Dan,

Yup. He’s in really tight with a racing machine shop, so they pushed it through. I was also able to get everything on demand. Literally everything I needed was on the shelf, ready to ship. Once we decided on a course of action, everything has been falling into place pretty smoothly. He’s got the head gaskets in hand now, and I’m hoping the rockers, as well, so the long block is on a pretty short horizon. Hell, if the weather holds out, we might have the boat in the water before Christmas. Seriously.

Thanks. Brad.

My 496 risers. I used Eddie Young's writeup.
https://cimg6.ibsrv.net/gimg/www.off...cc970b1635.jpg
https://cimg7.ibsrv.net/gimg/www.off...d03fe3a33c.jpg
https://cimg9.ibsrv.net/gimg/www.off...d2c79e4e5b.jpg

Padraig,

How to install oxygen sensor bungs. - Offshoreonly.com

Found it!

Thanks. Brad.

Ryan,

After a bit of a rethink, I am planning to incorporate them into the tilt risers I made. I'll post pics when we get them done. Work has picked up quite a bit, now that election season is over, so it might be a minute....

Thanks. Brad.

Guys,

https://cimg4.ibsrv.net/gimg/www.off...4f3fc2b3d.jpeg

Crap…! Time for a bit of a rethink on the plumbing of my tilted riser blocks, too. :picard1:

I hate it when I get ahead of the build, then realize a plan was sideways all along.

Thanks. Brad.

Guys,

https://cimg1.ibsrv.net/gimg/www.off...cb7c61705.jpeg
https://cimg2.ibsrv.net/gimg/www.off...8a664ed52.jpeg
https://cimg3.ibsrv.net/gimg/www.off...dccdcb643.jpeg

I have a plan for the riser blocks.

https://cimg4.ibsrv.net/gimg/www.off...1eaad5ef7.jpeg
https://cimg5.ibsrv.net/gimg/www.off...9e067c9cf.jpeg
https://cimg6.ibsrv.net/gimg/www.off...63192351e.jpeg

And for the O2 sensor bungs.

Thanks. Brad.

Sure is purdy, but will it work? :evilb: You sir have some talent. :D

SonicSS,

Thirty-some-odd years of making chips ought to account for something. :ernaehrung004:

Shouldn’t be any real issues with it not working. It’s just a water jacketed exhaust riser. Pretty basic function. The only thing I’m worried about now is the interior water outlet conflicting with the valve cover. Won’t know how that is going to work out until we get to that point.

Thanks. Brad.

Guys,

https://cimg1.ibsrv.net/gimg/www.off...44c6ca9df.jpeg

A little bit of progress. Scorpion Endurance Marine rockers are on order and should be in hand soon.

https://cimg3.ibsrv.net/gimg/www.off...f1fd31e60.jpeg
https://cimg4.ibsrv.net/gimg/www.off...21640da09.jpeg


O2 sensor fits snug, but it fits. Both sides have a bung. They will be welded in tomorrow, as will the elbows that correct the plumbing conflicts.

We will use closed loop to set the tune, then convert to open loop. The builder already has a base tune built that he expects to be fairly close. I believe there’s a O2 reader that transmits Bluetooth and has a mobile app….? I may go that route, just to check in on it occasionally, but I do not intend to run the boat in closed loop.

Thanks. Brad.

I am wondering if your riser block even needs a water jacket. I would think that the manifold and riser would act as a heat sinc and pull almost all of the heat out of it. Anyone ever tried it?