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Old 03-08-2008, 05:41 AM   #1 (permalink)
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Default Great way to remove carbon on valves!!!!

Well i have been trying everything to get the damn carbon off of my exhaust valves paint thinner to brake fluid. I happen to have a bottle of Dominion Sure Seal Rust Remover sitting around that i used on my ford 8.8" rear end in my jeep. I let each valve sit over night in this stuff and most 90% of the carbon was gone, a quick second on the wire wheel and they were brand new.
Anyway here is the link.
http://shopping.mytelus.com/shop/pro...d_3943602.html
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Old 03-08-2008, 06:06 AM   #2 (permalink)
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I have a steel round brush that I put in my press drill and hold the valve in there.

looks like new afterwards.
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Old 03-08-2008, 06:22 AM   #3 (permalink)
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i tried holding those damn valves on the wire wheel on my bench grinder forever and it did nothing, chemical cleaning is a better idea for valves anyway, i think. I only lightly went over them after with the wire wheel.
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Old 03-08-2008, 07:16 AM   #4 (permalink)
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I run them through the bench grinder wire wheel all the time and never had a problem and they always come clean!
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Old 03-08-2008, 08:15 AM   #5 (permalink)
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HUH, maybe i just had some really bad valves.
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Old 03-08-2008, 08:24 AM   #6 (permalink)
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Ohhhh I have had some where I was surprised the car would rev over 2000 rpm!
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Old 03-08-2008, 08:40 AM   #7 (permalink)
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Originally Posted by Tazjig View Post
i tried holding those damn valves on the wire wheel on my bench grinder forever and it did nothing, chemical cleaning is a better idea for valves anyway, i think. I only lightly went over them after with the wire wheel.
I find the thicker the carbon is the harder it is to get off with bench grinder wire wheel.

I cant get hold of your rust remover, i wonder is vinegar will have the same effect?

so anyway I was bored

before




after


in the head
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Old 03-08-2008, 08:48 AM   #8 (permalink)
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That head looks FUCKED!!!
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Old 03-08-2008, 08:53 AM   #9 (permalink)
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Those valves that you cleaned look like intake valves, they are very easy to clean. I actually used permatex gasket remover, comes in a spray, just give them a shot and they are good as new. The exhaust ones are the bad ones, and i didnt try vinegar, it may work, im not even sure what the ingredients are for the rust remover.
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Old 03-08-2008, 09:39 AM   #10 (permalink)
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Bench grinder with a wire wheel worked great for me you must have some gooky valves how many miles on the head and how old is it.
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Old 03-08-2008, 11:17 AM   #11 (permalink)
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not even 200k, how long did it take you guys per valve
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Old 03-08-2008, 11:36 AM   #12 (permalink)
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That head looks FUCKED!!!
yes, its still fine though going for a skim....etc.., that what happens when old people put water in the cooling system

you should see the head gasket.

takes me about 5 - 10 min per intake valve x 8

15 min for the exhaust x 8

Last edited by Icarus; 03-08-2008 at 11:42 AM.
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Old 03-08-2008, 11:53 AM   #13 (permalink)
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So the wire wheel wouldn't affect the valve much right?
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Old 03-08-2008, 01:54 PM   #14 (permalink)
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So the wire wheel wouldn't affect the valve much right?
not on the face of the valve.

I do put extra effort into making sure the wire brissels do not get in contact with the edge of the valve where it is seated on the head.

I also turn the valve so that the "brushing" is even.
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Old 03-08-2008, 03:31 PM   #15 (permalink)
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I find the thicker the carbon is the harder it is to get off with bench grinder wire wheel.
ya, with my last set of valves, no matter how much i wire wheeled them and how much pressure i put on it the carbon would not come off...

i ended up using a bead blaster at my work. super fast and they came out beautiful

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Old 03-08-2008, 05:05 PM   #16 (permalink)
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Ya a bead blaster would definately do the trick, im not sure if the Rust Remover stuff is hard to find but in Canada at any Canadian Tire you can pick it up for 5.99 and it worked awesome, just thought i would let some people know, maybe it will help some fellow canadians out there.
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Old 03-08-2008, 05:44 PM   #17 (permalink)
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ya, with my last set of valves, no matter how much i wire wheeled them and how much pressure i put on it the carbon would not come off...

i ended up using a bead blaster at my work. super fast and they came out beautiful

Nice clean-up job!!!
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Old 03-08-2008, 11:26 PM   #18 (permalink)
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ya, with my last set of valves, no matter how much i wire wheeled them and how much pressure i put on it the carbon would not come off...

i ended up using a bead blaster at my work. super fast and they came out beautiful

http://img.photobucket.com/albums/v2...x/sohczc_8.jpg
yours looks new!

Here is my D16 head after a clean up, you can see some of the carbon I couldn't get off. But its alot better then it was.

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Old 03-09-2008, 05:34 AM   #19 (permalink)
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yours looks new!

Here is my D16 head after a clean up, you can see some of the carbon I couldn't get off. But its alot better then it was.

Those exhaust valves would have been perfect candidates for some rust remover, lol. Looks good though.
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Old 03-10-2008, 07:31 AM   #20 (permalink)
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Default Piston Kleen

Rust remover usually contains some form of acid which is a metal dissolver. I don't use it on precision parts. And I don't like bits of broken wire brushes flying around those parts either. Vinegar works as good as any commercial product I've tried for rust. But for carbon, nothing beats Piston Kleen IMO.

Install some old plugs, flip your head upside down, and level it off. Rotate the cam so that all the valves are closed. Fill chamber with Piston Kleen (odorless, colorless, and biodegradable). Let soak overnight. It works best at 90 degress F but does fine at room temperature. Suck out some of the skanky fluid with a turkey baster. Brush gently with a toothbrush. Suck out more fluid and then wipe it clean with a rag or paper towels. Use compressed air to blow out skanky fluid around the valves and spark plug threads. Repeat if necessary.



This head had only 28k on it but I've cleanup up gnarly head in 2 or 3 applications with excellent results. Of course, this does not work if the valves won't seal in which case you need to disassemble the head and soak the valves in a container. Then you can clean the chambers after you lap the valves in and reassemble the head. Stubborn flakes of carbon can be picked away with a dental tool. You can also polish further with a dremel (like the spark plug threads after you remove them).

The basic results...



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