Thru-hull exhaust: Mid-engine/drive shaft/Alpha-1 Outdrive

[ibrettferguson]

1988 Chris-Craft Scorpion 210 BR Ski-Jack

So, I'm trying to figure out what I need to install thru-hull exhaust on my boat. Corsa said they don't have a set up for a configuration like mine.

It's a mid-engine boat, with a driveshaft (jack-shaft) back to an Alpha 1 drive.

Any thoughts?

Thanks!

Note: I feel like all inboards should have thru-hull exhaust.

btw, I have some pics from when carpet was out and new wood/fiberglass/carpet were being installed, but the upload keeps erroring on me. Humph!

 

[Willyclay]

Several photo posting options at the link below.

http://forums.iboats.com/forum/forum-rules-and-guidelines/9938375-photo-upload-tutorial

 

[ibrettferguson]

Well, I've tried in both Chrome and Internet Explorer. Maybe the issue is that I'm trying from work or something. Humph!

 

[ibrettferguson]

Images can be viewed online at https://drive.google.com/file/d/0B-ixS9oqN8p9Q2FMN3JUTXBzQWs/view?usp=sharing

 

[smokeonthewater]

Why? The ONLY thing you'll gain is noise.

 

[ibrettferguson]

Why? The ONLY thing you'll gain is noise.

I understand. Just preference, you know?

 

[NHGuy]

There needs to be a certain amount of drop between the risers and the exhaust outlets to avoid reversion. I'm not completely certain but it may be stated as slope. not just inches. So to get a good amount of slope may require that you raise the risers if there's enough room for the spacer blocks. I think most blocks are in 3" increments.
So to get enough drop that's one potential conflict. After that it's deciding where to locate your outlets. Above, at, or below waterline.
Where does it exit now, through the drive?

 

[GA_Boater]

Here is your pic. Where do you plan on exiting the exhaust?