Go Back  Offshoreonly.com > Technical > General Q & A
How does this oil thermostat work? >

How does this oil thermostat work?

Notices

How does this oil thermostat work?

Old 03-10-2023, 04:55 PM
  #1  
Registered
Thread Starter
 
Join Date: Jan 2022
Location: West Michigan
Posts: 534
Received 144 Likes on 84 Posts
Default How does this oil thermostat work?

Just received my oil thermostat's and was thinking that when I held it in my hand I would see how it works. Not the case. The illustration online is pretty much how it looks in person. I don't understand (F-2, big surprise I know) how the path of least resistance is not straight through this thermostat whether the oil is cold or hot? Instead, it says that the oil will make 2 - 90 degree turns for approx. 90% of the oil flow during warm up and then go straight through after it warms up enough to close the thermostat then the flow is straight through. I'm not sure what kind of magic is going on here so I thought I would ask you guys. Just to make sure I'm installing correctly, I plan on plumbing from the engine, to the filter block, to this thermostat (from source) from this thermostat (to source) to the engine. The other 2 of course are the external cooler. Thanks for your help.


PQ290Enticer is offline  
Old 03-10-2023, 06:44 PM
  #2  
Were doomed!
Charter Member
iTrader: (1)
 
Wally's Avatar
 
Join Date: Oct 2000
Location: Chicago, IL
Posts: 6,628
Received 880 Likes on 443 Posts
Default

Path of least resistance mean just that. When the oil is cold its thicker....so its harder for the engines oil pump to push it through the lines....if the bypass is open, the oil will take that bypass route as its a shorter route...it still does move a little bit of oil through the coolers no matter what. Then when the oil heats up the bypass will close off and 100% of the oil gets pushed through the coolers. Very simple design....and its nice because if the bypass was to ever fail it wont completely block off the oil flow.
__________________
-Wally

Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
Wally is offline  
Old 03-10-2023, 07:14 PM
  #3  
Registered
Thread Starter
 
Join Date: Jan 2022
Location: West Michigan
Posts: 534
Received 144 Likes on 84 Posts
Default

Wally, I'm holding the thermostat and looking straight through it. How is that not the path of least resistance? Still don't understand how it makes a hard turn twice over straight through. Again, no surprise that I don't get it. I'm sure it works fine. Thanks for your comment.
PQ290Enticer is offline  
Old 03-10-2023, 07:32 PM
  #4  
Registered
 
Join Date: Jan 2007
Location: Murrayville Georgia
Posts: 1,799
Likes: 0
Received 860 Likes on 311 Posts
Default

the cooler is the higher resistance so when open it is easier to make the turn and go back vs thru the tubes of the cooler.
compedgemarine is offline  
Old 03-10-2023, 07:37 PM
  #5  
Platinum Member
Platinum Member
iTrader: (6)
 
F-2 Speedy's Avatar
 
Join Date: May 2012
Location: Midwest & T-Rock
Posts: 10,380
Received 3,005 Likes on 1,340 Posts
Default

you have to think of it as the lines are full of cold oil the bypass opens and returning most of the oil to where it came from then oil heats up and the bypass closes with free flow straight through
F-2 Speedy is offline  
Old 03-10-2023, 08:06 PM
  #6  
Registered
Thread Starter
 
Join Date: Jan 2022
Location: West Michigan
Posts: 534
Received 144 Likes on 84 Posts
Default

Now I get it. I didn't know the cooler was that restrictive. Thanks guys.
PQ290Enticer is offline  
Old 03-11-2023, 09:23 PM
  #7  
Registered
 
Join Date: Mar 2020
Posts: 333
Received 169 Likes on 104 Posts
Default

Originally Posted by PQ290Enticer
Now I get it. I didn't know the cooler was that restrictive. Thanks guys.
It's not that the cooler is so restrictive. It's the cold oil that's in it that doesn't flow so easily. So it takes the easiest path back until the oil is warmed up and can flow thru the cooler easily.
Smitty275 is offline  
The following users liked this post:
PQ290Enticer (03-12-2023)

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.