Return to the home page...

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

Reply
 
Thread Tools Display Modes
  #1   IP: 204.60.184.1
Old 04-01-2019, 01:58 PM
gravy26 gravy26 is offline
Senior Member
 
Join Date: Jul 2008
Location: Bethlehem, Ct.
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Late model thermostat housing elbow

During a head gasket replacement when I pulled off the thermostat housing I found the input side elbow has only a small hole - see attabelow - is this correct?
Attached Images
  
Reply With Quote
  #2   IP: 32.211.28.40
Old 04-01-2019, 04:48 PM
Al Schober's Avatar
Al Schober Al Schober is offline
Afourian MVP
 
Join Date: Jul 2009
Location: Uncasville, CT
Posts: 1,423
Thanks: 9
Thanked 170 Times in 148 Posts
That's a restrictor. A lot of owners use that (or a valve) to reduce/control the flow in the engine bypass. It forces more water to take the path through the block. Some owners (myself included) like to run their engines on the cool side (120 or 130F), and will a) use a restrictor, and/or b) use no thermostat.
Reply With Quote
The Following User Says Thank You to Al Schober For This Useful Post:
Administrator (04-02-2019)
  #3   IP: 71.208.55.235
Old 04-01-2019, 05:46 PM
romantic comedy's Avatar
romantic comedy romantic comedy is offline
Afourian MVP
 
Join Date: May 2007
Location: florida
Posts: 1,825
Thanks: 4
Thanked 77 Times in 63 Posts
As Al said, it is an added restriction. I think there was a bulletin about that. It gave instructions on how to make that small orifice to restrict the flow thus sending more water thru the block for more cooling.

I like the idea of a valve at that point.

I run a late model thermostat with FWC (home made). It runs all day at 180. I have a valve in case it wants to run hot.
Reply With Quote
The Following User Says Thank You to romantic comedy For This Useful Post:
Administrator (04-02-2019)
  #4   IP: 204.60.184.147
Old 04-02-2019, 10:40 AM
gravy26 gravy26 is offline
Senior Member
 
Join Date: Jul 2008
Location: Bethlehem, Ct.
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks, that's what I was thinking.
The engine at idle stays around 140 but after 30 mins of motoring along it will creep up to 160.

I guess I'll leave it in place.

Mike M.
Reply With Quote
  #5   IP: 24.121.135.15
Old 04-03-2019, 11:00 PM
rickandlee rickandlee is offline
Senior Member
 
Join Date: Nov 2016
Location: Lake Havasu city AZ
Posts: 46
Thanks: 1
Thanked 8 Times in 7 Posts
Always clean your cutting board well after poultry and thermostats.

I've been running no thermostat and a bypass valve (fully open) for this winter and my temps never got above 100° on the gauge. A few extra dollars appeared in the boat bank account a little while back so decided to try a Moyer thermostat and new housing. The temps come right up to 160° and stay there no matter the power setting. Objectively through carefully observation the fuel mileage increased 11%. I will not live long enough for this increase in mileage to pay for the thermostat but subjectively I think the engine runs smoother at that temp. Thanks Moyer for the fine work on the thermostat.
Reply With Quote
The Following User Says Thank You to rickandlee For This Useful Post:
Administrator (04-04-2019)
  #6   IP: 72.205.64.56
Old 04-04-2019, 01:58 AM
JOHN COOKSON JOHN COOKSON is online now
Afourian MVP
 
Join Date: Nov 2008
Posts: 3,014
Thanks: 35
Thanked 496 Times in 382 Posts
Quote:
Originally Posted by gravy26 View Post
The engine at idle stays around 140 but after 30 mins of motoring along it will creep up to 160.
I guess I'll leave it in place.
Mike M.
How long has it been since you've done an acid flush?
A bit of reserve cooling capacity is good to have.

TRUE GRIT
Reply With Quote
  #7   IP: 72.69.36.126
Old 04-04-2019, 07:27 AM
tenders tenders is offline
Afourian MVP
 
Join Date: May 2007
Location: Harlem YC, City Island, NY
Posts: 1,294
Thanks: 26
Thanked 159 Times in 104 Posts
My version of this is a bolt stuffed into the hose at the tee. Some water sneaks around the hex head. Temps are always low, salt water precipitate is a non-issue, any high temperature is an immediate indication that something unusual is going on, and you are welcome to your 11% mileage improvement at 160 degrees.
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
Early and late model distributor mounting options Marian Claire Ignition System 2 03-28-2012 10:21 AM
Late model thermostat High Hopes For Sale - Engines and Engine Parts 0 03-01-2012 11:16 PM
Thermostat installation instructions ( with spacer kit and original housing ) seapadrik Cooling System 11 07-06-2011 02:35 PM
Thermostat Housing Roof Too Low??? Dana Paterson Cooling System 0 09-27-2007 10:32 PM
New Products From Moyer Marine Don Moyer Cooling System 0 10-05-2005 02:03 PM


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


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2019 Moyer Marine Inc.

All Rights Reserved