you can't be apart of making diesel technology better!! no one cares huh, well i said you need a cp3 to make more power---people started putting on cp3's, i said to make that pump work you need a fass 150 @ 40 psi , and injectors to complete the power package---and some combos with the rail cap----sorry bud but its been proven already, i've been know for my work for a long time and since january got online (thats 4 months) since you care so much! im not here to take your glory away---im here to help others and to learn as well, also to increase the market with new and better performance products for there trucks. this is one person who you will not see leave the forums because you have a biased opinion. :-laf

 

[jwilliams3]

We already knew we needed CP3's and injectors... :-laf

Diesel Power on a serious note I am not looking for glory. If I was then I would just write BS BS over and over again.



This thread is just meant to be a resource of information to the users out there on what to expect when they pull their modded common rail apart.



Lets put this one to bed for the better of everyone who reads this thread...



You get a truce from my end of things.

 

[Diesel Power]

We already knew we needed CP3's and injectors... :-laf

Diesel Power on a serious note I am not looking for glory. If I was then I would just write BS BS over and over again.



This thread is just meant to be a resource of information to the users out there on what to expect when they pull their modded common rail apart.



Lets put this one to bed for the better of everyone who reads this thread...



You get a truce from my end of things.

Oo. cool man thats all i wanted, have a good easter weekend :-laf

 

[Powerstroke racer]

A couple of thoughts on the pics,the valve contact is more than likely caused by excessive back pressure, we see it alot on the 7. 3 which would explain the carbon build up. What happens is the valve is bouncing off the seat uncontrollably,when that happens you lose your cylinder pressure which results in an incomplete burn.

Second theory is crankshaft deflection similar to an inline jet ski engine. Under load the crank shaft twist which throws the timing off for the last cylinder. Not sure which is causing the problem but something to think about.

 

[jwilliams3]

David,

I think you hit the nail on the head with the first part of your statement.

The stock valve springs are just not enough to run 3000+rpm with 50+lbs of boost under load.

I agree I am losing massive amounts of charge air at that point due to the valve not being closed in time.



The new Valve springs should definitely do the trick and increase power and lower egt's just by themselves.



Thanks for the insight!

 

[Jeff_K]

Who's cam and HD valve springs are you going to be using?