Radiator recommendation

[Geoff 2]

[1] The hole in the stat are for race w/pumps that do not have a pressure bypass. The std pump has a bypass. Adding holes will just delay engine warm up time...& does nothing to aid cooling.
[2] The benefit of the alum rad over copper/brass is the larger tubes, 1" & larger that can be used with alum. This, in turn, allows for superior fin design & better cooling. The fins are what dissipate the heat....

 

[Mopar Hunter]

[1] The hole in the stat are for race w/pumps that do not have a pressure bypass. The std pump has a bypass. Adding holes will just delay engine warm up time...& does nothing to aid cooling.
[2] The benefit of the alum rad over copper/brass is the larger tubes, 1" & larger that can be used with alum. This, in turn, allows for superior fin design & better cooling. The fins are what dissipate the heat....

Fixed it.

Having a hole in the thermostat helps burp the system.

 

[Geoff 2]

The stat is not airtight. Some have a burp slot/hole, others, the air gets past through gaps. No need for an extra hole.

 

[RJRENTON]

I do.

Drilling a small hole in the tstat does absolutely nothing. Any intrained or trapped air will be eliminated the first time the thermostat opens. The exception is if you like to create work for no reason plus a 1/8" diameter hole compared to the open tstat area is meaningless......# 6 on the list of "old wives tales"..........
BOB RENTON

 

[mopar951]

Drilling a small hole in the tstat does absolutely nothing. Any intrained or trapped air will be eliminated the first time the thermostat opens. The exception is if you like to create work for no reason plus a 1/8" diameter hole compared to the open tstat area is meaningless......# 6 on the list of "old wives tales"..........
BOB RENTON

Ok definitely won’t be doing that!!!

 

[T2R9]

Drilling a small hole in the tstat does absolutely nothing. Any intrained or trapped air will be eliminated the first time the thermostat opens. The exception is if you like to create work for no reason plus a 1/8" diameter hole compared to the open tstat area is meaningless......# 6 on the list of "old wives tales"..........
BOB RENTON

Well it allows the engine to burp air when filling the cooling system when cold. Otherwise you have air pockets until the thermostat opens. I will add the hole or use a thermostat with a bleed valve. I want my cooling system full and without air pockets when I fire it for the first time for break in.

 

[RJRENTON]

Well it allows the engine to burp air when filling the cooling system when cold. Otherwise you have air pockets until the thermostat opens. I will add the hole or use a thermostat with a bleed valve. I want my cooling system full and without air pockets when I fire it for the first time for break in.

Refer to old wives tale #6.......
BOB RENTON

 

[T2R9]

Refer to old wives tale #6.......
BOB RENTON

 

[mopar951]

Quick question guys just to determine it’s the rad could I just run it without the vacuum advance hooked up to see if it runs hot?

 

[Scott Engelhardt]

have you put a new thermostat in this? Have you tried flushing the system? When you put a new thermostat in make sure you test it before you install. Have you cleaned the fins on the radiator? Make sure air can flow freely through the radiator.

 

[68-500]

Quick question guys just to determine it’s the rad could I just run it without the vacuum advance hooked up to see if it runs hot?

That would might aid it in overheating. Vacuum advance will help it idle cooler. Under load its hard to sat what the effect might be. Id advise leave it hooked up.

 

[mopar951]

have you put a new thermostat in this? Have you tried flushing the system? When you put a new thermostat in make sure you test it before you install. Have you cleaned the fins on the radiator? Make sure air can flow freely through the radiator.

Yes it has a new thermostat I have tried flushing the system as well and also cleaned the fins on the radiator

 

[Geoff 2]

Vac adv will only help it run cooler at idle if the VA unit is connected to manifold vacuum [ a very good idea ], not ported.

 

[68-500]

I consider manifold VA to be the only correct way. Should have stated that.

 

[MarPar]

Anyone mention timing yet?

 

[MarPar]

Curiosity got the better of me and I had un-ignore who you quoted. Yep, I was right as to who it was.

 

[RJRENTON]

Anyone mention timing yet?

YES...SEVERAL TIMES plus vacuum leaks and loose wire connections....
BOB RENTON