I have a '63 cad Series 62. I was wondering if these cars had anti-freeze over flow collection bottles? When I turn my car off anti-freeze runs out of the over flow hose. If not is it ok to put one in?
Dangerous to be opening the stock rad cap when the coolant is hot
coolant is 200 degrees or more so use a rag over the cap and be very careful not to get burned
my own solution is to purchase a Stant rad cap ( 15 1/2 lbs ) with a red pressure release in its top
on all my cars because at some point in time you will experience a need to release the pressure in the rad in many cases
my 64 429 coolant level is correct when you look inside the rad and the fluid is just covering the coils and you have about an inch of air space left
An overflow bottle is great to be recapturing any coolant overflow so it can be reused as needed
Retarded timing will cause an engine to be running hotter than it SB
Timing retards as points wear so keep up your tune up maintenance per the Service Manual
These cars were not originally designed to run with an absolutely full radiator. Some expansion room is needed, or when the engine is stopped, it will relieve itself of being “too full” by releasing some of the hot fluid. After this happens, if you drive it a few more times without topping off the radiator (provided you do not have a condition causing overheating, i.e.: excessively lean fuel:air carb mixture, etc.), the extra coolant loss should stop, and the car should operate in the normal temperature range. After the engine is completely cool (radiator not too warm to rest your hand on the top tank), if you remove the radiator cap slowly, you should still see coolant in the radiator (not exposed radiator coils).
Old radiator coolant will not exchange heat as it was designed to
It looses it ability to do that over time and SB changed when due ( maintenance )
What is your temp gauge reading at operating temp ? ( which I asked before )
It SB just past the first quarter mark on the gauge when correct which is about 180 degrees
The half way point on the gauge is 200 degrees and hotter than your temp SB
Do examine the the seal surface of the rad cap to the rad
Spec for the cap is 13 1/2 to 16 1/2 lbs so you're good there. I would think that the seals are a standard size. Check the radiator filler neck for imperfections. Does the car run hot?
Would a wrong radiator cap cause this problem? The one I have is rated at 16# and I did put a new one on last summer with the same results. I'm wondering if the cap seal is not the right size.
The car did not come with an overflow collection bottle in these years
I do have an overflow bottle I put in my 64
If your cooling system is overflowing when you shut the car off you are having an issue with the cars cooling system running to hot that you should look into
Where does your car run on the dash temp gauge ?
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