Re: Change of radiator core affecting cooling performance in 1949, 23rd series

Posted by Joe D'Agostino On 2017/7/9 11:18:10
That is a good point. Obviously, we don't want to remove the thermostat since there are many other benefits to having the controlled block temperature that the thermostat affords (like removing oil impurities and such)

Most of us as kids have experimented with pulling out the thermostat and found better cooling as a result.
I have never tried to see if there is a difference in cooling at idle vs cruising without the thermostat. There may be.

In my case, I am talking about a radiator that is now thicker than the original thinner one and trying to determine why my cooling at low rpm's is affected so negatively. I have a large spread between cooling at cruising speeds and idle. As I mentioned above, I had the problem even on a 35 degree morning.

Obviously, we can build shrouds or add auxiliary fans but as restorers of these great cars, I think we want to get them back to original without patches if possible.

It is hard for me to think that when the car was new in 1949, the owners needed to deal with a thermal runaway situation at idle (especially in Pennsylvania where I live). Since I have had the engine rebuilt and changed all of the cooling components, there is not much left but the radiator and the fluid flow rate analysis to try to get it back to original performance. (And Ernie's suggestion about the vacuum advance)

In any case, I still need the dimensions and specs for the original 419500 core. If anyone can get them, please let me know

This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=193762