Cummins block plugs

Begle1

Active member
After installing my valve train I noticed I could see entirely through my block, through the oil rifle above the camshaft.

1. How do I install those little plugs?

2. Are they any other of those little plugs I need to install somewhere that I've forgotten about?

Thanks.
 
Loctite 277, the manual says to use Loctite 277.

Is that really the stuff to use? Seems weird to use red Loctite on a non-threaded freeze plug.
 
Green, for press fit applications. I will get a number, there is also a green for large tolerance fit as well.

All you are doing is increasing friction by occupying Asperity. Either color should be fine.


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Is green Loctite a newer OEM spec or a hot-rodder thing?

I was surprised to see red Loctite referenced in my circa 1990 engine manual.
 
The reference to Loctite doesn't surprise me, the direction to use red Loctite ("high strength thread locker") on a non-threaded, press-fit, liquid-filled plug is what seems wierd to me.
 
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