Underhood oil gauge? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 12-12-2003, 08:07 AM
engineczar's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Sep 2002
Location: In Flowbench nirvana
Age: 52
Posts: 1,686
Wiki Edits: 0

Thanks: 6
Thanked 59 Times in 54 Posts
Nice edit 4 Jaw. lmao

    Advertisement
__________________
BSE Racing Engines
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 12-14-2003, 09:25 PM
Member
 
Last photo:
Join Date: May 2003
Location: Shreveport LA
Age: 65
Posts: 5,103
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Re: Liquid Filled Gauges

[QUOTE]Originally posted by Tech @ BG
[. The hotter the gauge gets under the hood the thinner the glycerin gets, giving you a "false" low pressure reading.

Temperature of the gauge liquid should have no effect on the gauge reading, except for its effect on the actual oil pressure.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 12-14-2003, 09:41 PM
Jag Daddy's Avatar
British Style with USA Muscle
 
Last photo:
Join Date: Mar 2003
Location: Valencia, California
Age: 57
Posts: 1,078
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
Quote:
The hotter the gauge gets under the hood the thinner the glycerin gets, giving you a "false" low pressure reading.
But as liquid heats it expands, some liquids expand faster than others. So I think if anything it would be slightly higher not lower

Regards
Mark
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 12-14-2003, 09:59 PM
camaroman7d's Avatar
Member
 
Last photo:
Join Date: Dec 2003
Location: Vacaville, California
Age: 47
Posts: 2,245
Wiki Edits: 0

Thanks: 3
Thanked 9 Times in 9 Posts
The liquid in the gauge should not have an effect on the reading. That liquid is there to keep the neddle steady, no bouncing or vibrating etc... I have a few liquid filled gauges on my car and I haven't noticed any difference due to tempature.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 12-15-2003, 08:33 AM
Technical Support Barry Grant
 
Last photo:
Join Date: Jul 2003
Location: Dahlonega, GA
Posts: 1,503
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Not all liquids expand as they get hotter. Glycerin gets thinner which reduces the pressure on the internal mechanism of the gauge giving a false low reading. We see this on a regular basis with people using them under the hood on fuel pressure systems.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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



All times are GMT -6. The time now is 08:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.