Drain points on a 3.0

[bspeth]

My boss has a 3.0 and I want to check it for him to make sure its drained proper.Dont have SN. it probably late 90s alpha one gen 2 drive. Engine is carbed.Can you tell me the drain points,I can follow the intake hose but its nice to hear from people who have actually done one.Thanks-Blair

 

[wrench 3]

Re: Drain points on a 3.0

There is a drain plug on the starboard side of the engine toward the rear, and one on the bottom of the manifold. When the water stops running, rod out the hole to make sure it's not plugged. Pull the water hose of of the PS cooler and lower the drive to let it drain properly.

 

[Bondo]

Re: Drain points on a 3.0

There is a drain plug on the starboard side of the engine toward the rear, and one on the bottom of the manifold. When the water stops running, rod out the hole to make sure it's not plugged. Pull the water hose of of the PS cooler and lower the drive to let it drain properly.

Ayuh,.... I think you'll find both drains on the Port-side of the motor,....

 

[jayhanig]

Re: Drain points on a 3.0

Ayuh,.... I think you'll find both drains on the Port-side of the motor,....

Mine were on my 3.0 liter GM Mercruiser. Port side as you face the bow, definitely.

 

[bspeth]

Re: Drain points on a 3.0

Very good thanks dudes.

 

[1960 Starflite]

Re: Drain points on a 3.0

My 1979 3.0L has the two plugs listed above, plus one on the exhaust elbow

 

[Bt Doctur]

Re: Drain points on a 3.0

 

[o'neal]

Re: Drain points on a 3.0

What if you use an inboard up until the ice is on? What I mean is,does one risk freezing and cracking the block after running a day in the cold water then loading and pulling home in freezing condition's/temp's just using the stock drain's or should other precaution's be made?

 

[Bondo]

Re: Drain points on a 3.0

What if you use an inboard up until the ice is on? What I mean is,does one risk freezing and cracking the block after running a day in the cold water then loading and pulling home in freezing condition's/temp's just using the stock drain's or should other precaution's be made?

Ayuh,..... At the launch, when loadin' out, drain the 2 drains in BD's picture, pull the Big hose off the circulatin' water pump, 'n lower the drive to drain while yer tyin' down, raise it to travel, 'n lower it again when ya get where it's goin',...
If ya got P/S, drain it's cooler,...

Nothin' to it, I used to do it til the water at the launches was too Hard to launch through,...