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New Owner 2.8l Head Question

  • Thread starter Thread starter '63 Murphy
  • Start date Start date Nov 24, 2015
6

'63 Murphy

New Member
Nov 24, 2015
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1
Nov 24, 2015
#1
  • Nov 24, 2015
  • #1
Hello all! I picked up a 1974 MII project that someone else wasn't going to finish, and I am cleaning up the 2.8L that came with.

After pulling the valve covers and finding some 'significant' build-up of oil/dirt, I began to clear out the oil runners in the head. One side dumps into a pushrod hole, but the other side was filled and clogged.

I dug it out, but bottomed out at the block. The hole goes a bit sideways, and appears to have a slot in one side. All I can see is a manifold bolt in there...


Should it be clear for oil to flow back into the pan? Is it worth pulling the heads to make sure it is clear?


Thanks!




 
Last edited: Nov 24, 2015

Adieu

Easy there, this ain't a dating site.
20+ Year Stangneter
Mar 7, 2002
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Nov 24, 2015
#2
  • Nov 24, 2015
  • #2
Any time I'm dealing with an engine that has been sludged, I always prefer to tear it down to at least the short block for cleaning.

The pictures you've posted don't make things look that bad, but I have no idea how much cleaning you've done.
 
6

'63 Murphy

New Member
Nov 24, 2015
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Nov 24, 2015
#3
  • Nov 24, 2015
  • #3
74stang2togo said:
Any time I'm dealing with an engine that has been sludged, I always prefer to tear it down to at least the short block for cleaning.

The pictures you've posted don't make things look that bad, but I have no idea how much cleaning you've done.
Click to expand...


I was thinking button it up and run until it croaked and put in a late model engine/trans combo. It was a runner, but I do not want an oil flow issue ending it's life early. It's pretty cruddy, and I may as well since it's on the stand.

If I pull them, they'll go in for seats, guides and springs.
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
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Nov 24, 2015
#4
  • Nov 24, 2015
  • #4
Not experienced in those engines, but by the looks of things, I'd be pretty sure that hole should have some oils flowing through it
 
6

'63 Murphy

New Member
Nov 24, 2015
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Nov 25, 2015
#5
  • Nov 25, 2015
  • #5
Yea, like we figured, it passes over to the adjacent pushrod hole for return. So oil would have puddled over to the other end.
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
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#6
  • Nov 25, 2015
  • #6
purty
 
6

'63 Murphy

New Member
Nov 24, 2015
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Nov 25, 2015
#7
  • Nov 25, 2015
  • #7
That'll buff right out.

:Lolno:
 

LILCBRA

I wish I didn't have all of these balls in the air
Mod Dude
Dec 6, 2005
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Nov 26, 2015
#8
  • Nov 26, 2015
  • #8
I also don't have experience tearing down or rebuilding the 2.8, but generally the oil return holes are toward the bottom of the heads since oil will flow downhill. I dunno what this hole is really meant to do, something for crankcase pressure maybe?
 

DomMc

Member
Oct 17, 2015
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Frisco, Tx
Dec 1, 2015
#9
  • Dec 1, 2015
  • #9
I have my 2.8 tore down at the moment.
I only have the heads here at the moment as the block is at the machine shop.

Here's what mine looks like.



Definitely clear.
And I haven't touched or cleaned this up at all.
 
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