Hello guys, I am new to this forum.
Here is what I have:
1999 Bayliner 2655 with 5.0L V8 (carb) , Alpha 1 gen. 2 drive
I have a problem that has developed over the past couple years that I can't seem to figure out ... most of you will probably think: "here we go again...we have covered this before" ... as I have seen these symptoms on other forums and thought the same thing....please read ALL the post before giving the standard answer please, thanks.
My starboard side manifolds and risers are WAY hotter than port AND at the oulet at the transom it pours out the port side and just sort of spits out the starboard.
Before I get the "its a clogged manifold, riser, elbow" stuff let me tell you they are new ... so that's not it.
I can take a C-clamp and clamp off the port supply hose at the Tstat housing and the water will then pour out the starboard side and spit at the port. The starboard manifolds, risers and elbows then run cooler than the port! All the while the engine temp. stays rock solid at 165! AND when I then remove the C-clamp (with the engine still running) the heavy stream REMAINS on the starboard side!!?!
(you would think it would go back to the other side like it was before the test began)
If I shut the engine off and let it sit a while then restart it then again starts with full flow out of port.
I have posted about this before on another forum but could never seem to get an answer other than "the starboard side always runs a little hotter" ...well my port side is cool enough to leave your hand on while the starboard side gets so hot you can't leave your hand on it for more than 2 seconds (will get IR gun readings later) and I know that is TOO MUCH of a temperature variant.
When it was new, yes the starboard side was a LITTLE hotter but not this much.
I can't understand why the water isn't being split equally going to the manifolds from the Thermostat housing.
The Tstat housing is clear as a bell, I cleaned it real good while I had it off anyway (it was clean to start with though) and the plastic diverter is in there correctly and the Tsat is operating perfect. This is the most puzzling thing I have ever run across in all the engines I have ever worked on.
My Tstat housing doesn't have the rod and ball setup to equalize the pressure it has an inlet from the leg, a large hose to the water pump (circulating) and then 2 hoses going to the bottom of the (nice and clear) manifolds.
Here is a list of everything that has been replaced/checked so far -
(and it did it before any of these were replaced also)
- Water pump impeller/plate (leg)
- Circulating water pump
- All hoses checked and clear
- New hose from drive to engine (flow checked to be unobstructed)
(this done during bellows replacement earlier this year)
- Manifolds new/ risers and elbows clear as a bell
- Flapper valves checked and OK
- No obstructions in exhaust Y pipe
- Tstat housing checked clear and clean
- New Tstat working properly
- Checked power steering cooler tube to be clear (in line with hose from leg)
So there you have all the pieces of this puzzle that I have ... now if I can somehow get this puzzle to work out then my life can get back to normal
A case of your favorite brew to whoever puts me on the answer to this mystery.
Thanks for letting me bend your ear.
Kirk
Here is what I have:
1999 Bayliner 2655 with 5.0L V8 (carb) , Alpha 1 gen. 2 drive
I have a problem that has developed over the past couple years that I can't seem to figure out ... most of you will probably think: "here we go again...we have covered this before" ... as I have seen these symptoms on other forums and thought the same thing....please read ALL the post before giving the standard answer please, thanks.
My starboard side manifolds and risers are WAY hotter than port AND at the oulet at the transom it pours out the port side and just sort of spits out the starboard.
Before I get the "its a clogged manifold, riser, elbow" stuff let me tell you they are new ... so that's not it.
I can take a C-clamp and clamp off the port supply hose at the Tstat housing and the water will then pour out the starboard side and spit at the port. The starboard manifolds, risers and elbows then run cooler than the port! All the while the engine temp. stays rock solid at 165! AND when I then remove the C-clamp (with the engine still running) the heavy stream REMAINS on the starboard side!!?!
(you would think it would go back to the other side like it was before the test began)
If I shut the engine off and let it sit a while then restart it then again starts with full flow out of port.
I have posted about this before on another forum but could never seem to get an answer other than "the starboard side always runs a little hotter" ...well my port side is cool enough to leave your hand on while the starboard side gets so hot you can't leave your hand on it for more than 2 seconds (will get IR gun readings later) and I know that is TOO MUCH of a temperature variant.
When it was new, yes the starboard side was a LITTLE hotter but not this much.
I can't understand why the water isn't being split equally going to the manifolds from the Thermostat housing.
The Tstat housing is clear as a bell, I cleaned it real good while I had it off anyway (it was clean to start with though) and the plastic diverter is in there correctly and the Tsat is operating perfect. This is the most puzzling thing I have ever run across in all the engines I have ever worked on.
My Tstat housing doesn't have the rod and ball setup to equalize the pressure it has an inlet from the leg, a large hose to the water pump (circulating) and then 2 hoses going to the bottom of the (nice and clear) manifolds.
Here is a list of everything that has been replaced/checked so far -
(and it did it before any of these were replaced also)
- Water pump impeller/plate (leg)
- Circulating water pump
- All hoses checked and clear
- New hose from drive to engine (flow checked to be unobstructed)
(this done during bellows replacement earlier this year)
- Manifolds new/ risers and elbows clear as a bell
- Flapper valves checked and OK
- No obstructions in exhaust Y pipe
- Tstat housing checked clear and clean
- New Tstat working properly
- Checked power steering cooler tube to be clear (in line with hose from leg)
So there you have all the pieces of this puzzle that I have ... now if I can somehow get this puzzle to work out then my life can get back to normal
A case of your favorite brew to whoever puts me on the answer to this mystery.
Thanks for letting me bend your ear.
Kirk