thermostat, which one? - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 11-17-2010, 07:37 PM
Registered User
 
Join Date: Dec 2009
Location: Wisconsin
Posts: 95
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thermostat, which one?

Whats a good thermostat to run on a high performance street/strip motor? The car will mostly see public roads and once in a while run down the drag strip

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 11-17-2010, 09:37 PM
Registered User
 
Last photo:
Join Date: Mar 2009
Location: Burton, MI
Posts: 794
Wiki Edits: 0

Thanks: 38
Thanked 15 Times in 14 Posts
generally speaking.. always 190 with a carb'd engine.

220 is better, but it requires computer control of the fuel and timing to stay out of detonation.
the hotter the engine, the more efficient the combustion is.. but also the easier it is to get into spark knock... running a cold thermostat is basically just a band-aid for a poor tune..
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 11-17-2010, 09:45 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,934
Wiki Edits: 326

Thanks: 759
Thanked 1,008 Times in 847 Posts
agree with kc8oye....
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 11-18-2010, 04:50 PM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,673
Wiki Edits: 0

Thanks: 13
Thanked 49 Times in 49 Posts
I run a 180 degree in my 350 and it works great. I don't like to get it up to 200, just my opinion.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 11-18-2010, 08:19 PM
Registered User
 
Join Date: Jul 2006
Location: ohio
Posts: 21
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Should you always run a thermostat on the street even when running a hi horse power engine. Do you feel that it will run cooler with or with out a thermostat when street driving
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 11-18-2010, 09:41 PM
Registered User
 
Last photo:
Join Date: Mar 2009
Location: Burton, MI
Posts: 794
Wiki Edits: 0

Thanks: 38
Thanked 15 Times in 14 Posts
it will almost always overheat w/o a t-stat. part of what the t-stat does is provide a restriction to force the water to stay in the radiator long enough to actually be cooled.

a 180 for a carb'd engine is a good choice. w/o computer control it can be difficult to make an engine run near 220F w/o spark knock and other issues.

if you notice, most new cars don't have numbers on their temp gauge.. the dealers where having problems with people coming back and complaining that their cars were running "Too hot" because of the new breed of engines running at 220 or higher.. so they took the numbers off the gauge.. so you just have "cold" and one end.. "over heating" at the other.. and "normal" in the middle..

I have a 160 in my car right now because I was having problems with it spark knocking until I discovered my compression was quite a bit higher then I thought it was.. started running premium fuel and it doesn't knock any more
i _thought_ my c/r was near 9.0:1.. it's closer to 10:1
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 11-18-2010, 09:47 PM
Registered User
 
Last photo:
Join Date: Mar 2009
Location: Burton, MI
Posts: 794
Wiki Edits: 0

Thanks: 38
Thanked 15 Times in 14 Posts
Quote:
Originally Posted by techinspector1
agree with kc8oye....
Holy Crap!!!!
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 11-19-2010, 03:11 PM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,673
Wiki Edits: 0

Thanks: 13
Thanked 49 Times in 49 Posts
Quote:
Originally Posted by dave377
Should you always run a thermostat on the street even when running a hi horse power engine. Do you feel that it will run cooler with or with out a thermostat when street driving
You don't want the engine to run cold. It should be at a temp of at least 160 min up to 220 max. Without a thermostat it will take forever to warm up, but once it does it will overheat.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 11-19-2010, 03:17 PM
eloc431962's Avatar
Evil Wicked Mean And Nasty
 
Last wiki edit: Pilot bearing and bushings
Last journal entry: roof repair
Last photo:
Join Date: Nov 2008
Location: back in the garage.
Posts: 13,762
Wiki Edits: 37

Thanks: 50
Thanked 28 Times in 24 Posts
Quote:
Originally Posted by dave377
Should you always run a thermostat on the street even when running a hi horse power engine. Do you feel that it will run cooler with or with out a thermostat when street driving
Alway's run a thermostat they are ther for a reason. I have run without in the past with no problems. But that's just not alway's the case. Back then i was young dumb and full of . But now i always run one.JMO



