Carbon build up removal ?
Thread Starter
Race Director
Joined: Aug 1999
Posts: 11,113
Likes: 669
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Carbon build up removal ?
What is the best way to remove a huge carbon build-up from intake valves and pistons ? What would you use ? and how do I go about doing it ? Thank you !
Safety Car
Joined: Jun 2009
Posts: 3,888
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From: Frederick, Maryland
Instructor
Joined: Jun 2011
Posts: 123
Likes: 0
From: Carson VA
Look up the decarb (or SeaFoam) procedure on the search function of both the "tech" and "general" segments of the forum. Very simple to do for less than $10 and thirty minutes of your time. Just make sure to drive the **** out of it afterwards (not that you need an excuse).
Drifting
Joined: Dec 2000
Posts: 1,833
Likes: 4
From: Calgary, Alberta
Look up the decarb (or SeaFoam) procedure on the search function of both the "tech" and "general" segments of the forum. Very simple to do for less than $10 and thirty minutes of your time. Just make sure to drive the **** out of it afterwards (not that you need an excuse).
But legally
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
Put 2 gallons of Xylene in the tank. It will give you about 100-104 or so octane and clean off all your carbon buildup.
Google Xylene and you will see the many uses for it, your car will even run a lot better with that tank of fuel!
Drive it hard at WOT!
Google Xylene and you will see the many uses for it, your car will even run a lot better with that tank of fuel!
Drive it hard at WOT!
Last edited by Blitzkrieg; Oct 30, 2011 at 03:08 PM.
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Instructor
Joined: Jun 2011
Posts: 123
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From: Carson VA
I am assuming that you are having detonation and/or oil consumption issues. If so, you may want to consider putting a catch-can on your PCV circuit. These LSs are famous oil consumers due to a **** poor PCV design (and ring issues with early C5s). I have built many a baffle in the valve cover(s) of LSs and 5.0 Stangs (forgive me) to alleviate this issue. If you are consuming less than 1/2 a quart between 3-4k, just do the decarb. If more, do the catch can. There are many available on this forum for less than $100, or you can go to Home Depot and get a water/oil seperator for an air compressor for $10. Doesn't work as well...but does the job.
Last edited by fishmen222; Oct 30, 2011 at 06:06 PM.
Instructor
Joined: Jun 2011
Posts: 123
Likes: 0
From: Carson VA
No...different topic. From what I have experienced, this is relative to the piston skirt vs. cylinder bore diameter. Have had slap on my vette, three f-bodies, and three Silverados. Does not sound good, but as long as you reach operating temperaure before flogging it...all is good.
