350 oil leak

[thumbone]

This is a follow-up to a previous post on my oil leak Went to O'Rielly and bought their dye, Lowes for a black light bulb. Put the stuff in, got under the motor with it running and still could not tell where it was coming from. Dropped the pan and replaced the rear main seal along with new pan gasket. Guess what, it still leaked. So now I'm P***ed off so I pulled the engine, removed the flywheel, used my oiler to pump the dye and low and behold one of the oil galley plugs was leaking.

An old time engine machine shop that worked the block over had replaced all three plugs.

Moral of the story - don't trust anyone's work on your stuff.

[Itoldyouso]

Built a 302 for a buddy one time. Lost oil pressure after a short warm up. Found out galley plug in the timing chain area had blown out, and the timing chain chewed it to bits. Now I have the shop tap threads and use screw in plugs wherever I can.


Don

[76GMC1500]

Most shops use a 3/8ths inch pipe tap and thread the holes for pipe plugs. The thread engagement is poor, but they don't leak.

[pat mccarthy]

Built a 302 for a buddy one time. Lost oil pressure after a short warm up. Found out galley plug in the timing chain area had blown out, and the timing chain chewed it to bits. Now I have the shop tap threads and use screw in plugs wherever I can.


Don

you have to watch this you can block oil feeding or slow needed oil flow to front main if plugs are to thick or tap to deep on the sbc i do tap them at times but i rework plugs for this job .the steel plugs will not come out very ez if you use 620 loctie on them and stake them like i do

[glennsexton]

Roger that, Pat - a little peen from a punch and some "Loctite Green"works like a charm