Hot tank the pistons? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-06-2013, 04:05 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: Springfield, MO
Age: 29
Posts: 1,108
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Hot tank the pistons?

I have something unusual to talk about. Can pistons be cleaned up by dipping them in a hot tank? There is some sort of corrosion on the pistons I took out of my 2.3 Ford SOHC Turbo engine and they were low mile OEM pistons so id like to reuse them.

They were in a box that it looks like an animal got into and pee'd all over them. Kinda gross I know but I think if i wash them off with hot water and maybe have them hot tanked that they would be OK? Or I have some cast iron cleaner here I could dip them in myself.

I know you aren't supposed to do that to aluminum, but these shouldn't be aluminum I don't think? Coming from a turbo engine they should be some kind of forged steel I would think.

What do you guys think?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-06-2013, 04:12 PM
Project89's Avatar
Registered User
 
Last photo:
Join Date: Oct 2011
Location: utah
Posts: 989
Wiki Edits: 0

Thanks: 12
Thanked 36 Times in 33 Posts
all pistons are aluminum , either cast , hyperutectic or forged.

put them in the parts washer and let them soak and u can scrub them with a fine scotch bright pad , if u dont have a parts washer soak them in a bucket full of kerosene or diesel fuel.

any corrosion on the sides/pistons skirts and they should be thrown away, if they are pitted or corroded on the pistons tops u can lightly sand/polish them smooth but only on the piston top and it depends on how bad the corrosion/pitting actually is
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-06-2013, 04:15 PM
Registered User
 
Last photo:
Join Date: Jan 2009
Location: Springfield, MO
Age: 29
Posts: 1,108
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
I dont see any pitting anywhere, just a white powder like substance on the surface. But yes it is on the skirts of the pistons
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-06-2013, 04:42 PM
Project89's Avatar
Registered User
 
Last photo:
Join Date: Oct 2011
Location: utah
Posts: 989
Wiki Edits: 0

Thanks: 12
Thanked 36 Times in 33 Posts
Quote:
Originally Posted by Torque454 View Post
I dont see any pitting anywhere, just a white powder like substance on the surface. But yes it is on the skirts of the pistons
clean them and scrub with a soft bristle brush on the skirts and have them measured on the skirts to see if they are still within spec .

the white powder is just oxidation which happens to aluminum but if its severe enough ur piston to cyl wall clearance can be thrown off and then u will get piston slap/rock
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-06-2013, 05:51 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,176
Wiki Edits: 326

Thanks: 795
Thanked 1,091 Times in 902 Posts
Use a green Scotchbrite pad like you buy at the grocery for washing dishes. The pad material is softer than the aluminum and will clean it without removing any material.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-06-2013, 05:53 PM
hcompton's Avatar
Old & Furious
 
Join Date: Oct 2012
Location: MD
Age: 42
Posts: 1,074
Wiki Edits: 0

Thanks: 6
Thanked 87 Times in 84 Posts
They are alum do not put them in acid they will disolve. They are forged as well so you want to reuse them.

Carb cleaner and scrub brush or parts washer. Its just oxidation like rust on alum. Scrotchbrite might be ok if your gentle.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-06-2013, 06:10 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,212
Wiki Edits: 0

Thanks: 27
Thanked 292 Times in 272 Posts
If you want them cleaned by a shop. Take them to a trans rebuilder. His chemicals will clean them..

Most machine shops "Hot tank". If they still use one. Is for materials other than aluminum. Aluminum will turn black and slowly disolve.

The government has stopped or restricted the "good stuff" we used to clean with.

If you want to do them yourself. Use diluted Super Clean/Purple power or Simple green with the previously mentioned green Scotchbrite.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-10-2013, 07:52 AM
Registered User
 
Join Date: Nov 2011
Location: Virginia
Posts: 705
Wiki Edits: 0

Thanks: 0
Thanked 75 Times in 75 Posts
Caustic soda is the "soap" used in old-time hot tanks. Most shops stopped using that more than 20 years ago. It WILL "eat" aluminum, as others have already pointed out.

We use "Aluma-Brite" in our jet-washer (spray cabinet). Same stuff tranny shops use.

After they've been through the chemical wash, a thorough cleaining of the ring grooves is necessary. We turn the air pressure "down" to about 50 lbs. and glass-bead the ring grooves and the head of the piston. DO NOT blast the skirts...

Another thorough wash in solvent is next, followed by a "rinse" in clean water, blown dry and a small amount of oil added where the pins go through the piston/rod.

Jim
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 01-10-2013, 08:50 AM
Registered User
 
Join Date: Dec 2010
Location: wisconsin
Posts: 91
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 6 Posts
I recently found that Simple green HD (only availible at Home Depot) in my HF ultrasonic cleaner does a great job of cleaning all the carbon off pistons even in the ring grooves. About 20 minutes for each piston and they come out looking like new.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 01-10-2013, 09:14 AM
Member
 
Last photo:
Join Date: Aug 2003
Location: surrey bc canada
Age: 74
Posts: 654
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
cleaning pistons

Quote:
Originally Posted by vpd66 View Post
I recently found that Simple green HD (only availible at Home Depot) in my HF ultrasonic cleaner does a great job of cleaning all the carbon off pistons even in the ring grooves. About 20 minutes for each piston and they come out looking like new.
do you have a dish washer,if so throw them in the dish washer,then scotch bright the skirts.Some may laugh but i have used a old dish washer for years as a parts washer.it is great for engine and trans parts as a final wash befor assembly.just be sure tospray some sort of lube at the end of wash to prevent rust or corosion. Dont ask the wife ,forgivness is easeyer than permission. cliff
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is this Gas Tank neck bad? Tank? Clean it? Leave it? gotmud Engine 2 07-06-2011 01:43 PM
new kobalt- tank is hot vintagecar Garage - Tools 6 11-07-2009 06:27 AM
DYI Hot tank PHATHOM Engine 3 06-23-2006 10:31 PM
Jet Wash Cabinet/hot Tank Ideas NAIRB Garage - Tools 5 02-09-2004 07:57 PM
Need Tank Sender for Custom Gas Tank.... bg Engine 3 11-05-2002 06:13 PM


All times are GMT -6. The time now is 04:03 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.