1966 GM Merc Elbow is rubber?

[Killerwhales12117]

Just joined but have been reading threads for weeks. This site is AWSOME! Hope im not asking an already asked question. Im repairing a friends first boat. He has a 1966 houseboat powered with a 1966 merc GM 110. He overheated last year BAD from a worn waterpump in outdrive. Engine still has compression and starts. I have oudrive removed for normal rebuild of bellows and pump. No biggi except its my first and taking time. Oh yea gimble bearing is seized. Big problem the exaust manifold in boat that is supossed to have a small rubber boot to connect to elbow that goes to transom is not there. It seems last owner removed this entire two parts and installed a boot that goes from exaust manifold elbow down into bilge and out transom. Or better yet its connected to transom with a clamp. If I had to guess its clamped to whats left of a rusted out elbow. Its hard to tell with engine in way. THIS all melted. What do I do? Remove engine? To see if correct elbow can be installed? It seems engine needed to be removed anyway to do this rig job they did so why wouldnt they have installed a metal elbow like should be there or is this 2.5 to 3 foot rubber mess an aftermarket thing made by someone. Is cutting a hole in back of boat and putting exaust out that another solution with flapper so we dont sink. I never removed and engine and if running exaust a different route is possable I would like to.

 

[Bt Doctur]

Re: 1966 GM Merc Elbow is rubber?

Most likely was repaired in that manner because parts are no longer available to make repairs.

 

[Killerwhales12117]

Re: 1966 GM Merc Elbow is rubber?

Would cutting a hole below waterline and running exaust out back of boat work?

 

[Bondo]

Re: 1966 GM Merc Elbow is rubber?

Would cutting a hole below waterline and running exaust out back of boat work?

Ayuh,... We'll need Pictures,.... usually the exhaust dumps, At the waterline, 'n not below it...

 

[achris]

Re: 1966 GM Merc Elbow is rubber?

The vast majority of people who put 'thru-hull' exhaust regret it and wish they never did it. The noise is unbearable.

 

[Killerwhales12117]

Re: 1966 GM Merc Elbow is rubber?

Thanks i hate to give my friend a fix to his house boat and not more noise. I was getting pictures tonight but im having a problem emailing them. There is no easy fix. I need to pull the engine to remove old elbow made of rubber and find a used one to put in. Such a pain with boat having a top on back. If anyone has a good source for mercruiser parts for a 1966 GM 110 let me know.