Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,383
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
__________________
Cory - '87 C3.2 (3.4, stock 3.2 heads, cams, intake, with 75mm Mustang TB) Guards/Blk - turbos new to old 1). Borg Warner S366 (66mm comp/73mm turb/0.91 T4 divided ~1.4 bar), 2). Holset HX40 8-blade (58mm/"P" trim 0.84 T4 divided 1.4 bar), 1/4 mile 12.02 @ 129 MPH (street tires), 3). Turbonetics 60-1 HiFi (60mm/"P" trim 0.81 A/R T4 open 1.2 bar), 431whp - MegaSquirt II/EDIS ignition/80lb inj
Old 02-13-2017, 07:30 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Jan 2015
Posts: 1,006
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
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Dec 2014
Location: Syracuse,Ny
Posts: 1,110
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
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,383
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
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Knee Pads are Overrated!
 
Rawknees'Turbo's Avatar
 
Join Date: Apr 2016
Location: Norf TexASS
Posts: 3,325
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
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jan 2015
Posts: 1,006
If you have any soda left over you can use it as toothpaste..
Old 02-13-2017, 06:18 PM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Knee Pads are Overrated!
 
Rawknees'Turbo's Avatar
 
Join Date: Apr 2016
Location: Norf TexASS
Posts: 3,325
^^^

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
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,383
Lol
Old 02-13-2017, 07:51 PM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Jan 2015
Posts: 1,006
Rawknee I think you need to try some oven cleaner..
Old 02-14-2017, 06:28 AM
  Pelican Parts Technical Article Directory    Reply With Quote #9 (permalink)
Knee Pads are Overrated!
 
Rawknees'Turbo's Avatar
 
Join Date: Apr 2016
Location: Norf TexASS
Posts: 3,325
^^^

I think the oven cleaner might put itself right back in the can!!!
Old 02-14-2017, 10:43 AM
  Pelican Parts Technical Article Directory    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Jul 2013
Location: Brisbane, Australia.
Posts: 290
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
  Pelican Parts Technical Article Directory    Reply With Quote #11 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,383
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
  Pelican Parts Technical Article Directory    Reply With Quote #12 (permalink)
Registered User
 
Join Date: Jan 2015
Posts: 1,006
Make sure to flush the oil galleys well afterwards if using the soda.
Old 03-20-2017, 03:44 AM
  Pelican Parts Technical Article Directory    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jul 2013
Location: Brisbane, Australia.
Posts: 290
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
  Pelican Parts Technical Article Directory    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Mar 2012
Location: Metropolitan Chicago, City & Exurbs
Posts: 201
Garage
Do a search of 'vapor honing technologies' - it appears to be a great alternative to dry blasting...
Old 03-20-2017, 05:07 PM
  Pelican Parts Technical Article Directory    Reply With Quote #15 (permalink)
Registered User
 
Join Date: Mar 2012
Location: Metropolitan Chicago, City & Exurbs
Posts: 201
Garage

Old 03-20-2017, 05:09 PM
  Pelican Parts Technical Article Directory    Reply With Quote #16 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,383
^ gawd that looks great!
Old 03-20-2017, 05:23 PM
  Pelican Parts Technical Article Directory    Reply With Quote #17 (permalink)
Registered User
 
Cairo94507's Avatar
 
Join Date: Feb 2010
Location: San Ramon Valley, CA
Posts: 1,098
Garage
Those look brand new!
__________________
1971 914-6 #0372
2016 Audi S3 DD
2010 997.2 C4S 6 Speed
Old 03-21-2017, 05:17 AM
  Pelican Parts Technical Article Directory    Reply With Quote #18 (permalink)
Registered User
 
Join Date: May 2014
Posts: 1
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
  Pelican Parts Technical Article Directory    Reply With Quote #19 (permalink)
Registered User
 
Join Date: Jul 2013
Location: Brisbane, Australia.
Posts: 290
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
  Pelican Parts Technical Article Directory    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 05:07 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.