Offshoreonly.com - Installing thru hull tips

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Installing thru hull tips (https://www.offshoreonly.com/forums/general-q/327181-installing-thru-hull-tips.html)

vintage chromoly

06-10-2015 02:26 PM

Also, a good battery drill with a cutch is the tool you want.

If a pistol drill bites ( and it's going to) when you're cutting, bad stuff is going to happen!

Awash

06-10-2015 02:26 PM

Quote:

Originally Posted by keithp83 (Post 4315801)

But what should the downward angle be?

Your existing exhaust riser has the angle built into it already (5 to 7 deg?) your just putting a straight 6" riser extension on correct if so the angle will not change. You want to fit the diverter in with a short hose close to the riser and hose connections down to the thru prop connections.

The above assumes you have a riser like this.

http://www.michiganmotorz.com/mercru...aTYhoCb0vw_wcB

Looks like this when done! Except you will have a riser extension in and more hose down to the thru prop connections

https://www.youtube.com/watch?v=eaDTAEdc8Kk

keithp83

06-10-2015 05:03 PM

Mines a little different since it's an 86
http://i1102.photobucket.com/albums/...FC939EEA90.jpg

liquidlounge

06-10-2015 08:04 PM

Quote:

Originally Posted by vintage chromoly (Post 4315782)

Exactly! That shows why he needs a 4.25 hole. He can achieve that result by drilling a nice concentric hole with a hole saw or he could drill a hole that's too small and sand it out to 4.25". :whistle:

Sorry guys, I guess I need to sharpen my reading comprehension skills. Never meant to imply it needed to be sanded 1/4" ...but then again some one may have taken it that way. Great catch vc!
D

Awash

06-11-2015 06:02 AM

Quote:

Originally Posted by keithp83 (Post 4315892)

Mines a little different since it's an 86

I had an older Mirage with twin 5.7 it was an 88 with thru hull already so I got nothing. I would think if your's is like Wally said 90deg then it has the the jacketed riser and it's not a wet exhaust but jacketed in which case you won't need to worry about the angle, BUT confirm that or maybe someone like BUP or one of the other guys that have worked on all versions of these will chime in.

Good luck with the mods and add some pics and let us know how it went.

keithp83

06-11-2015 07:17 PM

Ok new question lol where should I put this hose? In the riser or the riser extension? Was hoping to get it all done tonight but the company I ordered the riser extensions advertised with the gaskets and hardware and they showed up with nothing :( I hope a local marina caries them I'll have to pick them up tomorrow

http://i1102.photobucket.com/albums/...44C3D2AC_3.jpg

keithp83

06-13-2015 12:37 AM

Well here's the final result

http://i1102.photobucket.com/albums/...A04DE99086.jpg
http://i1102.photobucket.com/albums/...89E05D2B49.jpg
http://i1102.photobucket.com/albums/...53CC0BDC2D.jpg
http://i1102.photobucket.com/albums/...27B92AE584.jpg
http://i1102.photobucket.com/albums/...6B945E69C5.jpg

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