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03-24-2011, 09:39 AM
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#41
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Name: nwpadmax
Title: Turbo Geek
Status: Not Here
Join Date: Nov 2006
Location: Out in the shop
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Posts: 3,128
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That Mondello article has some really strange statements in it...like so strange that they make no sense whatsoever...
"You must have sharp distinct angles on the intake valve to shear incoming fuel to eliminate vortices that try and form in the quench area of the engine."
Wha?
"Coating the undersides of pistons helps oil shedding resulting in a cooler running piston." Really?
__________________
"What I said does equate too what can happen....Alote."
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03-24-2011, 10:46 AM
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#42
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Name: GOT-Torque
Title: is
Status: Not Here
Join Date: Jul 2007
Location: Falls City, NE
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Posts: 5,284
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Looks like a simple mistake on the line referring to a gas engine.
He's an extremely smart guy with every possibly piece of top end test equipment at his disposal. He spent the first 3 days this week working with my head porter on the first two (yes only 2) ports of my new head. Lots of flow bench time 
__________________
"Enjoy the little things in life, because one day you will look back, and realize they were the big things"
EATSOOT.com
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03-24-2011, 10:48 AM
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#43
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Name: Scooter's Roofing
Title: Too Much Time
Status: Not Here
Join Date: Oct 2006
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Posts: 17,007
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he was saying a wet head needs valve angles... a dry head (diesel) can use full radii into the seat angle...
__________________
that's pretty much all of it
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03-24-2011, 10:59 AM
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#44
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Name: nwpadmax
Title: Turbo Geek
Status: Not Here
Join Date: Nov 2006
Location: Out in the shop
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Posts: 3,128
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Quote:
Originally Posted by Forrest Nearing
he was saying a wet head needs valve angles... a dry head (diesel) can use full radii into the seat angle...
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Or is he mixing in information from diesel heads that are the alky-burning variety?
__________________
"What I said does equate too what can happen....Alote."
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03-24-2011, 11:13 AM
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#45
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Name: Scooter's Roofing
Title: Too Much Time
Status: Not Here
Join Date: Oct 2006
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Posts: 17,007
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Quote:
Originally Posted by nwpadmax
Or is he mixing in information from diesel heads that are the alky-burning variety?
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I didn't take it as mixing info... he mentioned full radius seats and then mentioned that wet flow needs angles
__________________
that's pretty much all of it
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03-24-2011, 11:38 AM
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#46
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Name: nwpadmax
Title: Turbo Geek
Status: Not Here
Join Date: Nov 2006
Location: Out in the shop
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Posts: 3,128
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Quote:
Originally Posted by Forrest Nearing
I didn't take it as mixing info... he mentioned full radius seats and then mentioned that wet flow needs angles
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OK, but when I was taught how to write technical articles, if the subject matter is 100% diesel (a dry flow engine), why bother with mentioning wet-flow stuff unless you're using the phrase "in contrast to heads for SI engines which need X, diesels like Y..."
Either way, interesting.
I guess I have a beef when someone who is otherwise respectable says "head porting is art, not science". No, it's science all right, we're just not applying the right sciences if they fail to explain what proves itself on the dyno.
I'm sure the all the PhDs on F1 teams would read that statement and chuckle.
__________________
"What I said does equate too what can happen....Alote."
Last edited by nwpadmax; 03-24-2011 at 11:41 AM.
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03-24-2011, 11:51 AM
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#47
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Name: Lostnwalmart
Title: Too Much Time
Status: Not Here
Join Date: Jul 2006
Location: Tokyo Japan
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Posts: 8,970
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Not all diesels are direct injected....
__________________
Ecorico scooter!!
-Cliff
Quote:
Originally Posted by Snedge
Anybody that would not haul a dinosaur for an orphanage is no friend of mine.
To some people it's all about money. Geez
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03-24-2011, 12:01 PM
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#48
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Name: tom diesel
Title: Rookie
Status: Not Here
Join Date: Feb 2011
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Posts: 14
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Quote:
Originally Posted by Lostnwalmart
Not all diesels are direct injected....
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are you saying they are wet flow?
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03-24-2011, 12:26 PM
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#49
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Name: XLR8R
Title: Crew Chief
Status: Not Here
Join Date: Sep 2007
Location: Pattonville, TX
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Posts: 2,364
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Joe is mostly correct, but the article isn't high-perf #2 gospel.
__________________
3 Nails Garage
Sleeps a flock of Rams & a Goat
GUN-HAPPY Crew Chief
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03-24-2011, 12:43 PM
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#50
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Name: GOT-Torque
Title: is
Status: Not Here
Join Date: Jul 2007
Location: Falls City, NE
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Posts: 5,284
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End use plays a big role too. Rpm range and boost levels affect port design as well.
__________________
"Enjoy the little things in life, because one day you will look back, and realize they were the big things"
EATSOOT.com
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03-24-2011, 07:32 PM
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#51
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Name: nwpadmax
Title: Turbo Geek
Status: Not Here
Join Date: Nov 2006
Location: Out in the shop
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Posts: 3,128
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Quote:
Originally Posted by Lostnwalmart
Not all diesels are direct injected....
