Oil Galley Plug Blew Out

[duo_z]

So finally after many questions and much research I had finished building my 289. I built a test stand, checked everything and hit the starter button. After a little trouble shooting and some tuning she would fire up with not even a half turn of the starter. She sounded sweet. During my enjoyment and happiness I noticed the oil pressure gauge not giving me a reading. So I shut it down and started troubleshooting everything from gauges, hook ups, and the engine it self. I found oil to coming out of the sensor extension, but not my push rods. So I pulled the dizzy and found the problem. An oil galley plug was laying on the lower dizzy support. So half sad and half pissed I started ripping her apart. So I'm wondering could it have been I didn't push it in deep enough, is there something I should look for that could have caused it otherwise?

 

[iskwezm]

did you use any sealant on the plug?

 

[duo_z]

did you use any sealant on the plug?

I did use sealant.
I would also like to note that I did prime the system using a drill drive and I didn't find anything odd. The oil seemed to make it to everything it should have.

 

[duo_z]

Also I am talking about the press in kind, not the threaded ones.

 

[dennis112]

Install a new one with locktite and then use a chisel to stake it in place. Also stake the other ones that you can access.

 

[duo_z]

Sounds like a good idea, I should have thought about that when I put them in in the first place. Hopefully I can do that this weekend and have it back up and running before next week. And if all goes well I will post some pictures and a video.

Thanks

 

[JonK]

I hope you staked or 'peened' the one at the rear gallery crossover - rear center under the intake. A shop rebuilt a sbf for me years ago and didn't dent it hard enough so it would flip up and my oil pressure would drop.
Jon

 

[duo_z]

Just out of curiosity should I have done that to the freeze plugs too?

 

[iskwezm]

freeze plugs dont have the same amount of pressure against them. I only staked the oil plugs

 

[horse sence]

i always thread and use thread in plugs ,you can do it your self .it isnt hard
to do ,just need a pipe tap and screw in allen head plugs,do it before you start your
build you dont want shavings in your oil galleys, wouldnt do it now unless you are
tearing it back down all the way, i would use lock tite on the press in plugs, new ones
not the old ones ,clean the holes out good and oil free first and then stake the plugs
as well. for the freeze plugs seal them as well i always use the deep brass plugs
you should never have a problem with them,if the short freeze plugs arnt drived in
strait they will leak

 

[bartl]

If you thread them yourself, either do it before the engine gets tanked, or make sure you get every last filing out before assembly.