Clean engine case

[gatorwyatt]

Thanks cru62...

Typically soda doesn't work in a syphon blaster because of how it falls...it needs a pressure vessel to push it out of the machine...with that said I have witnessed the same results in a small syphon blaster and it does work if you are using small equipment...it will be slow but does work...in the soda world there are actually different grit sizes and also blends.mixed with aluminum oxide but no need for wasting extra for that...there is also the alkalinity issue on your case...wash with water and soap...it is probably a different grit size in food grade soda versus blasting media but will be small rather than larger and will once again just be slow....

DO NOT use garnet or anything 80 grit on a case...think of the number in front of the media as grit in sandpaper ...the soda I use for boat bottoms and fire remediation is 260.... And the soda doesn't act like regular abrasive...it is going to shatter upon impact and refract...good for a very few things in the blasting world due to the cost / results...wire mesh air cleaners would be a great example of a good use....the metals can also be washed after with soda without rust flash...it doesn't etch the metal like an abrasive does.
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www.blastserv.com

wanted:
RHD Barndoor floor mat..reproduction is fine

[TomSimon]

[veedubcrazy]

[Speedsterboy]

Sorry for the hijack, additionally, does anyone know how I can get rid of the really dark discolouration of my Solex carbs? The body looks oxidised or something..

[gatorwyatt]

[faster]

Here`s one that I`ve been working on the last few days. It`s must be a factory replacement engine or something never had numbers stamped on it a first for me. All in all it`s in good shape very light ware in the mains and the cam bore all stock size with about .002 ths egg shape in the cam bore not bad at all. The engine had been paint blue at one time so it needed cleaned inside and out. Anyway old 80 grit glass bead is what I used more like a 100 grit now. The engine was grease free when I started and I tapped all the bearing surfaces with black tape blasted everything and then pulled the oil plugs for cleaning and shined up the bearings with steelwool. The crazy part was after pulling the plugs and looking in with a flashlight they were all very clean and grit free except for a half eaten corn kernel crazy mice. Also I may spray it with some chrome solution from are old chrome tank at work it will stain it the gold color. Here`s some pictures.

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My 59 panel plus 36hp valve covers http://s122.photobucket.com/albums/o265/faster50/59%20panel/

[jon mccoy]

has anybody used coal slag to blast their engine? any left over residue will just break down in the oil and wouldnt cause any damage.

[Jacks]

.002 oval in the cam bore may be problematic. You likely will have variable valve lash.
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Jack Staggs
Actual name

[txoval]

Here's what I did:

Took apart, used degreaser and water

Soda Blasted and washed with water

Pulled plugs and tapped (including for full flow)

Cleaned oil paths with gun cleaning brushes/patches

Threw case halves in dish washer (please note with stainless interior, if plastic you'll be divorced or buying a new one). Used the steam and sanitize cycle. It's amazing how much stuff comes out.

Machined case at RIMCO, then RIMCO steamed washed

Cleaned again with gun cleaning brushes/patches

High heat clear coat added to exterior

[IN2VWS]

I cleaned these up for someone. They came up well.

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[D-train]

sent my -20- case to john 2day so will post pics on completion.
before

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shiny paint doesnt make it worth any more

[RareAir]

[henry roberts]

he rubs them with his sack.













(john'll get it)

[D-train]

[gatorwyatt]

Ok...the above case posted by Dtrain was not shot with soda...if it was it was shot in a cabinet that contained soda that was used and showed little results during recycling and an abrasive was added...OR, it was a cabinet that was loaded with Armex brand media that is blended with aluminum oxide... I know this because I do this type work regularly and providing detailed terminology and results to customers and the outcome of blast work is what my company specializes in.

Second or third hand passing of info will cause lots of misinformation and I feel it needs to be put to rest...I will also say that the above case will have a very nice appearance once Alodine is applied.

This is my engine case for my 54' truck...I soda blasted this case at 120psi using a No.5 nozzle (5/16) and this was thoroughly cleaned...it has marbling and discoloration in the magnesium. Soda is 2.8 on the mohs scale of hardness therefore will not do any work or etch the magnesium and only clean it...when you shoot something higher like a 5 or 6 (glass beads or crushed glass)it has the capacity to clean,etch,deflash or peen the metal with an insignificant amount of metal removal.

With all of that said I will use a true potters brand spherical glass bead to finish my case then it will be cleaned and Alodined to achieve the desired restored look we all are searching for. I shot this case as a preliminary cleaning and to document this for all to see.


Also...for the guy wanting to use coal slag, don't waste your money or time.it will look like a bass boat!
_________________
www.blastserv.com

wanted:
RHD Barndoor floor mat..reproduction is fine

[D-train]

Finished case! Thanks heaps john.

From what it started as its come up a treat. Needs a bit of work to get it running now.
As for the 2nd/3rd hand info, johns site is:
http://www.martinandking.com/Martinandking/Wet_Blasting.html
And I'm sure he should be happy to answer questions, I'm not sayin what or how it's done so noone gets the wrong info.
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shiny paint doesnt make it worth any more

[snowbug]

[3foldfolly]

Back in the late 70's we kept a fresh 55 gallon barrel of carb clean to dip them in. Let them soak in there for an hour or two, rinse with water and blow dry with compressed air.

[jon mccoy]

d-train, is that case painted or just really clean? if its just really clean, how long is it gonna look like that inside your car?

[IN2VWS]

It's just really clean.
_________________
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(ọ\ ¡ /ọ)¹⁹⁵⁴ ¹⁹⁵¹
(⦷ ⥢ Ĭ ⥤ ⦷) 𝗞_𝗔_𝗥_𝗠_𝗔_𝗡_𝗡 𝓖𝓱𝓲𝓪¹⁹⁵⁶
⨴⨵--⊗--⨴⨵ 𝕊ℙ𝟚¹⁹⁷³
𝟵_𝟭_𝟰¹⁹⁷³