3.5 Ecoboost Carbon Buildup

wasinger3000 · September 18, 2014, 10:51:08 AM

Quote from: SHOdded on September 17, 2014, 07:24:26 PM
So you watch WD with Mike & Ed, eh? Here's their procedure for cleaning the intake valves on GDI engines.

I love WD. Since I only get 4 episodes of top gear UK in a year I have a desire left unfilled for British car action lol.

All the US car shows are bleh.

SHOdded · September 18, 2014, 04:10:03 PM

Them's some crazy folks up there in the UK, or should we say England from tomorrow onwards?

jtoddk98 · January 07, 2015, 08:47:08 PM

https://www.youtube.com/watch?v=-ynGWxzJHjA

SHOdded · January 08, 2015, 12:37:57 AM

Ha! He shows a RevXtreme catchcan during the video. Apparently excessive blowby (byproduct of turbo function) pressurizes the crankcase and thus forcing even more c*** through the intake onto the back of the intake valves.

BiGMaC · January 08, 2015, 01:16:45 AM

Quote from: SHOdded on January 08, 2015, 12:37:57 AM
Ha! He shows a RevXtreme catchcan during the video. Apparently excessive blowby (byproduct of turbo function) pressurizes the crankcase and thus forcing even more c*** through the intake onto the back of the intake valves.

It's not so much turbos as it is high compression... Cylinder blow by to crankcase causes potential pressure which is relieved by the PCV and put back in the intake pipes.... It's another reason to be VTA... At least then there's no recycling the stuff. Even with the can you need a clean side separator.

SHOnUup · January 08, 2015, 09:02:20 AM

"The ecoboost engine likes to be driven hard"!!!

Oh the faint memories of my dad looking over after getting on it in his truck and saying, "have to burn that carbon up son"!

Rich

ZSHO · January 08, 2015, 09:41:55 AM

X2 ON THAT,if you can on a nice quiet open road,do some hard 0-60 runs about 3-4 times to alleviate some of that carbon buildup,good luck.

BiGMaC · January 08, 2015, 09:51:20 AM

Our fathers must have talked to each other! My dad always told us he was "blowing the dirt out" every time he went WOT, LOL

wasinger3000 · January 09, 2015, 02:11:49 AM

Mine always said he was blowing the "cobwebs" out... hah. Good enough for me.

SHOnUup · January 09, 2015, 07:05:22 AM

No denying where we got our heavy right foots from.

Rich

J-Will · January 09, 2015, 10:11:50 AM

Quote from: BiGMaC on January 08, 2015, 01:16:45 AM
It's another reason to be VTA... At least then there's no recycling the stuff. Even with the can you need a clean side separator.

Is this the only form of EGR, or is there a traditional method as well?

BiGMaC · January 09, 2015, 01:56:17 PM

Quote from: J-Will on January 09, 2015, 10:11:50 AM
Quote from: BiGMaC on January 08, 2015, 01:16:45 AM
It's another reason to be VTA... At least then there's no recycling the stuff. Even with the can you need a clean side separator.

Is this the only form of EGR, or is there a traditional method as well?

Not exactly sure what you're asking Will... See if this helps
All cars in the US, of course, have a PCV valve as you know. On our cars it exhausts into the intake tubing... in fact most of it goes to the front turbo. This CC blowby with volatilized oil, unburnt fuel, and water is what causes coking of the turbo impeller blades over time as well as the intake valves. These can only be cleaned mechanically unless you are meth injected which definitely helps the intake valves stay clean. Ford, BTW, may have the best system available currently per the literature. CCBB has always gone to the intake air, remember that his into the air filter on your carbonated cars?... With VTA at least part of this goes to atmosphere instead of being recompressed and/or concentrated. The clean side separator removes most of this and is a replacement for the oil filler cap to be used along with the RXPerformance catch can. See it here: http://www.revxtreme.com/rx-catch-cans

Or check Tracy's explanations of this posted on the forum. maybe start with the install: http://www.ecoboostperformanceforum.com/index.php/topic,2187.msg31056.html#msg31056

Not selling anything... I do own the RevExtreme catch can and CSS though.

Does this help?

J-Will · January 09, 2015, 04:23:59 PM

Yes it does help. I was asking to get a better understanding of what would need to be blocked in order to prevent all exhaust gases from re entering the engine. It was common practice on previous cars to throw on a block off plate, and use HP Tuners to disable CELs. I am wondering if anything other than changing to VTA would need to be done in order to prevent all exhaust gases from recirculating.

I am also wondering why LMS would say that they see no benefit from VTA.

BiGMaC · January 09, 2015, 04:34:19 PM

Quote from: J-Will on January 09, 2015, 04:23:59 PM
Yes it does help. I was asking to get a better understanding of what would need to be blocked in order to prevent all exhaust gases from re entering the engine. It was common practice on previous cars to throw on a block off plate, and use HP Tuners to disable CELs. I am wondering if anything other than changing to VTA would need to be done in order to prevent all exhaust gases from recirculating.

I am also wondering why LMS would say that they see no benefit from VTA.

Most guys are getting a cup or more per 1000 miles in the RevExtreme catch can. I can't answer your question directly, but do you want this stuff in that premium oil you buy to protect your engine? Haven't seen anyone just plugging holes, but RevExtreme does make a breather cap... Tracy is very helpful. PM him. He's a whiz at this particular type of issue and explains well. You'll find him in the vendors area.

91hybrid · January 10, 2015, 10:42:51 AM

Quote from: J-Will on January 09, 2015, 04:23:59 PM
Yes it does help. I was asking to get a better understanding of what would need to be blocked in order to prevent all exhaust gases from re entering the engine. It was common practice on previous cars to throw on a block off plate, and use HP Tuners to disable CELs. I am wondering if anything other than changing to VTA would need to be done in order to prevent all exhaust gases from recirculating.

I am also wondering why LMS would say that they see no benefit from VTA.

There is no egr valve on these cars, so there is nothing to block off. Any exhaust gasses that make their way back into the combustion chamber is done using cam timing. BiGMaC is talking about crank case blow by. I have my front fresh air tube removed and use a k&n filter there to it vents to atmosphere. I then use two check valves on the rear oil separator to switch between vacuum draw from the intake manifold when not in boost and the front turbo inlet when in boost. It helps reduce the oil pulled into the turbo from the crank case vapors by pulling all crank case vapors through the factory oil separator, instead of a metal baffle in the front valve cover.

I still want to add an aftermarket catch can to the system, just haven't done it yet.

John