Question about 1965 Ford Mustang
Hi, the engine gets very hot at highway speed. At idle and cruising at 40 mph the temp is normal. The water pump is new, lower hose has spring in it and heads are rebuilt. the thermostat is 160 degree with a 16LB cap. Also checked that the head gasket was installed correctly (front label faces to front of engine. Any idea? I also noticed that the head gasket covers one of the water jacket ports in front of engine and the other port has only 1/8" hole in the gasket. The gaskets are correct for engine but why block one port and restrict another? Any suggestions. Thank you.
A partially blocked radiator will also cause htis symptom. Had this happen on two cars in the past. Take radiator to shop for rodding out and cleaning.
Posted on Apr 22, 2009
If you have the head gaskets installed with front stamp toward the front this is correct. Cooling passages in the cylinder-head gasket must always go at the rear of the block to ensure proper cooling. This allows coolant to circulate completely through the block and heads on its way to the thermostat and radiator.
Usually if it overheats above 40 mph this idicates that exhaust gases are getting into the coolant either from a cracked or warped head. I would have a combustion leak test done. A combustion leak test is designed to check for the presence of combustion gases in the engine coolant. It should be performed when signs (overheating, bubbles in the coolant, rise in coolant level upon starting) point to a blown head gasket, cracked block, or cracked cylinder head. A block tester, often called a combustion leak tester, is placed in the radiator filler neck. The engine is started and the test bulb is squeezed and then released. This will pull air from the radiator through the test fluid. The fluid in the block tester is normally blue. The chemicals in the exhaust gases cause a reaction in the test fluid, changing its color. A combustion leak will turn the fluid yellow. If the fluid remains blue, there is no combustion leak.
Posted on Apr 16, 2009
Your raidator fins my be clogged and also you shouldnt have a clutch fan on it it should be a locked fan!!!! for more air flow!!!
Posted on Apr 16, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 15, 2015 | 1965 Ford Mustang
Apr 13, 2015 | Mercury Cars & Trucks
Oct 30, 2013 | Ford Mustang Cars & Trucks
Sep 26, 2011 | 1965 Ford Mustang
Apr 17, 2011 | 1965 Ford Mustang
Sep 14, 2010 | 1987 Ford Mustang
Oct 21, 2009 | 1966 Ford Mustang
Sep 12, 2009 | 1965 Ford Mustang
Dec 19, 2008 | 1965 Ford Mustang
Jun 03, 2017 | 1965 Ford Mustang
776 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: