Re: 1972 Sea Ray
Okay guys I will be replacing both the port side and starboard side exhaust system. Turns out one of the port hoses is cracked and to the point I don't like as well as the elbows were claimed to be working condition but considering they are metal and very coroded I will just replace. So I'm going to order both sides but having a problem measuring my hoses and elbows. The above photo is the port side all intact exhaust that runs from riser to bell housing.
What is the easiest way to measure the O.D. and I.D. of each part to match them up. Also lets say for instance the starting hose that comes off the riser is 4" O.D. does that mean I would need a O.D. on my first elbow reducer to be at least a 3-7/8"? Reason I say this is obviously the hose has a 4" O.D. so the I.D. is going to be slightly smaller. Now can I order a 4" riser hose O.D. and connect it safe to a 3-1/2" elbow reducer O.D.? As in there won't be too much play and since I will be using metal band clamps to tighten down it will work?
The reason I ask all this technical stuff is I'm having trouble finding parts to match my exact measurements. Here is my break down.....
Riser Hose is 4" O.D. with a 3 7/8" approx I.D. then runs to that first Elbow which is a reducer from 3-7/8" O.D. with a approx 3-1/2" I.D but then reduces to a 3" O.D. etc...... sound confusing? I don't know maybe I just need to take it to a boat shop locally or Napa and have them duplicate this for me.