Cole
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 11-19-2010, 04:07 PM
Registered User
 
Join Date: Sep 2010
Location: Virginia
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Also consider a balanced thermostat. The Mr. Gasket unit I just installed seems to be keeping my 350 right at 180 where the old one woundered all over.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 11-19-2010, 04:36 PM
Deuce's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Choosing a trailer
Last journal entry: Jan 13 2013
Last photo:
Join Date: Aug 2002
Location: Deuceland USA
Age: 66
Posts: 5,657
Wiki Edits: 6

Thanks: 0
Thanked 9 Times in 9 Posts
I run either a 180 or a 195 ... in my 32's. The roadster has a 180 and the 3W has a 195. The 3W has a heater ( Vintage Air ) and I like the extra 15 degrees coming out of the heater ducts. I have read a good bit on this subject and most experts say that you need to run at least a 180. Anything less ... and the oil does not lubricate as well and the moisture and condensation does not get burned off. When I winterize my 32 roadster ... I will change the thermostat to 195 in it also. I had one in it before ... but when I changed the coolant a few years ago ... all I had new ... ready to install was a 180 thermostat .

I have a few friends who work at the race shops in Charlotte NC ... and the NASCAR guys say that their motors make better power and gets better fuel mileage at 210/220
__________________


"I won't be wronged . I won't be insulted, and I won't be laid a hand on. "






Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 11-19-2010, 07:17 PM
Irelands child's Avatar
Registered User
 
Last wiki edit: Ford engine specifications Last photo:
Join Date: Jan 2005
Location: Upstate New York
Posts: 4,913
Wiki Edits: 8

Thanks: 14
Thanked 205 Times in 186 Posts
Quote:
Originally Posted by Deuce

I have a few friends who work at the race shops in Charlotte NC ... and the NASCAR guys say that their motors make better power and gets better fuel mileage at 210/220
There is one caveat to that - the radiator cap for a NA$CAR race car is 29-31 psig which will raise the boiling point of the water to something close to 300*F rather then 212 at atmospheric pressure (a 15 pound cap is in the 250*F range).

Dave W
__________________
Irelands child
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 11-19-2010, 09:07 PM
Registered User
 
Last photo:
Join Date: Mar 2009
Location: Burton, MI
Posts: 794
Wiki Edits: 0

Thanks: 38
Thanked 15 Times in 14 Posts
yeah. power is all about efficiency. I forgot the exact numbers, but somewhere around 70% of the energy released in the combustion of fuel is wasted as heat, be it out the tailpipes or the water jacket.. that means only 30% of the fuel is actually going towards pushing the piston down. so the less heat you can waste, the more power the engine can make.. and so the better the emissions...
(imagine if we could find a metal with the durability of cast iron, and the insulation properties of a ceramic?)

the hotter the engine runs, the more efficient the combustion process becomes, (Basically because the hotter the block the less the heat wants to transfer) however, as mentioned above, there are limits to what can happen. if you get too hot, spark knock is the biggest problem.. then you can get into detonation and that's really ugly for your engine.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 11-20-2010, 11:07 AM
Registered User
 
Join Date: Jul 2006
Location: ohio
Posts: 21
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I agree with what every one is saying. I wanted to throw that Question out there about to use a thermostat or not. I have seen a lot of different ideals on it and always thought that you should run one so the water has time to cool in the rad. How ever I never used one in my drag only car but I did run a restrictor its place.


Thanks for the info

Last edited by dave377; 11-20-2010 at 11:18 AM.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
thermostat question mitmaks Electrical 4 10-17-2010 02:12 PM
How Does A Thermostat Work? cobalt327 Hotrodding Basics 16 03-16-2010 06:32 AM
Drill 1/8 hole in thermostat fat40 Engine 4 02-06-2006 01:53 PM
Whats the correct temperature my 350 should be running at? batman09 Engine 101 10-23-2005 12:29 PM
thermostat crshrmn3 Engine 7 10-01-2003 06:27 PM


All times are GMT -6. The time now is 04:55 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.