How do I cap this?

[yprep12345]

Yesterday, I posted this picture and the response was it's a choke not used on this engine. So I also sent an email to my mechanic and the response was. "Those holes are for a non electric choke thermostat which your boat does not have, those two holes are looped by a metal tube underneath the intake. If you saw flames from there on a backfire that means that tube most likely rotted off while it was sitting. If that is the case it will create a vacumn leak and you may have to plate that off....just remember those holes go into your intake and you don't want to try to plug it with something that could fall into your motor!"

Would anyone have any ideas on how to "cap" this and what I should use? What type material/metal etc?

The help on here has been awesome!

 

[Bondo]

Re: How do I cap this?

Ayuh,... A tight fittin' screw, 'n epoxy comes to mind,...

 

[spdracr39]

Re: How do I cap this?

Self tapping bolt or screw.

 

[Radarman68]

Re: How do I cap this?

your mechanic is exactly right.

to boot, the loop goes through the exhaust crossover and I have seen engines 30 years old with that completely intact. I would not worry about it because if it has rusted through, you have bigger problems. If you screw things into that you are likely to cause more issues than you would solve.

 

[agallant80]

Re: How do I cap this?

go to the auto parts store. There is a section of things called 'HELP". They have these nice little covers that go over screws to seal holes like that. They cost about $1.99

 

[achris]

Re: How do I cap this?

Don't need to do anything with them. They are in the exhaust side of the (intake) manifold and have no connection with the intake side. You leave them alone and they'll leave you alone... And no exhaust gas will come out of them either. It's just a tube doing a loop through the exhaust side...If you really must do something, don't screw it, all that will do is stress the sides of the tube and promote a failure. Fill it will high temperature epoxy...

Chris.......