2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

Intake valve cleaning

Old 11-26-2018, 02:18 PM
  #51  
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I went about 90k without a valve cleaning and mine were about as bad as yours solar.

never had Powells AOS.
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Old 11-26-2018, 07:13 PM
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Cadillac ATS guys with the 2.0 have the same issue. Alot are running a aftermarket dual catch can setup.
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Old 11-27-2018, 12:16 AM
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Originally Posted by 63 Nova SS View Post
Cadillac ATS guys with the 2.0 have the same issue. Alot are running a aftermarket dual catch can setup.
yeah and a forum member who WAS running powell v3 had same issues as me is working on a dual mishimoto catch can setup. IMO it's far simpler to just clean them every other year than to worry about hoses, vacuum, fittings, etc. I guess if you want all that complication sure, but I don't really want added complication.
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Old 11-27-2018, 06:20 AM
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I told Tom about it.
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Old 11-27-2018, 11:33 AM
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Ecaulk is planning on replacing his engine this summer, but I want to see his valves after we cleaned them 50k miles ago and he has powells AOS.
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Old 11-27-2018, 11:46 AM
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i swear DI cars should just come with meth from the factory
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Old 11-27-2018, 12:34 PM
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I've been thinking about eliminating my Powell just for simplicity and doing the cleaning every other year. Did the shells before, might give the GM top cleaner a try. I would imagine I'd need to get a spare valve cover for parts to get the fittings seeing as how the Powell uses AN fittings to replace the barbed pipes, and I'll just need to get new hoses from GM. I cant remeber how they go lol. Anyone change back for any reason recently?

Originally Posted by ThePanduuh View Post
I hate to break it to you, but I had powell V3 (the one that modifies the PCV stuff) and it looked marginally better, but I had 10k less miles. And we're not alone.

I recently swapped an LDK into my car and decided against PCV changes. I'd rather run the stock pcv and clean after 30-40k than constantly worry about a complicated setup and leaks and filters etc etc. There's tons of GM cars out there with no solution for this, I think being proactive in cleaning is the only true solution (without getting into custom multi can setups). Simplicity > all else. Mine's a DD, I feel much better not worrying about it.

Also, GM Top Engine Cleaner works wonders, costs $17 on amazon, and you shouldn't use the whole can (I didn't when I cleaned mine at 113k miles). I rinse with carb cleaner but didn't feel comfortable cleaning with it around valve seals.
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Old 11-27-2018, 12:42 PM
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Originally Posted by cw383 View Post
I've been thinking about eliminating my Powell just for simplicity and doing the cleaning every other year. Did the shells before, might give the GM top cleaner a try. I would imagine I'd need to get a spare valve cover for parts to get the fittings seeing as how the Powell uses AN fittings to replace the barbed pipes, and I'll just need to get new hoses from GM. I cant remeber how they go lol. Anyone change back for any reason recently?
I just put a LDK in my car without powell kit. The one that's tapped on the valve cover for powell kit goes to the turbo. The center of the valve cover (comes out at a 90) goes to the intake tube w/ the stainless check valve hose.

Corner of VC -> Turbo
Center of VC -> Intake Tube

The center valve cover to intake tube is the stainless braided line; the old part was replaced by part 12635643. CED is no longer an option as Tom seems to have abandoned the old site in favor of a new site, but you should be able to go into any GM dealer and order that part. It's 1/2 stainless line and half plastic flex hose, much less stress on the intake tube.
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Old 11-27-2018, 12:46 PM
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Who wants to clean my valves? Pretty sure they've never been done and I have about 122k miles on it (converted for you Yankees and your faux pas of a measuring system).
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Old 11-27-2018, 12:54 PM
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Originally Posted by ProfDNS View Post
Who wants to clean my valves? Pretty sure they've never been done and I have about 122k miles on it (converted for you Yankees and your faux pas of a measuring system).
Aren't you port injected?
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Old 11-27-2018, 12:57 PM
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Originally Posted by exninja View Post
Aren't you port injected?
Not sure. It could be starboard
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Old 11-27-2018, 01:58 PM
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Originally Posted by ProfDNS View Post
Not sure. It could be starboard


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Old 11-27-2018, 03:52 PM
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Originally Posted by leemanfor View Post
Ecaulk is planning on replacing his engine this summer, but I want to see his valves after we cleaned them 50k miles ago and he has powells AOS.
More miles than that. It's closer to 70k iirc, and when I go to swap motors it will likely be closer to 80k
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Old 11-27-2018, 06:02 PM
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Originally Posted by ECaulk View Post
More miles than that. It's closer to 70k iirc, and when I go to swap motors it will likely be closer to 80k
Here's mine after about 15k.
Sorry about bad quality, couldn't get enough light in to see them. I also had a leak in the line going to the turbo, AN fitting wasn't tight. My can had a **** gasket too (swelled WAY up) and leaked a bit at the can. All in all, it was a fun experiment, but I like the simplicity of it not in my engine bay. The last pic shows the valves after 110k no cleaning, then cleaning with GM Top Engine Cleaner and toothbrush. I made a youtube video of it, just search LNF intake valve cleaning.





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Old 11-27-2018, 06:32 PM
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Is this problem entirely because of PCV into the intake? In other words, if we vented to the atmosphere, would this all go away? Assuming everything else is in good working order. Not that I'm even considering this.
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Old 11-27-2018, 06:45 PM
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Originally Posted by Solaris99 View Post
Is this problem entirely because of PCV into the intake? In other words, if we vented to the atmosphere, would this all go away? Assuming everything else is in good working order. Not that I'm even considering this.
mostly.
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Old 11-27-2018, 07:39 PM
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Makes the problem worse - it is really a problem with direct injection. Take a look at this video

He does a good job explaining the issue.
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Old 12-04-2018, 08:59 AM
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Off topic, anyone know what size/type thread the valve cover is tapped to for where the Powell system screws in? I know its 6AN on the hose side, but not sure on the VC side
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Old 12-04-2018, 09:36 AM
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Originally Posted by cw383 View Post
Off topic, anyone know what size/type thread the valve cover is tapped to for where the Powell system screws in? I know its 6AN on the hose side, but not sure on the VC side
not sure of the size of the hole, but you pull out the stock quick connector (can be a PITA) and included tap is 1/8 NPT.
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Old 12-04-2018, 09:40 AM
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Originally Posted by cw383 View Post
off topic, anyone know what size/type thread the valve cover is tapped to for where the powell system screws in? I know its 6an on the hose side, but not sure on the vc side
1/8" npt
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