Oil leak in the head

[damicotile]

I noticed oil leaking out of the head through the studs. I looked under the car while doing the valves and while looking up at the push rod tubes I saw oil which had been leaking out through the studs.
Are there seals behind the head nuts to keep that from happening?
_________________
'73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated

__________________________________

[madmike]

No seals on the head studs, is the engine vented with a breather of sorts?maybe over filled with oil?Maybe retorque the heads will cure it,Madmike
_________________
'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works"

[DarthWeber]

You are supposed to apply sealant around where the stud comes thru the head. When you put the washer and nut on the stud the sealant gets smushed into the hole sealing the head so oil won't escape.

[fuguboy]

I got the same problem , can I reseal only bottom studs with engine in car ? Can I do one stud at a time and re-torque nut ?

[Quokka42]

No, you really want to loosen them all up and re-torque in the correct sequence.

[fuguboy]

I kind of thought so , I was hoping maybe someone did it with good results .

[Eaallred]

I'd do it. It's worth a shot. Worst case scenario is you have to do what you might have to do anyway, right?

The lower nuts can loosen much easier than the top due to them always being bathed in oil. Do one at a time, remove, reseal, retorque to proper spec.

Honestly, no harm, no foul. Try it. You won't hurt anything trying.
_________________
Eric Allred

You have to remember something: Everybody pities the weak; Jealousy you have to earn.

[Steve Arndt]

As Eric said, it is okay to do. I had to do this to my last engine. One at a time, and clean everything perfectly.

[bugguy1967]

Wait, you're supposed to seal them at the bottom or it's a good trick to keep the studs dry? I've never heard of doing that, but it is a good idea.
_________________
"A petrol engine can start readily, run smoothly and give every appearance of being in good order, without necessarily being in good tune." - Colin Campbell, "The Sportscar Engine"

[Eaallred]

I put motoseal under the washer, then put motoseal under the nut. I don't do anything on the threads.
_________________
Eric Allred

You have to remember something: Everybody pities the weak; Jealousy you have to earn.

[mark tucker]

I use the teflon thread sealent on washer stud&nut.also the lower studs take more "punnishment" 1 due to them being longer and 2, because the valve spring pressure& the pushrods pushing out on that side of the head.I would (and have done before) retorque the head studs on the lowers. I pulled &checked them all and only the lowers moved, then backes off & retorqued them all, and the uppers all stoped about where they were, and the lowers went to thier new location where they were after I tried just doing them with out loosening.
another thought on this, Ive never seen a head leek any where but the lower portion.those springs are pretty strong . and dont forget some(most) heads have the rocker stud going through the head, it may be leeking there too.(and that does take a seal)

[fuguboy]

I will try it so I don't get my new j-pipes oily .
My engine might be asking for a web cam rebuild for x-mas .