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took off heads, found gunk on 1 piston?

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Old 08-15-2008, 01:09 AM
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Exclamation took off heads, found gunk on 1 piston?
what does it mean and what can i clean it with
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Old 08-15-2008, 05:44 AM
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i have never heard of that technical term "gunk" but if you have "gunk" obviously you need use "gunk remover"

randy from doug rippie (drm) says they use something similar to a non soapy nylon type of brillo pad that is approved by the fda for cleaning the tops of pistons. you may want to give him a call to find out where you can pick one up
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Old 08-15-2008, 08:32 AM
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Approved by the Food and Drug Administration for cleaning pistons? You can scrape the bulk of it off with a gasket scraper then clean with some carb cleaner and a towel.
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Old 08-15-2008, 08:34 AM
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im sure billy mays has some product that will make it like new....
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Old 08-15-2008, 08:55 AM
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Originally Posted by andrew69_04
im sure billy mays has some product that will make it like new....
LOL
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Old 08-15-2008, 09:20 AM
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not gunk gunk. but some hard black stuff on there
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Old 08-15-2008, 10:07 AM
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I've cleaned them up with the soft-fiber pads on an air grinder. It cleans them good and doesn't scar the piston.

In the future, spray alot of nitrous and you won't have any gunk!
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Old 08-16-2008, 03:23 AM
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Originally Posted by Nabdrill
In the future, spray alot of nitrous and you won't have any gunk!
LOL. That's awesome. F seafoam!
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Old 08-16-2008, 07:46 AM
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Originally Posted by themack56
not gunk gunk. but some hard black stuff on there
I think you mean Carbon
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Old 08-16-2008, 09:27 AM
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Originally Posted by LS1C5Vette
I think you mean Carbon
that sounds about right
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Old 08-16-2008, 08:07 PM
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Interesting that you only had carbon on #1, I had it on all of them. Maybe you had a bad seal on the valve(s) for #1.
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Old 08-16-2008, 08:22 PM
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Gasket remover works WONDERS on carbon build up. Spray it on and let it sit for about 5 minutes and it will just wipe off. Spray the cylinder with WD40 after you're done.
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Old 08-16-2008, 09:23 PM
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Carb cleaner a rag and some elbow grease did me wonders on mine.
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Old 08-16-2008, 10:16 PM
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Originally Posted by andrew69_04
im sure billy mays has some product that will make it like new....
Are you talking about the one where someone could key your piston and it will still take the scratch out? I heard hot dipping in oxyclean makes cast alum look like day one.
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Old 08-16-2008, 10:21 PM
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Originally Posted by andrew69_04
im sure billy mays has some product that will make it like new....
he's my hero!
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Old 08-18-2008, 05:19 PM
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Old 08-18-2008, 09:17 PM
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guess we should all run shell gas... HA HA
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Old 08-18-2008, 09:28 PM
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Originally Posted by Pwebbz28
Gasket remover works WONDERS on carbon build up. Spray it on and let it sit for about 5 minutes and it will just wipe off. Spray the cylinder with WD40 after you're done.


+2000


Did this on my LQ4 and had all 8 cleaned to a mirror finish in 15 minutes.
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Old 08-18-2008, 09:38 PM
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or you could suck a little atf through a small vaccum hose, smokes like a MF but cleans amazingly
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Old 08-18-2008, 10:17 PM
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How is everyone missing the point of this thread? Guy here wants to know why only 1 is carbon'd up, not how to clean just 1!

As said above, likely bad seal.
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