Filling and pressurizing coolant system without running the car?
01-31-14, 01:03 AM
#1
Filling and pressurizing coolant system without running the car?
So I'm coming to the end of my build and just got my vmount installed. I previously drained all the coolant from the engine. I'm wondering if it's possible to get a near full fill without having to run the car and also being able to pressure test (with one of the radiator cap adapter kits)
Would it be possible to fill it as much as I can with the filler neck and then use the pressure cap thing to force the coolant to circulate?
Does this make any sense at all?
Mostly curious because I want to run some water fill and drain cycles through the motor while I wait for parts to arrive. Will give me less to do later.
Would it be possible to fill it as much as I can with the filler neck and then use the pressure cap thing to force the coolant to circulate?
Does this make any sense at all?
Mostly curious because I want to run some water fill and drain cycles through the motor while I wait for parts to arrive. Will give me less to do later.
01-31-14, 11:35 AM
#2
Most of the guys here fill the coolant thru the TB coolant line. That seems to work really well with minimal amount of air trapped in the system.
If you want to "circulate" the coolant, you can put your hose into the filler neck or AST and remove the drain on the side of the block. That would help to flush it out.
Vince
If you want to "circulate" the coolant, you can put your hose into the filler neck or AST and remove the drain on the side of the block. That would help to flush it out.
Vince
01-31-14, 01:22 PM
#3
Like Project88Turbo said hook up your hose to the filler neck and pull the drain plug on the block to "flush" the system. As you do this the block will fill and most of the air should and can escape after that you can drain out the radiator only and add your non-premixed coolant to the system since you need a mix of cooland and regular water. I'm not sure what the prime ratio is but a quick search should provide that information. I've heard it's something like 60%c and 40% water... but don't quote me on that.
02-01-14, 01:03 PM
#4
Recovering Miataholic
Mazda's Coolant Mixture Recommendations
From the 1994 RX-7 Workshop Manual, page E-5:
Coolant Protection above -16°C (3°F): 65% water.....35% coolant
Coolant Protection above -26°C (-15°F): 55% water.....45% coolant
Coolant Protection above -46°C (-40°F): 45% water.....55% coolant
Coolant Protection above -16°C (3°F): 65% water.....35% coolant
Coolant Protection above -26°C (-15°F): 55% water.....45% coolant
Coolant Protection above -46°C (-40°F): 45% water.....55% coolant
02-02-14, 05:41 PM
#5
Rotary Enthusiast
you need to run the car if you are going to get it properly full, because the heater system needs to have water circulated through it..
The best you can do is remove the TB coolant line, and fill as usual from the filler neck untill water comes out of the throttle body hose.
The best you can do is remove the TB coolant line, and fill as usual from the filler neck untill water comes out of the throttle body hose.
02-02-14, 07:12 PM
#6
you need to run the car if you are going to get it properly full, because the heater system needs to have water circulated through it..
The best you can do is remove the TB coolant line, and fill as usual from the filler neck untill water comes out of the throttle body hose.
The best you can do is remove the TB coolant line, and fill as usual from the filler neck untill water comes out of the throttle body hose.
I removed the lines going to the heater and capped them.
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