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Old 06-02-2009   #11
scottfab
 
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Location: Portland Oregon metro area (Washington side)
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Default Re: I'm i doing this right?

Quote:
Originally Posted by shaynezrl View Post
But this an Lt5.
Text in light blue was a mistake. Please ignor.
FYI Water flow on the LT5 is backward from most motors.
It goes out from the bottom of the motor to the bottom
of the radiator. I use to squeese the hose too in the old
days until I found the other way.
You can also use the same little hose to syphon out coolant
before removing the plenum so that nothing leaks out into
the intake.
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Last edited by scottfab; 06-02-2009 at 01:45 PM. Reason: OOPS made mistake
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Old 06-02-2009   #12
A26B
 
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Location: Arcadia,OK
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Default Re: I'm i doing this right?

Quote:
Originally Posted by scottfab View Post
FYI Water flow on the LT5 is backward from most motors. It goes out from the bottom of the motor to the bottom
of the radiator. .......
Actually it isn't/doesn't. Coolant exits the engine at the top, through the coolant tubes mounted to the injector housings & goes 2 places from there; top of the radiator and to the bypass section of the thermostat housing.

Coolant exits the radiator at the bottom, through the thermostat (when open) and then to the water pump inlet. Water pump discharge enters the engine at the lower end of the cylinders.

The little hose trick is nifty method.
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1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc.
2016 Black-Red, 3LT-Z51 Auto 8-speed.
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Old 06-02-2009   #13
scottfab
 
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Location: Portland Oregon metro area (Washington side)
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Default Re: I'm i doing this right?

Quote:
Originally Posted by A26B View Post
Coolant exits the radiator at the bottom, through the thermostat (when open) and then to the water pump inlet. Water pump discharge enters the engine at the lower end of the cylinders.
.
OOOPs yah I had it backward. Can't belive I did that. Been a while since I worked on it. In fact 10yrs now since I replce the water pump & thermostat.
Page 6B-3 shows the flow. Note from the themostat area water also
goes to the passenger side where the heater core is.
thanks for the correction. It is the orientation of the thermostate that is backward. It's on the bottom and is heated initially by the bypass water.
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