Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > Overhaul

Reply
 
Thread Tools Display Modes
  #1   IP: 69.250.109.188
Old 03-16-2021, 09:55 PM
scratchee scratchee is offline
Senior Member
 
Join Date: Feb 2020
Posts: 97
Thanks: 27
Thanked 44 Times in 28 Posts
Cleaning a bare block: acid in cylinders?

I have my block stripped bare and am trying to figure the best way to clean it, worst need being the cooling passages. If I use some sort of acid bath, could it damage the cylinder walls? I have no need to do anything with the cylinders, but since everything is stripped off the block I can't exactly "flush" the passages alone since there are openings everywhere.

Is there a standard approach at this stage? Thanks for any advice!
Reply With Quote
  #2   IP: 67.234.39.221
Old 03-17-2021, 02:53 AM
Marian Claire's Avatar
Marian Claire Marian Claire is offline
Afourian MVP
 
Join Date: Aug 2007
Posts: 1,797
Thanks: 33
Thanked 129 Times in 94 Posts
IIRC. I used a pressure washer after a lot of poking and brushing of the water passages. Had to quickly oil everything to stop flash rusting.

Dan
S/V Marian Claire
Reply With Quote
  #3   IP: 32.211.28.40
Old 03-17-2021, 09:15 AM
Al Schober's Avatar
Al Schober Al Schober is offline
Afourian MVP
 
Join Date: Jul 2009
Location: Uncasville, CT
Posts: 2,002
Thanks: 16
Thanked 578 Times in 405 Posts
When you clean the passages, pay attention to the small ones in the top of the block. These tend to scale up with raw water cooled engines. A drill bit or a diamond burr in a Dremel tool are good weapons. The passages near the valves don't go straight but have a dogleg in them. Save the acid flush for after things are back together.
This is also a good time to install studs for the cover plate into the water jacket. The original bolts are a known source of leaks.
Reply With Quote
  #4   IP: 67.169.215.221
Old 03-17-2021, 02:49 PM
ronstory's Avatar
ronstory ronstory is offline
Afourian MVP
 
Join Date: Feb 2016
Posts: 404
Thanks: 106
Thanked 208 Times in 152 Posts
A sturdy coat hanger and lot of poking in the corners works well for round the cylinder and passages. I also use these mounted int a drill to get into nooks and crannies.

https://www.amazon.com/HTS-101G5-Bri...6006627&sr=8-7

A regular screwdriver can be good for the edges of the passageways.

Also, the most scale I got out of the head was when I replaced the core/freeze plugs. This was after using all the above tools. I was simply astounded as how much extra scale came out after driving in the new plugs.
__________________
Thanks,
Ron
Portland, OR
Reply With Quote
The Following User Says Thank You to ronstory For This Useful Post:
Surcouf (03-18-2021)
  #5   IP: 69.250.109.188
Old 03-17-2021, 07:18 PM
scratchee scratchee is offline
Senior Member
 
Join Date: Feb 2020
Posts: 97
Thanks: 27
Thanked 44 Times in 28 Posts
Thanks everyone. I'll hold off on the acid for now.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Procedure for acid flushing and pressure flushing Don Moyer General Maintenance 55 06-14-2022 07:55 PM
Muriatic Acid Process for cleaning cooling system/Block Greg Kingman Cooling System 11 02-28-2012 12:51 PM
Manifold Acid Cleaning dthibaul Exhaust System 2 11-06-2011 05:23 PM
Cracked/Leak in Block?? gdasw Troubleshooting 5 10-30-2008 10:37 AM
Engine running "fine" until it stopped suddenly within a few revolutions. sundowner Troubleshooting 7 12-18-2004 09:37 AM


All times are GMT -4. The time now is 11:02 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2024 Moyer Marine Inc.

All Rights Reserved