Return to the home page...

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

Thread Tools Display Modes
  #1   IP:
Old 11-20-2020, 12:47 PM
WAcat30 WAcat30 is offline
Frequent Contributor
Join Date: Jul 2009
Posts: 7
Thanks: 1
Thanked 1 Time in 1 Post
Engine passage question

Hi all. I'm attempting to refurb a CL A4 purchase. One task is removing a good amount of rust debris in the block. Per a4 manual, ive been able to excavate and open passages via coat hanger/welding rods. One passage has me puzzled, however. Its in the flywheel end, starboard side of the motor under the starter. might anyone know where this passage should lead? Seems lower than the cylinder cooland area, but doesn't seem oil related either. Pic attached. Thanks much for any assist.
Attached Images

Last edited by WAcat30; 11-20-2020 at 12:58 PM.
Reply With Quote
  #2   IP:
Old 11-20-2020, 01:23 PM
jcwright jcwright is online now
Afourian MVP
Join Date: Jul 2012
Posts: 106
Thanks: 3
Thanked 64 Times in 44 Posts
That is the forward drain port.
Reply With Quote
The Following User Says Thank You to jcwright For This Useful Post:
WAcat30 (11-20-2020)
  #3   IP:
Old 11-20-2020, 02:03 PM
WAcat30 WAcat30 is offline
Frequent Contributor
Join Date: Jul 2009
Posts: 7
Thanks: 1
Thanked 1 Time in 1 Post
Thanks much. The digging resumes...
Reply With Quote
The Following User Says Thank You to WAcat30 For This Useful Post:
Surcouf (11-23-2020)
  #4   IP:
Old 11-24-2020, 09:34 PM
Al Schober's Avatar
Al Schober Al Schober is offline
Afourian MVP
Join Date: Jul 2009
Location: Uncasville, CT
Posts: 1,785
Thanks: 11
Thanked 384 Times in 285 Posts
Curious why you saw fit to paint the surfaces of the cylinders?
More important, I recommend you install studs in those 8 holes for the jacket cover plate. This will eliminate a leak path from the water jacket. Those bolts are known leakers. Moyer sells a kit for this, but if you can get a foot of 5/16 all-thread, you can make your own studs then seat them in the block with JB Weld. Use stainless nuts and washers to reinstall the cover plate.
Reply With Quote
The Following 2 Users Say Thank You to Al Schober For This Useful Post:
sastanley (11-24-2020), TimBSmith (11-25-2020)
  #5   IP:
Old 11-24-2020, 11:11 PM
sastanley's Avatar
sastanley sastanley is online now
Afourian MVP
Join Date: Sep 2008
Location: Solomons, MD
Posts: 6,798
Thanks: 810
Thanked 452 Times in 340 Posts
WAcat30. - I put a penzil zinc in that spot!! - and a huge!!!!!! + 1 on Al's recommendations with studs in the sideplate!!
"Twice Around" - '77 Catalina 30, #511 with original A-4 & MMI manifold.
She is even happier with fresh paint on the topsides!
Reply With Quote

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
Engine starts, runs a few seconds and quits Neuse River Sailor Troubleshooting 24 08-11-2017 06:57 PM
2010 MoM rebuilt engine suddenly won't turn over denesszabo Troubleshooting 13 12-01-2015 10:34 PM
RWC Engine temperature question Ajax Cooling System 27 11-19-2015 01:13 PM
Fuel-Related Engine Shutdowns Don Moyer Fuel System 32 02-18-2011 04:36 PM
Bent push rods in new engine with 10 hours on it Frank Troubleshooting 3 09-14-2010 02:23 AM

All times are GMT -4. The time now is 02:46 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2021 Moyer Marine Inc.

All Rights Reserved