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Is there a single "hi-po" diesel that is though?
Even so, the fuel ain't running down the friggin' intake port...
__________________
"What I said does equate too what can happen....Alote."
Last edited by nwpadmax; 03-24-2011 at 07:33 PM.
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03-24-2011, 10:34 PM
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#52
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Name: joefarmer
Title: MR. Supreme Overlord
Status: Not Here
Join Date: Jul 2006
Location: ohio
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Posts: 6,137
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Quote:
Originally Posted by matty169
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Joe's hilarious; everyone should talk with him once. 
__________________
brandon'); DROP TABLE Users;--1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
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03-24-2011, 10:47 PM
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#53
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Name: Lostnwalmart
Title: Too Much Time
Status: Not Here
Join Date: Jul 2006
Location: Tokyo Japan
Member`s Gallery
Posts: 8,970
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Quote:
Originally Posted by nwpadmax
Is there a single "hi-po" diesel that is though?
Even so, the fuel ain't running down the friggin' intake port...
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not that i know of and i was just being difficult  
__________________
Ecorico scooter!!
-Cliff
Quote:
Originally Posted by Snedge
Anybody that would not haul a dinosaur for an orphanage is no friend of mine.
To some people it's all about money. Geez
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03-24-2011, 10:48 PM
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#54
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Name: DIESEL_POWER
Title: NGM Diesel
Status: Not Here
Join Date: Jul 2006
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Posts: 5,178
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Weather you know it or not, every forced indution head gets moisture in the air stream, from one of the following, Condensation, Boost psi, nitrous, Water injection,Methanol, ECT.
There is no such things as a "dry" diesel head...unless it's not running.
There is so much that can be said here, and further discussed in better detail...
__________________
Proverbs 3:5-6 (KJV)
5 Trust in the Lord with all thine heart; and lean not unto thine own understanding. 6 In all thy ways acknowledge him, and he shall direct thy paths.
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03-24-2011, 10:54 PM
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#55
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Name: joefarmer
Title: MR. Supreme Overlord
Status: Not Here
Join Date: Jul 2006
Location: ohio
Member`s Gallery
Posts: 6,137
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Quote:
Originally Posted by DIESEL_POWER
Weather you know it or not, every forced indution head gets moisture in the air stream, from one of the following, Condensation, Boost psi, nitrous, Water injection,Methanol, ECT.
There is no such things as a "dry" diesel head...unless it's not running.
There is so much that can be said here, and further discussed in better detail...
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For purposes of discussion, dry means no fuel in runners.
BTW, what's "ECT"?
__________________
brandon'); DROP TABLE Users;--1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
firepunk.com |
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03-24-2011, 10:57 PM
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#56
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Name: Lostnwalmart
Title: Too Much Time
Status: Not Here
Join Date: Jul 2006
Location: Tokyo Japan
Member`s Gallery
Posts: 8,970
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I think he meant excreta?
__________________
Ecorico scooter!!
-Cliff
Quote:
Originally Posted by Snedge
Anybody that would not haul a dinosaur for an orphanage is no friend of mine.
To some people it's all about money. Geez
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03-24-2011, 11:17 PM
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#57
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Name: Scooter's Roofing
Title: Too Much Time
Status: Not Here
Join Date: Oct 2006
Member`s Gallery
Posts: 17,007
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is that like di-REA from the mouthial cavity?
__________________
that's pretty much all of it
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03-25-2011, 02:12 AM
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#58
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Name: GRotman
Title: Chief Indian
Status: Not Here
Join Date: Jul 2006
Location: Allendale,Mi
Member`s Gallery
Posts: 2,516
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Quote:
Originally Posted by DIESEL_POWER
Weather you know it or not, every forced indution head gets moisture in the air stream, from one of the following, Condensation, Boost psi, nitrous, Water injection,Methanol, ECT.
There is no such things as a "dry" diesel head...unless it's not running.
There is so much that can be said here, and further discussed in better detail...
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Feel free to let loose at any time.
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03-25-2011, 05:57 AM
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#59
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Name: OrangeNV
Title: BISH please
Status: Not Here
Join Date: Apr 2010
Location: Pittsburgh
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Posts: 5,043
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Quote:
Originally Posted by Lostnwalmart
I think he meant excreta?
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unleash the spelling police!
__________________
Diesel Ron
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Quote:
Originally Posted by roachie
Nothing is quite as exciting as bare-backing a ginger crack wh0re that is famous.
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MUMAU
RAM BOYZ
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03-25-2011, 06:31 AM
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#60
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Name: SINNER
Title: BallSoHard U
Status: Not Here
Join Date: Feb 2007
Location: The Un Free State
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Posts: 4,803
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How in the hell anyone can compare humidity in the air stream with a wet port designed engine is unexplainable to me. Is it possible to be that stupid?
__________________
2004 f-350 cc drw
Build a man a fire and he'll be warm for a day...
Set a man on fire and he'll be warm for the rest of his life.
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