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Are the intake valves nitride coated (controlling valve coking)

Started by 6500rpm, August 15, 2018, 10:06:17 PM

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6500rpm

I see a lot of valve coking on DI engines at my job, I also mess with firearms and there's a trend toward nitride coated barrels due to it's properties. I was curious if the OEM intake valves on our GTDI engines are nitride coated by chance if anybody knows.
Just a conversation point, not like I'm going to pull the heads off my vehicle just to install treated valves if Ford hasn't provided some type of treatment, but it makes me wonder. Also, what's the most important oil spec to look at-flash point?
2013 SHO PP in Ruby Red Metallic, GTG Billet Grills, Duraflex Racer Chin Spoiler, DriveBright LED Driving/Turn Lights,160 T Stat, MSD Coils, All Royal Purple Lubricants, EPP Gen 2 Duel Intake and hotpipes,3 bar, Gearhead AO tuned!


SHOdded

No idea on the valves.  FoMoCoSHO can give input on the most important oil properties, hes really dug into that stuff.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

Macgyver

They might be sodium filled but I doubt they are coated. I retired from a specialty alloy mill that made all types of valve steel. They didnt need coating per metallurgists. Lol


geophb

Would there be a benefit if they were? I mean cuz when I had my intake off, the port had just as much buildup as the valve...
2010 Taurus SHO 3bar AJPturbo tune

Macgyver


ToMang07

I know the valves (old and new) were both coated when I replaced on in my 02 F350. I imagine they would be in these cars.
~Tom~
2013 SHO - Stage 3 Snow Performance Meth, (2) SCT X4 with Unleashed, 3 Bar Map, MSD Ignition Coils w/Colder Plugs 170*TS, EcoPowerParts Hot Pipes & Tial-Q BOV) Stage 3 Motorsports Catless Downpipes 3" Cat-Back Exhaust, JLT Oil Separator, H&R Sport Springs, K&N CAI, Drilled and Slotted Rotors w/EBC Pads

SHOdded

Mustang 2.3 EB
"The cylinder head now has sodium-filled valves. The sodium is contained in the hollow valve stem and transfers heat from the head of the valve to the stem for improved valve cooling."
http://thechronicleherald.ca/wheelsnews/1240182-beneath-the-shine-2015-ford-mustang

https://www.newcomen.com/wp-content/uploads/2012/12/Chapter-22-Starr.pdf

https://www.fordmuscle.com/tech-stories/ferrea-helps-explain-valve-flow-dynamics/
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

Vortech347

Quote from: SHOdded on August 16, 2018, 06:05:43 PM
Mustang 2.3 EB
"The cylinder head now has sodium-filled valves. The sodium is contained in the hollow valve stem and transfers heat from the head of the valve to the stem for improved valve cooling."
http://thechronicleherald.ca/wheelsnews/1240182-beneath-the-shine-2015-ford-mustang

https://www.newcomen.com/wp-content/uploads/2012/12/Chapter-22-Starr.pdf

https://www.fordmuscle.com/tech-stories/ferrea-helps-explain-valve-flow-dynamics/

Oh jeeze, Ford didn't learn from GM effing up the Z06 engines with those valves.  Hopefully they are more robust.
Matt H.
2013 SHO Performance Pack, Daily, AJPTurbo tuned
2003 SVT Cobra 497rwhp/491rwtq, Self tuned, Cruiser
1990 Mustang GT 570rwhp/530twtq, Self tuned, Open Track
2017 F150 XLT 5.0

SHOdded

Nary a problem yet.  Possibly they let GM do the beta testing LOL.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!