Ski Nautique Y-pipe exhaust

Yes.

I wouldn't be too concerned in flat bottom boats where the engine is higher up off the water.

Someone like Gary or Ken might be able to find the spacers used even on PCM pyramid manifolds on the Fish.

Reports of logs being susceptible to reversion (even combined with no mufflers or flaps) seem a bit exaggerated... otherwise, I’m not sure how so many of us with older boats configured that way have escaped this reversion epidemic for so long.

I am currently working on a pair of v hull boats both with log exhaust manifolds and no mufflers. I am heavily counting on my flappers to prevent reversion.

gt40KS wrote: As part of the rebuilding process, I am getting rid of the inverta-flo and installing a y-pipe, straight through exhaust system. I know it's not very popular with most of the CCF folks, but let's face it, we all know I'm not your conventional CCF thinking guy.     Anyway, as such it's not an incredibly common topic.

Its not that uncommon at one point I am pretty sure the boat dr was selling a kit at my correct craft parts and race city marine also installed one or two IIRC.    Search the older posts and you will probably find a picture, or give the boat dr a call. Keeping a flapper is not a bad idea.

Riding around in the back seat of a ski boat is a crummy ride with or without muffler(s)

Thanks Chris. The boat had a flapper when I bought it. But I haven't inspected it very well, I may need to replace it.

As part of the rebuilding process, I am getting rid of the inverta-flo and installing a y-pipe, straight through exhaust system. I know it's not very popular with most of the CCF folks, but let's face it, we all know I'm not your conventional CCF thinking guy.    

Anyway, as such it's not an incredibly common topic. I've done my thread searching and read what there is out there and until recently I figured it was fairly straight forward. But something came up in a Fish Nautique thread recently that got me thinking so I thought I'd ask the group to get some input from those who may know a bit more. The question is if I need to be concerned about water reversion with no muffler or inverta-flo and the stock GT-40 risers?    I'm thinking that the exhaust is well above the water line so I should be good, but a little more input would be appreciated.

Thanks