Fishermark
Vice Admiral
- Joined
- Oct 19, 2003
- Messages
- 5,617
achris posted awhile back about modifying the inline six exhaust manifolds to help avoid cracking. Since I am putting on a new manifold and riser on my dad's Mercruiser 165, I wanted to make sure I understood the procedure correctly.
(Here's a link to the original post: manifold water reversing post )
As I understand it, you modify the water flow to the manifolds as illustrated in the following diagram:
I have the blocking plate for between the riser and manifold - it came with the riser.
Questions:
1. Did I diagram it correctly? (Sorry for the crude drawing - I'm not an artist! )
2. When I replace one of the plugs on the riser with a 90 degree brass fitting, does it matter which plug I use? Here's my new riser - it has three possible plugs. Is it okay to only use one - or should I put a fitting on both sides of the riser and tee the hose to go to both? Is that overkill? Inquiring minds want to know!
(Here's a link to the original post: manifold water reversing post )
As I understand it, you modify the water flow to the manifolds as illustrated in the following diagram:
I have the blocking plate for between the riser and manifold - it came with the riser.
Questions:
1. Did I diagram it correctly? (Sorry for the crude drawing - I'm not an artist! )
2. When I replace one of the plugs on the riser with a 90 degree brass fitting, does it matter which plug I use? Here's my new riser - it has three possible plugs. Is it okay to only use one - or should I put a fitting on both sides of the riser and tee the hose to go to both? Is that overkill? Inquiring minds want to know!
