I will be replacing the exhaust manifolds, risers and elbows. The old parts were also dry joint style. When I removed the parts I noticed that the system was installed as a cold riser setup. From what I have read, the warm riser setup will help minimize moisture forming in the exhaust so I see that as a plus. Also, if the engine coolant circulates through the riser it would eliminate or at least extend the time between replacement of the risers. The elbows would still need to be replaced every 3 years as I have the boat in saltwater.
It looks fairly simple to make the change. The block off gasket would move from manifold to the joint between the riser and elbow and the full flow gasket would go between the manifold and riser. Also the hose nipple on the top of the manifold would move to the riser and a plug put in it's place. Provided the coolant hoses are long enough, they would connect to the relocated hose nipple on the riser. Is that all there is to it, and is this a worthwhile change?
It looks fairly simple to make the change. The block off gasket would move from manifold to the joint between the riser and elbow and the full flow gasket would go between the manifold and riser. Also the hose nipple on the top of the manifold would move to the riser and a plug put in it's place. Provided the coolant hoses are long enough, they would connect to the relocated hose nipple on the riser. Is that all there is to it, and is this a worthwhile change?
