Still Overheating? - 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
  #1 (permalink)  
Old 10-14-2003, 03:26 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Still Overheating?

ok i got a 77 cadillac coupe deville i took out the big 425 motor with a 350 olds. i just put in new radiater but it still overheats from the overflow tank it gets hot and it be steaming and boiling from the overflow tank? what could it be? do i need a new thermostat or maybe a water pump

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-14-2003, 03:36 PM
gt2betubbed's Avatar
Kid With A Wrench...
 

Last journal entry: The Blower and test fit.
Last photo:
Join Date: May 2003
Location: Cali Baby!
Age: 35
Posts: 1,106
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Overheating is caused usually by low air flow. Are you running a fan of some sort, and is there a shroud around the fan? Also, what temp stat are you running? And, how old is the pump you are running?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-14-2003, 03:42 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
yeah the fan is ran off the motor and yes there is a shroud around it, i bought the motor from a salvageyard so still the original water pump i guess? and really dont know the temp
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-14-2003, 03:49 PM
Wrencher's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: cincinnati
Age: 56
Posts: 607
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
try changing the thermostat
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-14-2003, 03:50 PM
Tazz
 
Last photo:
Join Date: Jun 2001
Location: amherst,ohio
Age: 66
Posts: 2,049
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
overheating Caddy

Air flow is important like the dude said. You gotta run a fan shroud and have a good thermostat. And the fan is important too, more blades the better, or the fan may have a thermal clutch too, may not be engaging. What kind of temp are you running? Add a gage to see if there is really a problem or maybe your tank is to small. The overflow tank is there to catch the water as the engine heats up then cool down after you shut it off instead of belching it out on the ground. And like the dude said, how old is the water pump?




Todd




Rat Rods Rule!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-14-2003, 03:53 PM
dmorris1200's Avatar
doesn't play well with others
 
Last photo:
Join Date: Feb 2002
Location: Maine
Age: 49
Posts: 1,834
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Did this problem start after just changing the radiator or did you swap the engine and radiator together and then have this problem?


__________________
BUILT FORD TOUGH
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 10-14-2003, 04:03 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally posted by dmorris1200
Did this problem start after just changing the radiator or did you swap the engine and radiator together and then have this problem?


well when i had the old radiater in it would be steaming from the side i think there was a leak some where so i was going to get the water pump thermostat or the radiater so i got the radiater first then all that stuff from the overflow tank happend i would let it run for like 10 minutes or so and get hot

Quote:
Originally posted by Wrencher
try changing the thermostat
should i go with a 180 unit?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 10-14-2003, 04:08 PM
dmorris1200's Avatar
doesn't play well with others
 
Last photo:
Join Date: Feb 2002
Location: Maine
Age: 49
Posts: 1,834
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I would definately suggest getting a temp gauge installed. It sounds like you're saying this problem has been happening since swapping engines. Are your belts routed correctly so that your water pump isn't rotating backwards? Did you properly purge the air out of the system? Did you check for good coolant flow? If you are not sure if everything is set up correctly since the swap you could try removing the t-stat and run it without a t-stat just to confirm good flow and direction of coolant flow.


__________________
BUILT FORD TOUGH
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 10-14-2003, 04:10 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
whats a t-stat?
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 10-14-2003, 04:12 PM
dmorris1200's Avatar
doesn't play well with others
 
Last photo:
Join Date: Feb 2002
Location: Maine
Age: 49
Posts: 1,834
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally posted by LOW CADILLAC
whats a t-stat?
Lazy mans way of typing thermostat.



__________________
BUILT FORD TOUGH
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 10-14-2003, 04:15 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
oh ok lol so i just take it out and let it run for a while and pinch the hose to see if its flowing
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 10-14-2003, 04:22 PM
dmorris1200's Avatar
doesn't play well with others
 
Last photo:
Join Date: Feb 2002
Location: Maine
Age: 49
Posts: 1,834
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You check for flow by running it without the radiator cap installed and watching to see if you get good flow through the radiators cores. If not done carefully and correctly it could result in damage to your car and burns to you. If you are that new at this I would suggest finding a helper that can give you a hand guiding you through everything. I will say though most people are well schooled in the basic fundamentals of diagnosing a cooling system before doing major drivetrain modifications. Any pictures of this project? You can post on this site for free.


__________________
BUILT FORD TOUGH
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 10-14-2003, 04:26 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
heres 1
Attached Thumbnails
Click image for larger version

Name:	img_0044.jpg
Views:	74
Size:	36.8 KB
ID:	356  
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 10-14-2003, 04:28 PM
New Member
 
Last photo:
Join Date: Oct 2003
Location: GEORGIA
Age: 32
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
2
Attached Thumbnails
Click image for larger version

Name:	img_0046.jpg
Views:	55
Size:	42.2 KB
ID:	357  
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 10-14-2003, 04:38 PM
gt2betubbed's Avatar
Kid With A Wrench...
 

Last journal entry: The Blower and test fit.
Last photo:
Join Date: May 2003
Location: Cali Baby!
Age: 35
Posts: 1,106
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
clean looking caddy, just need to lower it so it matches your name....lol

I think your t-stat is opening up, since you're overflowing on the radiator, but it's a cheap and easy fix, and would give you a piece of mind. I would change the pump definately. You don't know how long it's been sitting or what it looks like internally. They aren't too expensive either. Did you flush the motor before doing putting it in? I would flush the motor, change out the t-stat and pump and go from there. AND DEFINATELY GET A TEMP GAUGE! Letting the motor boil over like that can cause a lot of damage, so be very careful.
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:
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



All times are GMT -6. The time now is 06:26 PM.


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.