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How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 6:50 pm
by drcollie
Any tips on how to make this look better without removing the engine from the frame and getting into media blasting, etc.
19 73 R75/5. Thanks! Duane
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 7:50 pm
by Major Softie
I think you can soda blast in-frame.
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 7:58 pm
by SteveD
Major Softie wrote:I think you can soda blast in-frame.
In a paddock somewhere...it can get messy.
https://www.youtube.com/watch?v=KULVhW2tw4I
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 8:05 pm
by Mal S7
You can get a lot of it with elbow grease, scotchbrite (brillo?) pads and wire brushes and WD-40. Remove the front and top covers, the clam-shells and clean them on a bench, easy!
Takes some time, just do it every time you wash it and in just a few years ...
In between the fins is a real bastard, you may need to get that blasted.
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 8:36 pm
by Rob
My heads looked SO PRETTY (like brand new!) when they returned from Bob Grauer when he did the valves for me.
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 8:46 pm
by melville
I've done a bit of that. The process I used is described toward the end of the first page:
viewtopic.php?f=1&t=148
I did have the motor and trans out of the frame, but it should be doable in the frame as well. Not necessary to blast the cylinders.
I live in a place with a corrosive atmosphere, within sight of the ocean and high humidity year round. I have to spend a couple hours every spring with a ScotchBrite pad to keep it fresh.
Re: How to deal with oxidation on engine cases?
Posted: Sun Nov 29, 2015 9:23 pm
by Rob
melville wrote:I've done a bit of that. The process I used is described toward the end of the first page:
viewtopic.php?f=1&t=148
I did have the motor and trans out of the frame, but it should be doable in the frame as well. Not necessary to blast the cylinders.
I live in a place with a corrosive atmosphere, within sight of the ocean and high humidity year round. I have to spend a couple hours every spring with a ScotchBrite pad to keep it fresh.
gspd!!!
(an old, long not-posted member, Duane. He taught melville everything he knows about brightening! That link is a good one to study!)
Re: How to deal with oxidation on engine cases?
Posted: Mon Nov 30, 2015 2:03 am
by ME 109
I'd move to Albury, NSW, Australia. Or Bethanga!
No corrosion here.
Re: How to deal with oxidation on engine cases?
Posted: Mon Nov 30, 2015 4:01 pm
by 2valve
Have a go at using the liquid type of mag wheel cleaner with a stiff nylon brush.I use a brand called Kitten ,really safe to use. Make sure that the part you're cleaning is really wet with the cleaner and start scrubbing. Just make sure that you have you're garden hose ready for clean up time.Worked for me.
Re: How to deal with oxidation on engine cases?
Posted: Mon Nov 30, 2015 11:53 pm
by Chuey
On the cases, you can clean with aluminum wheel cleaner, then spray with aluminum color engine/exhaust paint and before the paint dries, scrub it into the pores of the engine with a Scotchbrite abrasive pad. It sounds kind of corny and unsophisticated but it does work and you can kind of make your own procedure for how nutso you want to go with it.
Chuey
