Risers and Manifolds

IMPECKABLE

New Member
May 29, 2021
25
Los Angeles
Boat Info
2006 Sundancer 340
Engines
2 Mercruiser 8.1S Horizon
I have a 2006 Sundancer 340.
The engines are 8.1S Horizon
Is the exhaust system "Dry Joint"?
 
I don't think so , do they have a water inlet going into the riser. Thought they changed in 2004 to all dry joint
 
They are probably dry-joint exhaust. Can you take a picture of your manifolds and risers and post it here?
 
I have a 2006 Sundancer 340.
The engines are 8.1S Horizon
Is the exhaust system "Dry Joint"?
While technically yes - the "dry joints" were typically used in reference to the upgrade to some older exhaust configurations with cast iron spacers that had water channels in them that fed the elbows. The dry joint update replaced the spacers with solid ones and the water bypassed the spacer - hence the dry joint.

The 8.1s have regular manifolds (most cast iron) and stainless steel elbows. The two tubes on the side of the elbows feed the water jacket from the manifold with no water flowing through the joint connecting them. The 340SDA use the elbow with the 2" rise.

-Kevin
 
While technically yes - the "dry joints" were typically used in reference to the upgrade to some older exhaust configurations with cast iron spacers that had water channels in them that fed the elbows. The dry joint update replaced the spacers with solid ones and the water bypassed the spacer - hence the dry joint.

The 8.1s have regular manifolds (most cast iron) and stainless steel elbows. The two tubes on the side of the elbows feed the water jacket from the manifold with no water flowing through the joint connecting them. The 340SDA use the elbow with the 2" rise.

-Kevin
Thank you Kevin!
 

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