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#1 txdieseldog OFFLINE  

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Posted June 21, 2015 - 11:16 PM

OK guys, need some input. I finally got started on the rebuild of my 20 hp B&S V-twin for my Jac. I sprayed degreaser and power washed it before dis-assembly, but it has a weird yellowy finish in spots that looks like left over clear coat on the block. I'd like it squeeky clean but I'm not sure I want to go the bead blast route. Any ideas? Anything you guys have seen that will beautify the aluminum without harsh side effects? Thanks in advance.

 

Barry


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#2 Bill 76 OFFLINE  

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Posted June 21, 2015 - 11:34 PM

DON"T bead or sand blast it , that stuff will get into places and you will never get it out----Walnut shells is supposed to work good for blasting cuz anything that can't be cleaned out won't hurt anything same goes for soda blasting just rinse it off with water.Gunk brand carb cleaner dip cans works great but for a block you would need a 5 gallon bucket and it pricey.


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#3 chieffan ONLINE  

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Posted June 21, 2015 - 11:45 PM

Try some cheap oven cleaner.  I use it on most of the items with grease/dirt/grime/?? I want removed including paint.  Learned this from a friend that restores and paints old tractors.  Spray it on, let it set for 15 - 20 min and power wash it off.  Heavy areas may need a couple try's and caked stuff more.  Wear eye protection as this stuff is caustic.


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#4 boyscout862 ONLINE  

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Posted June 22, 2015 - 02:47 AM

I would not use walnut shell pieces on an engine. During WWII the OSS used ground up walnut shells to sabotage Nazi engines. A small rubber package of powdered walnut shells would be dropped in the engine oil fill opening. The rubber dissolved and released the powder. It would cause the engine to sieze in a short time. Good Luck, Rick


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#5 Alc ONLINE  

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Posted June 22, 2015 - 05:38 AM

I'm always afraid I would get abrasives in the block and they wouldn't come out during the final cleaning . Since your mostly concerned with the external , could you put the head , old gaskets on , duct tape/ seal the other openings and then glass bead the outside ?


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#6 crittersf1 OFFLINE  

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Posted June 22, 2015 - 07:48 AM

I'm always afraid I would get abrasives in the block and they wouldn't come out during the final cleaning . Since your mostly concerned with the external , could you put the head , old gaskets on , duct tape/ seal the other openings and then glass bead the outside ?

Still will get into places that you didn't know existed.


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#7 larrybl ONLINE  

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Posted June 22, 2015 - 01:54 PM

Scotch brite pads and simple green here. takes some elbow grease and works fine.


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#8 Marty'70 ONLINE  

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Posted June 22, 2015 - 03:45 PM

Try some cheap oven cleaner.  I use it on most of the items with grease/dirt/grime/?? I want removed including paint.  Learned this from a friend that restores and paints old tractors.  Spray it on, let it set for 15 - 20 min and power wash it off.  Heavy areas may need a couple try's and caked stuff more.  Wear eye protection as this stuff is caustic.

Love the oven cleaner too! And a big ditto on using good PPE. That stuff burns bare skin.
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#9 txdieseldog OFFLINE  

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Posted June 23, 2015 - 10:38 PM

I have heard from another forum that "Purple Power" from walmart or dollar general works well. I soaked half in 3 gallons and flipped it tonight. It's looking pretty good. Thanks for all the input. I guess I was just looking for that one quick miracle, but I should have known better!!! :wallbanging:  It still takes some effort with these ol' rigs. Aint no such thing as the easy way out!! :(


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#10 KennyP ONLINE  

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Posted June 24, 2015 - 04:39 AM

Purple Power is pretty good stuff. Use it often!


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#11 skyrydr2 ONLINE  

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Posted June 24, 2015 - 05:15 AM

Take the block to the local tranny shop and ask him if he can put it in his washing machine! It will come out spotless and wont hurt the aluminium. Or put it in your own dish washer( make sure the wife is no where to had or she will surely kill you) a little cascade and it will look like new.
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#12 txdieseldog OFFLINE  

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Posted June 24, 2015 - 11:26 PM

The Purple Power got it looking pretty good with just an overnight soak and a power washer. I'll take some pics tomorrow and post my results.


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#13 Jahcure OFFLINE  

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Posted June 25, 2015 - 03:50 PM

Put in dish washer and take before and after pics 😀

#14 jabelman OFFLINE  

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Posted June 25, 2015 - 07:54 PM

Yeah I was actually surprised by that purple spray. It did a decent job on a frame. I saw it at Walmart a few weeks ago gave it a try.




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