Hi Katie, and everyone,

Please try searching for answers when you have a question like this that has probably been asked before. Our forum has more than 20,000 posts covering almost a decade of questions and answers among C36 owners, so it's very likely that you'll find what you need with a simple search.

For example, a search for "muffler replacement" yields three pages of results.

Thanks, and good luck with your project!

- nick

Yeah, he's right.

It's a very common project.

I replaced my old broken (no hump hose) muffler with the CD muffler, which features 1-5/8" o.d inlet and outlet like the original.

Make sure you install a hump hose between the muffler and the riser.

Have new exhaust riser gaskets and studs and nuts too.
And copper-based anti-seize for reassemble and future disassembly - you'll be glad you did when you go back in.
 

Could I ask why you are considering replacing it? Repairing it may be an option. And any reason you feel that it's in need of replacement might be premature.

[quote=pilotsailor]Hi, 

After our recent purchase of our 1987 Catalina 36 we are now getting ready to do some engine work & we're wondering if anyone has any experience replacing the muffler on their boat? Ours is original & we are considering replacing it with the custom Aqua Lift muffler from Catalina Direct. Has anyone tried this model or have any recommendations for this type repair? 

Thanks! 

Katie[/quote]

Katie,

What engine is this on?
I recently worked with Catalina owners to replace the crappy Aqualift with a new Centek side inlet/top outlet, and the exhaust riser with the water-cooled riser from Westerbeke.

These were with an M-25XP, an M-25XPB, and a Beta 20.  The design works very well together.  I am not familiar with the C36 engine space layout, but if you want more into, just PM or email me off list.

Ken K