Bravo 1 Corrosion or Something Else?

[meatstorm]

Hi all, new to the forum here and was hoping for some advice. I removed a 1991 mercruiser bravo 1 outdrive to replace the bearing and some other things and noticed something going on. I'm not sure if this is a hole corroded through or something else? Can anyone please tell me whats going on here?
please see attached photos

Thank you

 

[meatstorm]

Well i guess i can't attach photos

 

[alldodge]

Howdy

Need to post one more time with anything (like post 3, hi, three letters ttt ) and then you can upload a pic

 

[meatstorm]

Thank you!

 

[meatstorm]

Trying to post photos here

 

[meatstorm]

Its saying not allowed to create attachments......

 

[alldodge]

Must be how your doing it, try this way

 

[meatstorm]

Thank you alldodge, that's how I was doing it. I'm trying now on my phone.

 

[alldodge]

This is not good or right

That hole will keep the motor from getting all the water it needs. You need to replace the Bell housing

 

[meatstorm]

Thats actually on the upper gear box. Check out the other photos

 

[alldodge]

Went out to my shop and had a look at my two spare drives. They both have a hole in this area, and this is the channel which supplies water up thru the drive. The issue with yours it looks like the hole casting was not cleaned out. This should be a square sort of hole.



The way yours looks you would have a hard time keeping full water moving. See if you can break the hole out the rest of the way

 

[meatstorm]

Thank you for checking on that, I appreciate it. I was thinking that was a possibility buy didn't seem probable. It's crazy to think that little hole supplied water to a 7.4 for 26 years and no problems. Cleaned it all up. Here's a pic

 

[alldodge]

Yep, much better