Budman, I really don't think you can get a true reading of what your engine is doing on that engine stand. I also can over think just about anything so I feel your pain!

I'd ditch the silent choice diverters and get the right collector setup going on them.

If money is a concern along with noise , you can temporarily make some home made turn downs for the exhaust at the back of the boat. I think your pissingg right into the wind with that exhaust setup you have there. It's not the cam.

Budman, have you considered taking up golf?!

budman,maybe you should try sailboating,no engine problems,lol.

Mike their would be a 38 page thread over on sailboathomos.net asking about the proper teak oil for his cabin hatch lid

sailboathomos.net.

back from the dead........this is basically what I had to say in my 2 paragraph delete. Dump water into pipes just before transom and add mufflers switchable or not to the outside of transom= no more concerns except for future leaks with the headers......but thats a 300 page thread by itself.

Brian you know, according to the Catholic belief, if you take your own life , you go to hell. What's hell like? I can imagine thousands of budmans running around, tapping you on the head asking you rapid fire engine questions for all of eternity!

Stainless Marine + switchable mufflers.

What's hell like? That's easy.......running a boat repair business from April to mid September in Michigan, the rest of the year is a little less stressful.