overheating problem

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Feb 2, 2016 | 03:22 PM

#21

Tampa Jerry

Le Mans Master

Joined: Aug 2005

Posts: 6,541

Likes: 1,975

From: Temple Terrace Florida

Overheating

Do a search over on the C-2 section of this forum and look for a technical paper authored by John Z. It will tell you everything you need to know about an overheating engine. Rather then guessing and changing out parts, follow the text. This is not new ground. Good luck. Jerry

Feb 2, 2016 | 04:24 PM

#22

blue by you

Burning Brakes

Joined: Dec 2005

Posts: 1,179

Likes: 100

From: cranford nj

is the belt tight and turning the pump like it should

Feb 2, 2016 | 11:14 PM

#23

fishslayer143

Drifting

Joined: Aug 2009

Posts: 1,346

Likes: 160

From: new iberia la

Quote:

Originally Posted by bashcraft

Tell that to all the people who put a shut off valve in one of their heater hoses.

Correct... They came with vacuum shut-off OEM... it never caused overheating.. I ve had a manual shut-off for years, BIG CAM.. not enough vacuum to close OEM valve.. has never run hot even in 110* heat with A/C on in traffic.

Feb 3, 2016 | 03:34 PM

#24

bschuus

Instructor

Joined: Dec 2011

Posts: 197

Likes: 27

From: New Jersey

Is the radiator cap new? Is more important than you think. If its not holding pressure it can run hot

Last edited by bschuus; Feb 3, 2016 at 03:36 PM.

Feb 5, 2016 | 04:38 PM

#25

Rally68

Burning Brakes

Joined: Sep 2008

Posts: 805

Likes: 5

From: Naperville Illinois

Sorry if I missed this--I did try to read the thread carefully--but you are verifying your block temp with a good quality laser thermometer, correct? My temp gauge is accurate up to about 160 deg, then reads progressively too high--210 deg on the gauge is 185 deg at the t-stat housing, 230 on the gauge (the hash mark between 210 and 250) is 200 at the t-stat.

Just a thought.

Feb 6, 2016 | 11:06 PM

#26

C3 4ME

Le Mans Master

Joined: Oct 2005

Posts: 6,247

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From: Glen Allen, VA

My Corvette had an air pocket in the cooling system once after refiling from a repair. The temp gauge shot straight up way faster than normal. What was suggested was to jack the right front of the car up when filling the coolant from empty, so the radiator cap is the highest point in the cooling system, to prevent an air bubble.

Feb 8, 2016 | 01:11 AM

#27

centuryoldracer

Le Mans Master

Joined: Apr 2015

Posts: 9,432

Likes: 124

Quote:

Originally Posted by C3 4ME

Pull the heater hose off the intake manifold, then fill the radiator until coolant starts to come out of the hose barb on the manifold to get all the air out. Then put the hose back on.