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Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
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Soda blasting case question

In the past, I've soda blasted my 3.2 intake that was powder coated. It took a ton of media to complete, but was happy with the results leaving a nice, clean, natural looking aluminum.

Anyways, was wondering if soda will take the hard-coated corrosion off my cases with minimal effort?

Meaning, will it clean this corrosion at all? If so, will 1 - 50lb bag of soda do it? More?

I didn't neutralize the caustic chemicals in Easy-Off the first time I cleaned the cases, and the next day, it developed a thick layer of corrosion. The cases looked brand new the day I did it though. Very disappointed and was a learning lesson for sure!

See photo for reference.

Reason for the question is, is I have to drive 2 hours away to use my fathers blaster and would hate to waste my time and money if it can't be done reasonably.

Trying to plan ahead.

Whatcha say PP braintrust???? Anyone done this?

TIA
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, soon to be 993SS cams and GSXR 750 ITB's fed by 964 intake, Borg-Warner S366 turbo @ 1.4 bar, Treadstone full bay IC, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MegaSquirt 2 (v3.57 board) w/EDIS, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
Old 02-13-2017, 07:30 AM
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The outcome with soda is more dependent than glass on the pressure at the tip and the size of the tip and the cfm of the compressor. In my experience a little 3hp 9-10 cfm comp. will give marginal results. I have 8hp of compression (two comp in parallel going into one 60 gal tank) and I use a med tip gun from tptools and I run 110 psi to the gun. I get good results with that set up but it def. takes longer than with glass. Now I'm talking a siphon gun, the kind you see in a cabinet. If you are talking a pressure gun like is used outside with a pressurized tank that holds the media you will get better results than with a siphon gun. What size is your Dad's comp? 50 lb should do it.
Old 02-13-2017, 11:12 AM
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There are a couple different grades of soda but boosted is right. It really comes down to cfm's I wouldn't even bother if you can't get a hold of a good compressor. Look in your area for someone who does dry ice blasting. It will run you $150 to $200 but well worth it if you can't find a worthy compressor.
Old 02-13-2017, 11:20 AM
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Chain fence eating turbo
 
Join Date: Dec 2008
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Let's just say I have enough compressor to drive a small factory!

1 large body shop industrial horizontal-tank compressor daisy chained to 2 - 80 gallon tank with 2-stage compressors.

My dad's resto shop doesn't run out of air.

Last edited by Tippy; 02-13-2017 at 05:05 PM..
Old 02-13-2017, 12:33 PM
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Mighty Meatlocker Turbo
 
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Quote:
Originally Posted by boosted79 View Post
The outcome . . . is more dependent . . . on the pressure . . . and the size of the tip . . .
???

!!!

Old 02-13-2017, 03:40 PM
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If you have any soda left over you can use it as toothpaste..
Old 02-13-2017, 06:18 PM
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Mighty Meatlocker Turbo
 
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^^^

I bet that JustTheTIPpy is thinking that blasting soda won't cut it with regard to cleaning my trap - probably need industrial bleach, or sulfuric acid, or both !!!
Old 02-13-2017, 07:11 PM
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Chain fence eating turbo
 
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Lol
Old 02-13-2017, 07:51 PM
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Rawknee I think you need to try some oven cleaner..
Old 02-14-2017, 06:28 AM
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Mighty Meatlocker Turbo
 
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^^^

I think the oven cleaner might put itself right back in the can!!!
Old 02-14-2017, 10:43 AM
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A buddy of mine has a older mag case engine he is about to rebuild. It has a little corrosion inside the case and grime that is baked on. Would it be safe to use soda or even dry ice on the inside of the case?
Old 03-19-2017, 04:15 PM
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Chain fence eating turbo
 
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Quote:
Originally Posted by mikedsilva View Post
A buddy of mine has a older mag case engine he is about to rebuild. It has a little corrosion inside the case and grime that is baked on. Would it be safe to use soda or even dry ice on the inside of the case?
Those are the 2 best media's to use...
Old 03-19-2017, 06:23 PM
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Make sure to flush the oil galleys well afterwards if using the soda.
Old 03-20-2017, 03:44 AM
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Quote:
Originally Posted by boosted79 View Post
Make sure to flush the oil galleys well afterwards if using the soda.
will do
Old 03-20-2017, 03:47 AM
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Do a search of 'vapor honing technologies' - it appears to be a great alternative to dry blasting...
Old 03-20-2017, 05:07 PM
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Old 03-20-2017, 05:09 PM
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Chain fence eating turbo
 
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^ gawd that looks great!
Old 03-20-2017, 05:23 PM
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Those look brand new!
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Old 03-21-2017, 05:17 AM
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Looks like it's still an abrasive blasting though, so you don't get the benefit of not having any abrasive grit in your engine, which seems to be the point of soda blasting (?)
Old 03-21-2017, 05:58 AM
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Quote:
Originally Posted by Wiegs View Post
Looks like it's still an abrasive blasting though, so you don't get the benefit of not having any abrasive grit in your engine, which seems to be the point of soda blasting (?)
Exactly... my local vapour blasting plate declined to clean our engine case as it uses tiny glass beads and these would get inside oil galleries etc...
Old 03-21-2017, 10:46 AM
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