78 Johnson 115 intake manifold

[phx5kegsman]

Hello, I am rebuilding the carbs on my 115hp. After pulling both carbs and peeling off the gaskets, I noticed a "chip" in the intake manifold where the lower carb mates to it. See pic. Is this something that I should be concerned with?

TIA, Bryan

 

[tphoyt]

It would of no concern to me

 

[jimmbo]

Does the Gasket cover It, and the Screw above it completely?

 

[Mc Tool]

Id make sure that manifold and the carb surfaces were flat, put a smear of gasket cement just around the chip (both sides of the gasket ) , bolt the carb up and leave it for a day .
You could dress it up and use liquid metal to fill the void and dress it up flat but its not a high stress joint ,and the carb has 4 studs holding it on , one of which is proximal .
Just make a good job of fitting the carb and I think it will be fine .

 

[phx5kegsman]

Thanks. Any recommendations on Gasket compound?

 

[Mc Tool]

Thanks. Any recommendations on Gasket compound?

Not from here but Im thinking more mechanical strength than sealing . The gasket will do the sealing but just thinking about that gasket getting squeezed out where the support is a bit thin so ya wanna glue it in .
If I had to do it right now Id clean the metal surfaces with isopropyl alcohol (coz I got some )and a brush ,and then use threebond sealer , but any decent quality engine sealer will do ,permatex is good too

 

[tphoyt]

For what’s it worth that chip looks like a casting defect to me has has likely been there from the start. If it’s new I would be concerned about where the chip went but I don’t think the gasket sealing that area will be a problem.
Just my thoughts of course I could be way off.

 

[racerone]

There are likely bigger issues inside this 50 year old motor !