"I need all of your expert OM
"I need all of your expert OMC help with my 1985 Trophy (V-8 5.0/305cid GM engine and 800 stringer outdrive) exhaust hose replacement. I need to replace the wet exhaust hose that comes from the exhaust manifold risers to the elbow tube and also the hose that attaches from the elbow tube to the bell housing on both sides. All 4 hoses are 3.5 inch ID exhaust hose. Lower hose is 2.5 inches long, upper hose is 4.25 inches long. Both hoses on each side are straight, no bends required.
I put my boat in Lake Washington last weekend and heard water tricking into the bilge. Starboard lower hose was leaking near the clamp, tightened it which did not help. Started engine and that stopped water leak but then you have small exhaust hiss coming into the engine compartment. Pulled the boat out of the water immediately after that. Looks like the failure of this hose or the clamp could put in underwater quickly.
My question is this. Do I absolutely have to use the OEM (909232 & 909371) hoses as published or can I just make exact duplicate lengths with some Shields Marine Nautiflex Wet Exhaust hose? This is my first inboard/outboard boat with a wet exhaust system and I prefer not to leave the proper selection of these hoses to my beginner’s dumb luck! I don’t see what the problem would be with the Shields bulk exhaust hose cut to size but like I said, I am new to this. I welcome any comments, feedback, suggestions or even mild ridicule and scolding as long as it helps me get the job done right.
Thanks to all of you for being so helpful to someone new to this like myself. It is truly appreciated. (picture attached, parts # 18 and 19)
Gerry
Exhaust V8 GM and manifold pic
"I need all of your expert OMC help with my 1985 Trophy (V-8 5.0/305cid GM engine and 800 stringer outdrive) exhaust hose replacement. I need to replace the wet exhaust hose that comes from the exhaust manifold risers to the elbow tube and also the hose that attaches from the elbow tube to the bell housing on both sides. All 4 hoses are 3.5 inch ID exhaust hose. Lower hose is 2.5 inches long, upper hose is 4.25 inches long. Both hoses on each side are straight, no bends required.
I put my boat in Lake Washington last weekend and heard water tricking into the bilge. Starboard lower hose was leaking near the clamp, tightened it which did not help. Started engine and that stopped water leak but then you have small exhaust hiss coming into the engine compartment. Pulled the boat out of the water immediately after that. Looks like the failure of this hose or the clamp could put in underwater quickly.
My question is this. Do I absolutely have to use the OEM (909232 & 909371) hoses as published or can I just make exact duplicate lengths with some Shields Marine Nautiflex Wet Exhaust hose? This is my first inboard/outboard boat with a wet exhaust system and I prefer not to leave the proper selection of these hoses to my beginner’s dumb luck! I don’t see what the problem would be with the Shields bulk exhaust hose cut to size but like I said, I am new to this. I welcome any comments, feedback, suggestions or even mild ridicule and scolding as long as it helps me get the job done right.
Thanks to all of you for being so helpful to someone new to this like myself. It is truly appreciated. (picture attached, parts # 18 and 19)
Gerry