PDA

View Full Version : Whats the purpose of these two oil holes and why plug them?


Anonymous_User
11-25-2008, 11:32 AM
from THIS THREAD (http://www.turbo-mopar.com/forums/showpost.php?p=358371&postcount=64):

http://i91.photobucket.com/albums/k302/boostgeek/100_2252.jpg
http://i91.photobucket.com/albums/k302/boostgeek/100_2256.jpg
Turbo3Iroc
11-25-2008, 12:00 PM
Those are the oil galley. Basically the internal distribution of oil in the engine. Usually they have freeze plugs in but the set screws make it more reliable.
turbovanmanČ
11-25-2008, 06:31 PM
Yep, they are for the main oil galley and I had my machinist swap to those due to leaking issues with the frost plug type. I had one leak and it took me forever to figure out where it was coming from, :banghead:
slasky
11-25-2008, 08:36 PM
Yep, they are for the main oil galley and I had my machinist swap to those due to leaking issues with the frost plug type. I had one leak and it took me forever to figure out where it was coming from, :banghead:

+1

I had one leak on a new rebuild and took forever to find. I thought it was the rear main seal at first.
Turbo3Iroc
11-25-2008, 09:21 PM
I thought about the set screws but was getting pressed for time. What size did you end up using Simon?
black86glhs
11-25-2008, 09:28 PM
If you leave the plugs loose, it will keep the car from rusting out.
turbovanmanČ
11-25-2008, 09:33 PM
I thought about the set screws but was getting pressed for time. What size did you end up using Simon?

Not sure honestly, I think they are from a small block chevy, the cam plugs. I can find out, :thumb:
Turbo3Iroc
11-25-2008, 10:01 PM
Most hardware stores have a selection of set screws though they would need to be a pretty big diameter. No hurry, just getting ideas together for the next build. Thanks.
4 l-bodies
11-29-2008, 01:27 AM
Not sure honestly, I think they are from a small block chevy, the cam plugs. I can find out, :thumb:
3/8" NPT plugs. I use them all the time also in the head on all 8V's.
Summit or jegs has them cheap. Aluminum versions also for the cylinder head.
Todd
"Top Fuel" Bender
11-29-2008, 10:25 AM
Most hardware stores have a selection of set screws though they would need to be a pretty big diameter. .

NO set screws
NPT pipe threads , use a teflon sealant
set screws have straight threads, won't tighten or seal