DRR Trophy
| Best place to fill any coolant system is on the low pressure side of the pump. This is why you see most factory radiators have the filler neck on the tank opposite the upper radiator hose. It is best to use an expansion tank(plumbed properly) or use the Meziere 200 series pump.
Meziere Tech.
Make sure your water pump is on whenever you check your coolant level.
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| | | Posts: 270 | Location: Escondido | Registered: July 01, 2011 | 
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DRR Sportsman
| quote: Originally posted by TD3550:
Always better on top. You running an extended neck?. Certain manifold i put in a pet****. Like out of a radiator. Screw it into the crossover on a 598. Fill and basically bleed all the air right out..Same with a 632 that was in an altered with a lay down radiator in the front. No air.Case in point. Like on the earlier Detroit engines. they placed the same bleed valves in the upper radiator hose pipe.Crack the valve while filling the radiator. Reason being prevents a hot block condition while trying to burp it.
When I built my new car last year, i took the bypasses from the back of the intake to the front of the intake off. Since doing that, i have noticed that the engine has hot spots and temperature climbs with water pump on, turn the water pump off and it wont gain anything. I am going to put my bypasses back on this winter, but wasnt sure if i should reverse my water pump or leave it the way it has always been.
Jeremiah Hall
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| | | Posts: 745 | Location: Evansville, IN | Registered: February 24, 2010 |
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DRR Trophy
| The reason you don't see any tempature gain with the pump off is you are not moving any water past it to see a change. The only way to get a accurate temp reading is with the water pump on. Reversing the pump will only reduce the amount of water it flows!
Meziere Tech.
Make sure your water pump is on whenever you check your coolant level.
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| | | Posts: 270 | Location: Escondido | Registered: July 01, 2011 |
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DRR Sportsman
| I added house radiator key vents to the high points on my rear radiator dragster. It works best to fill it with the pump off and bleed the air out.
No matter how many times you paint over a shadow it's still there.
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| | | Posts: 684 | Location: Galesburg Il. | Registered: December 10, 2006 |
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DRR Sportsman
| quote: Originally posted by Bad News:
Sure you are.
Air, air makes steam, steam does not move nor does it cool. The only reason lines go to the back is to remove air pockets. In reality the biggest line you need is a #6.
Fill from the highest point and it will take about a 1/2 hr with the pump running and adding water to replace the air for the air to be purged.
High points, like ls have steam lines, old pro heads had steam lines, ever head has potential air pockets.
I know i am getting the air out of the system when filling, water runs quietly, but that doesnt mean its not building steam. Good point Bad News.
Jeremiah Hall
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| | | Posts: 745 | Location: Evansville, IN | Registered: February 24, 2010 |
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