I built a new 2.8L V6 for my Pinto, and it ran great....until a rocker arm broke. There's no oil coming out of the rocker pedestal so the valve-train was completely dry. Anyone else have this problem?
   How does oil get to the valve-train? My understanding is that it goes around the cam bearing, through the a hole in the block to a small hole next to a head bolt, around the bolt through the head, and into the rocker shaft. Is this right?
  Not sure what to do. Any suggestions/insight? Really don't want to tear it out again :-/
Thanks
--DK
Hello pennpaldan,
Did you have NEW cam bearing put in???
I had the same problem years ago when I thought I was using the "BEST" machine shop around.
Turns out that they did not line up the bearing properly and my passenger side bank was not oiling.
Depending on how much damage you have done....?????
You can drill out the cam bearing through the center oil passage.
Basically create a NEW hole for the oil to go through.
You will need a very long drill bit and you will need to remove the distributor and prime the oil system to get the metal shavings out this the pressure-ized oil.
I almost forgot.
You have to pull the head on that bank of the motor.
So off comes the intake and the waterpump housing.
Hope that helps.
I know it sucks!!!!!
From Pintony
Thanks Pintony,
That's what I was afraid of. I still can't believe that oil can go up that little passage and around the stud, but I guess it was working that way before the rebuild. Yeah, they're new cam bearings, along with a new cam. Seems like to drill out the bearing, I'll have to pull the cam. Probably be easier just to pull the motor out to do it. Never using
that machine shop again. Oh well, guess I'll know for next time. With only a few hundred easy miles on it, hopefully the only things I'll need to replace (besides gaskets and such) will be the Busted Rocker arm. Good idea with the drilling out...wouldn't have considered that if you hadn't mentioned it. Thanks again.
--DK
Quote from: Pintony on May 30, 2005, 05:45:45 PM
Hello pennpaldan,
Did you have NEW cam bearing put in???
I had the same problem years ago when I thought I was using the "BEST" machine shop around.
Turns out that they did not line up the bearing properly and my passenger side bank was not oiling.
Depending on how much damage you have done....?????
You can drill out the cam bearing through the center oil passage.
Basically create a NEW hole for the oil to go through.
You will need a very long drill bit and you will need to remove the distributor and prime the oil system to get the metal shavings out this the pressure-ized oil.
I almost forgot.
You have to pull the head on that bank of the motor.
So off comes the intake and the waterpump housing.
Hope that helps.
I know it s*cks!!!!!
From Pintony
Hey pennpaldan,
I did not pull my cam. And you might get away with just pulling the intake and head.
Like I said it was a long time ago.
I think I was 18 years old.
Now I'm 40
My V6 was in a 1974 Capri.
Much heavyer than an early Pinto.
Should make a Pinto FLY!!!!!
From Pintony
Sorry for my not understanding. How'd you drill through the cam bearing without hitting the cam? Or did you just try to barely poke through so that you only nicked the cam? Thanks.
Hey pennpaldan,
I think I used a hand drill and kept using a drill to prime the oilpump to see if I had cut through.
If I remember corectly the cam has an oil channel in the center lobe so that is all I'd hit is the hollow part of the oil goove.
From Pintony
I think you're right about the oil groove. That makes sense. Good memory, and good idea. As soon as I get time I'll try it out. Thanks for the advice.
--DK
Quote from: Pintony on May 30, 2005, 09:48:16 PM
Hey pennpaldan,
I think I used a hand drill and kept using a drill to prime the oilpump to see if I had cut through.
If I remember corectly the cam has an oil channel in the center lobe so that is all I'd hit is the hollow part of the oil goove.
From Pintony
Hey DK,
You need to check your rocker shafts too.
Most likely have galded the other rockers on that bank of your engine.
I have an extra set from a parts V6 that I have been hangin on to. For What, I don't remember???
Let me know if I can be of further help.
From pintony
Another thing to check would be the head gasket(s). If they are installed improperly, they can restrict the oil flow to the head and rockers.