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best way to clean onan heads? [message #81800]

Sun, 25 April 2010 00:41

Duce Apocalypse

Messages: 824
Registered: May 2009
Location: Los angeles

Karma: 0

Senior Member

I was gonna use easy off until I saw it was not for use on aluminum (it decarbonizes iron heads like $hit through a goose) so what's the favored way to get the crud off? I have some gun bore solvent and carby dip that both like to remove carbon, that sound good?

73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA

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Re: [GMCnet] best way to clean onan heads? [message #81814 is a reply to message #81800]

Sun, 25 April 2010 08:28

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma: 0

Senior Member

It took only minutes to bead blast the heads. I reused the old
gaskets after applying many coats of cheap silver paint to each side.
Has performed flawlessly since. (Did have to adj the carb though as
the decarbonizing made a significant difference in mixture.)
Here's pix:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=3416

On Sat, Apr 24, 2010 at 10:41 PM, Shan Rose <defconfx@gmail.com> wrote:
>
>
> I was gonna use easy off until I saw it was not for use on aluminum (it decarbonizes iron heads like $hit through a goose) so what's the favored way to get the crud off? I have some gun bore solvent and carby dip that both like to remove carbon, that sound good?
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--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] best way to clean onan heads? [message #81815 is a reply to message #81800]

Sun, 25 April 2010 08:27

Carleton Douglas[1]

Messages: 174
Registered: March 2006

Karma: 0

Senior Member

Put it in water for a few days, it will come off.

On Sat, Apr 24, 2010 at 10:41 PM, Shan Rose <defconfx@gmail.com> wrote:
>
>
> I was gonna use easy off until I saw it was not for use on aluminum (it decarbonizes iron heads like $hit through a goose) so what's the favored way to get the crud off? I have some gun bore solvent and carby dip that both like to remove carbon, that sound good?
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Carleton Douglas
73 custom, by myself
Prescott, AZ
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Re: best way to clean onan heads? [message #81870 is a reply to message #81800]

Sun, 25 April 2010 20:50

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

Bead Blast or use a fine wire brush in a dremmel tool. The dremmel will take you longer.

Ken B.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: best way to clean onan heads? [message #81931 is a reply to message #81870]

Mon, 26 April 2010 10:58

Duce Apocalypse

Messages: 824
Registered: May 2009
Location: Los angeles

Karma: 0

Senior Member

Actually I wound up using Berryman carby dip for soaking the heads and a fine wire brush. it did a good job of softening up those stubborn carbon deposits. the heads did have a fair amount of carbon in them but I've seen worse in some car engines...

When I put the heads back onthe onan however still no dice in the erratic operation of the onan...

Ken Burton wrote on Sun, 25 April 2010 20:50

Bead Blast or use a fine wire brush in a dremmel tool. The dremmel will take you longer.

Ken B.

73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA

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Re: [GMCnet] best way to clean onan heads? [message #81964 is a reply to message #81931]

Mon, 26 April 2010 14:14

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

Karma: -3

Senior Member

Could anyone guess if running the beast on propane for a while would
achieve the same result?

Ljdavick at comcast.net

On Apr 26, 2010, at 8:58 AM, Shan Rose <defconfx@gmail.com> wrote:

>
>
> Actually I wound up using Berryman carby dip for soaking the heads
> and a fine wire brush. it did a good job of softening up those
> stubborn carbon deposits. the heads did have a fair amount of carbon
> in them but I've seen worse in some car engines...
>
> When I put the heads back onthe onan however still no dice in the
> erratic operation of the onan...
>
>
>
>
> Ken Burton wrote on Sun, 25 April 2010 20:50
>> Bead Blast or use a fine wire brush in a dremmel tool. The dremmel
>> will take you longer.
>>
>> Ken B.
>
>
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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