Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Introductions

Reply
 
Thread Tools Display Modes
  #1   IP: 37.72.145.241
Old 09-08-2021, 02:50 AM
Hansejung2021 Hansejung2021 is offline
Member
 
Join Date: Aug 2021
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Smile Hello from Europe, Afourians! Overhaul incoming?

Hello everyone,

let me introduce myself:

My name is Till, 34 years old and from Germany. Since 2 years i was looking for a sailboat, the search wasnt easy cause I am running on a tight budget and had special wishes for a boat, it should have been a motorsailer (like a Fisher 25 or 30) or a classic cruiser.

One day I found an old "Bristol 29" right next to my home, 5 minutes away with my bike. At first sight it all looked good, the price was okay and i bought it. When the previous owner told me "thats is an old gas engine" i was thinking "okay, nvm I will get that out and replace it with a small diesel".

But that was before I found some works I need to do on the deck (rotten decks) and before I read more about the A4 and Moyer. Since I know Moyer and this Forum I am really thinking I should keep the Engine and may Overhaul it.

At this point I have veeeery less experiences with enginges, I once overhauled a 70ccm Engine on a small motorbike, but i guess thats not comparable. The Engine is still in the boat, the boat hasnt been in the water for at least 3 years. The previous owner told me, that the engine had been working till they got it out of the water, but I am not 100% sure if that is the truth.

I know (or more I guess) its a late model and for me it looks like everything is more or less original, mechanical fuelpump and so on.

Now I dont know whats the best way to get forward and thats where you come in to my story ;-)

My Question to you all is: What would be the best way to start? Should I try to start it first (with fresh Oil and a bucket full of Water for cooling - a friend of mine said that we should do that first) or would it be better to straight get it out and overhaul it before testing it in its current state?

Some pictures below, but as I guess you cant tell the health only with those pictures.

Looking forward for your feedback

Greetings from Germany!
Attached Images
   
Reply With Quote
  #2   IP: 47.142.133.29
Old 09-08-2021, 03:14 AM
JOHN COOKSON JOHN COOKSON is online now
Afourian MVP, Professor Emeritus
 
Join Date: Nov 2008
Posts: 3,464
Thanks: 50
Thanked 823 Times in 602 Posts
If the engine has been in an area where the temperature gets below freezing in the winter the first thing I would do is pressure test the block to be sure there is no freeze damage to the cooling system.

ex TRUE GRIT
Reply With Quote
  #3   IP: 165.225.20.153
Old 09-08-2021, 04:31 AM
Surcouf's Avatar
Surcouf Surcouf is offline
Afourian MVP, Professor Emeritus
 
Join Date: May 2018
Posts: 324
Thanks: 269
Thanked 134 Times in 103 Posts
hello,

I did a partial overhaul of mine during first Covid period, and since then moved back to Europe. I had limited experience with engine before, and did it alone; but without that forum, that would not have been possible. I strongly recommend keeping the A4

So my first reaction would be:
- is the shaft turning, or is the engine locked?
- perform the block pressure test, then the manifold pressure test.
- if shaft is turning, and block are not leaking, then yes, next step would be to change oil, drop a new battery, make sure nothing starts burning (be ready to disconnect battery, as you know nothing of the electrical system at this point), crank the block. Check for plugs spark
- then install a temp fuel line from a bucket and try to start. all that without water

If the engine cranks and does not leak, you should keep it, buy MM manual and perform full engine maintenance, including both pumps (fuel and water).

There is always a debate on running a water pump with a old dry impeller... it could break and send small pieces of impeller in the cooling system. Many (including me) would just use the old impeller for testing the engine, but others had bad experience chasing pieces of impellers in the cooling ... being VERY careful not to flood your engine (direct exhaust or riser?)you can also by-pass the pump with a water hose that you crank open once engine runs. I let the others chip in.

It is going to be a fun trip, good luck
__________________
Surcouf
A nostalgic PO - Previously "Almost There" - Catalina 27 (1979)
Reply With Quote
The Following User Says Thank You to Surcouf For This Useful Post:
TimBSmith (09-08-2021)
  #4   IP: 134.41.132.177
Old 09-08-2021, 01:33 PM
Mo's Avatar
Mo Mo is offline
Afourian MVP
 
Join Date: Jun 2007
Location: Halifax NS,
Posts: 4,426
Thanks: 230
Thanked 360 Times in 242 Posts
A look at the pictures shows that someone has been at the engine. Although it looks a bit messy I'd be willing to bet that the person that had it knew what every little thing there was for, where every wire went etc.

What I would do:
1 compression check
2 ignition check by turning it over and ensuring spark on all 4 cylinders.
3. remove carburetor and clean it up.
4. Hook up auxiliary fuel supply of fresh gas.
5 Check oil level and if down use 15w40 to top up
6 Turn it over on starter and see if it starts.
7 If it starts shut it off right away.
8 Hook up a water supply from a bucket to the intake pump.
9 Restart and see if it keeps running and spitting water out the back.
10 Check oil and see if any water in oil...foamy, white, bubbles on dipstick.

There are a number of things that could need work ranging from the ignition system, to pump, plugs,...if you need someone to help with the engine find a guy that is 60 or 70 years old that worked on engines...a farmer, boater, old mechanic...they know this stuff.

One of the guy said to check if it is turning over...very necessary. It has to be free and not seized.
__________________
Mo

"Odyssey"
1976 C&C 30 MKI

The pessimist complains about the wind.
The optimist expects it to change.
The realist adjusts the sails.
...Sir William Arthur Ward.
Reply With Quote
The Following User Says Thank You to Mo For This Useful Post:
TimBSmith (09-08-2021)
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
Video: A4 Overview After Overhaul captainmurph Overhaul 0 09-08-2020 12:04 PM
When to overhaul? ILikeRust Overhaul 11 03-15-2017 09:53 AM
First time overhaul of A4 Joslir Overhaul 7 01-14-2008 01:36 PM
First time overhaul of A4 Joslir Catalina 1 12-13-2007 03:57 AM
Replace it? Overhaul it? Overhaul it! Motor John Overhaul 0 08-15-2006 01:41 AM


All times are GMT -4. The time now is 03:33 PM.


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


Universalģ is a registered trademark of Westerbeke Corporation

Copyright © 2004-2021 Moyer Marine Inc.

All Rights Reserved