Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- 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> Cooling Issues
User Name
lost password?   |   register now

Thread: Cooling Issues Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
03-21-2003 03:39 PM
trees I guess we will be saying almost the same thing, but the main point is heat transfer. The most important heat transfer occurs in the motor, not the rad. You want the water flow slow enough to let the engine heat transfer to the water, The rad is much more efficient than the water jackets so the thermostat slows the water down enough to let the transfer take place in the motor. Cool water temp, which you will see most of the time with out a thermostat, does not mean a cool motor. In fact, if you run an oil temp guage, it will make you a believer!!! Thus, I would be very suspecious of this motor!!


03-21-2003 03:04 PM
milner i fully agree with everyone that says you need a stat. you need to slow the flow of coolant, to allow it to cool. steve b said it about as good as it can be said. when i raced stock car, we took out the stat, in case it stuck shut and over heated. but we all ran restrictor plates in place of them.
03-21-2003 04:30 AM
M&M CUSTOM Like a beer in the fridge, the longer it's in the radiator the cooler it CAN become (effeciency).
If it wasn't meant to be in there they wouldn't make 'em, and the manufacturers wouldn't put 'em in there either.
03-20-2003 10:47 AM
Steve B An engine without a thermostat will not neccessarily run at the same temp as with one when the engine is warmed up. As stated by andybird, without a 'stat, the engine will take longer to reach operating temp, but can run cooler or even hotter depending on the efficiency of the radiator. The thermostat even when fully open is an engineered restriction that does slow the flow of coolant down to allow it to reside longer in the radiator, allowing it to cool better.

Idealy, an engine with a 190 degree thermostat should run at 190 degrees as the thermostat cycles open and more closed. An engine without that thermostat may never reach 190 degrees if the radiator is efficient. It may even run hotter if the coolant can't stay in the radiator long enough. A high perf motor that wants to run hot will run where it wants to even with the thermostat wide open- no matter if its a 160 degree or 195 degree 'stat.

I think we agree however that thermostats should always be used
03-20-2003 09:47 AM
andybird eh? that's not quite right DoubleVision (sorry), what you've said is almost the direct oposite of the real reason for running one...

A thermostat blocks the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine (although there is coolant in the engine obviously). Once the engine reaches its operating temperature (generally about 160 - 200 degrees F), the thermostat opens. (Allowing coolant to flow and thereby cooling the engine)

By letting the engine warm up as quickly as possible, the thermostat reduces engine wear, deposits and emissions.

By not having a thermostat your engine takes longer to heat up, but once it has reached operating temperature, a car without a thermostat runs the same as one with.

I would always run a thermostat personally...

[ March 20, 2003: Message edited by: andybird ]</p>
03-20-2003 08:07 AM
DoubleVision I know many that still do this, and I don`t recommend it, it doesn`t allow the coolant to stay in the radiator long enough to cool.
03-20-2003 06:57 AM
Cooling Issues

Has anyone ever headr of running a motor strictly for street use withiut the themostat when I bought the motor from the guy I went through and added some things and freshened uop before dropping it in when I noticed ther was no thermostat I was going to put one in but my buddy also says he doesn't run one in his????? (never heard of it)

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

All times are GMT -6. The time now is 05:18 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.