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Author Topic: Head clean up tips  (Read 5468 times)

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Offline marc11

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Head clean up tips
« on: January 25, 2014, 06:50:40 AM »
My son and I are rebuilding his old KDX50 which includes the top end. We have two issues first we have some carbon build up in the head and block, not much but some. Second there is a lot of old baked dirt on the fins.

Any advice on how to remove the carbon and getting the baked on dirt off?

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Offline sleazy rider

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Re: Head clean up tips
« Reply #1 on: January 25, 2014, 09:55:16 AM »
Sand or bead blasting. 
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Offline M.Brane

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Re: Head clean up tips
« Reply #2 on: January 25, 2014, 10:00:14 AM »
 I would do soda myself. Sand or glass bead is nearly impossible to completely remove from aluminum. A good soda blast should remove 99% of the crud without removing any material from the parts.

Offline marc11

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Re: Head clean up tips
« Reply #3 on: January 25, 2014, 10:43:26 AM »
I do not have access to a media blaster.

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Offline coucours grad

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Re: Head clean up tips
« Reply #4 on: January 25, 2014, 11:19:09 AM »
Mix 70% diesel fuel and 30% atf.....enough for cover all the parts in a contaier large enough to fix them....cover, let soak and occasionally scrubb. the mix with cut the buildup you just need to knock it loose.
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Offline marc11

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Re: Head clean up tips
« Reply #5 on: January 25, 2014, 11:22:55 AM »
Mix 70% diesel fuel and 30% atf.....enough for cover all the parts in a contaier large enough to fix them....cover, let soak and occasionally scrubb. the mix with cut the buildup you just need to knock it loose.

Would kerosene work?  I'm guessing yes but just to check.

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Offline coucours grad

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Re: Head clean up tips
« Reply #6 on: January 25, 2014, 11:36:57 AM »
It will. It'll take longer.

I used to use the mix to clean V-8 engine parts and still use it to cut grime out of old neglected firearms.


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Offline marc11

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Re: Head clean up tips
« Reply #7 on: January 25, 2014, 11:50:41 AM »
It will. It'll take longer.

I used to use the mix to clean V-8 engine parts and still use it to cut grime out of old neglected firearms.

Thanks I'll give it a try. 

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Offline Jim

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Re: Head clean up tips
« Reply #8 on: January 25, 2014, 01:14:08 PM »
IIRC, the diesel/atf mix is often used as a frozen nut/bolt penetrate.
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Offline Cablebandit

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Re: Head clean up tips
« Reply #9 on: January 25, 2014, 02:05:06 PM »
If you have an air compressor you can make your own soda blaster pretty cheap.

Offline Cablebandit

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Re: Head clean up tips
« Reply #10 on: January 25, 2014, 02:06:00 PM »
ATF / Acetone mixed 50/50 is about the best rusty bolt solution out there. Cheapest too.

Offline marc11

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Re: Head clean up tips
« Reply #11 on: January 25, 2014, 02:25:00 PM »
If you have an air compressor you can make your own soda blaster pretty cheap.

I do. Got a link to a how to?

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Offline Cablebandit

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Re: Head clean up tips
« Reply #12 on: January 25, 2014, 02:30:19 PM »
Not handy. I'm out of town at my inlaws on an iPod touch.

I think if you google homemade baking soda blaster you may get a hit.

Basically you just use the blow gun attachment on your air hose and attach some tubing to it to create a Venturi effect to draw the soda up the hose and blast it onto you work piece.

If Google doesn't find you anything I'll try to find a real computer later and pull something up.

Offline marc11

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Re: Head clean up tips
« Reply #13 on: January 25, 2014, 02:44:44 PM »
I'll give it a search.

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Offline mxvet57

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Re: Head clean up tips
« Reply #14 on: January 25, 2014, 08:55:43 PM »
http://www.craftsman.com/craftsman-50-lb-sandblaster-kit-with-1-4-in/p-00916706000P?prdNo=1&blockNo=1&blockType=G1


I've had one since the late 70's and the only thing i have replaced is the nozzle tip.
« Last Edit: January 25, 2014, 10:25:27 PM by mxvet57 »
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Offline Veefer800canuck

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Re: Head clean up tips
« Reply #15 on: January 26, 2014, 03:55:20 AM »
If you have an air compressor you can make your own soda blaster pretty cheap.

I was just about to post that. There are videos on YouTube how-to.
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Offline Mac

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Re: Head clean up tips
« Reply #16 on: January 26, 2014, 02:09:48 PM »
Well, in the Navy, we used a swab or what you would call a "mop" to clean the heads.
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Offline kneescrubber

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Re: Head clean up tips
« Reply #17 on: January 26, 2014, 05:46:32 PM »
If you have an air compressor you can make your own soda blaster pretty cheap.


I do. Got a link to a how to?

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Offline coucours grad

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Re: Head clean up tips
« Reply #18 on: January 26, 2014, 06:02:59 PM »
 :bigok:
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Offline marc11

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Re: Head clean up tips
« Reply #19 on: January 27, 2014, 07:02:01 AM »
Will the soda medium remove any paint or just the dirt and carbon?  I suspect it may be a factor of psi and distance but wanted to know how careful I need to be ahead of time. I see I can get a medium spray gun for about $20 so I may do that and just shoot it over a trash can in the yard while wearing welders gloves.

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Offline sleazy rider

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Re: Head clean up tips
« Reply #20 on: January 27, 2014, 07:13:23 AM »
It'll take everything off down to bare metal.
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Offline Cablebandit

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Re: Head clean up tips
« Reply #21 on: January 27, 2014, 07:16:55 AM »
It should remove anything you point it at depending on PSI and distance.  Since you are working on aluminum you need to make sure you use something that won't beat the shit out of the aluminum.  Soda is very fine and will leave a smoother finish.  Remember the coarser the grit the rougher the finish.