Exhaust riser

[Jim Walsh]

How long does an exhaust riser last? Nine years and one month, in my case. If your exhaust riser is getting long in the tooth you may want to look at a timely replacement to save yourself from having to procure a replacement in the middle of nowhere.
Mine was kind enough to expire a half mile from my slip as I was returning from a day sail but, man, can that exhaust make a mess of your engine space in short order. I also ended up with about four gallons of exhaust water in my bilge. Yuck! I kept a close eye on my water temperature gage and safely returned to my slip.
I checked with my mechanic and he had the parts on hand and was able to install a replacement in a couple hours. This is certainly a job most can perform on their own but it was nice handing wrenches to the contortionist as he performed the removal and installation

[gates_cliff]

Well since I have no idea of the age of the exhaust riser on my boat, I'll have to ask the mechanic that has done work for me about it. In addition, I'd have no idea where the exhaust riser is. I can guess, but not certain.

[csoule13]

Well since I have no idea of the age of the exhaust riser on my boat, I'll have to ask the mechanic that has done work for me about it. In addition, I'd have no idea where the exhaust riser is. I can guess, but not certain.

Cliff, since we both of 27s, I'm guessing you have the Yanmar YSM8. I believe this whole unit is the ugly 180 degree elbow set up on the(if you are looking at the front of it) left side of the engine, about halfway back. There is a triangular plate that connects to the engine with three bolts. That pipe connects to the elbow, which has the raw water hose connected to it. From there, on to the wet muffler and then out the back of the boat.

The elbow on mine has a pinhole in it, and while there are a number of good DYI solutions involving black pipe, I'm replacing the whole set up with something the guys at exhaustelbow.com are going to whip up. I was quoted a price of $200, which given the other projects in flight fits my needs and budget.

[Jim Walsh]

Here's a photo of my new exhaust riser for those who may be unfamiliar. All inboards have something similar to prevent cooling water from entering the engine through the exhaust manifold..