Quote:
Originally Posted by slowbird
Not saying this is your issue and not sure what head gasket you are using but if you are using stock type head gaskets (like FelPro) the head bolt holes in the gaskets are elongated enough theybreach into the valley of the block on those center intake head bolts (see pic). It will suck oil up through there if that area isn't sealed and there is a hole in the head bolt boss (like you have).
If you are running gaskets like this I would swap them out for Cometic ones which don't have those head bolt holes elongated liked that.
|
...and the winner is...!
Well.. So I managed to get out to the garage long enough to pull the intake off again. I rigged up a little adapter using some expanded foam material that lets me put suction on the intake port using a little shop vac I have.
Looks like the breach to the pushrod hole is able to pull some oil even with the brass tube in there. I can wipe it clean, run the vac on the intake, and then still get oil on my finger from the exposed bit of brass tube after.
It also looks like I'm still getting some down the rocker stud hole so I seem to have a two for one. But I've now realised that the rocker stud hole is enough deeper than the end of the rocker stud that I don't need to try sealing the threads (and I realised that will never work anyway because Edelbrock puts helicoil type inserts in the hole and they waller themselves loose with repeated torquing) I can just clean out the hole well once more and make a plug for the bottom of the hole. Maybe with some epoxy or something.
Anyway, so since I seem able to pull oil from the valley through the big oval head gasket holes it seems I need to say goodbye to my favoured 1018 Fel Pros. I've got a set of the Mahle head gaskets on order from RockAuto and they seem about the same thickness (advertised .040 vs the Fel Pro .039) so hopefully that will take care of that side. Hope they hold up. They seemed quite cheap but if they work they work. Should seal up the bottom side anyway.
Just wanted to say I'm still here and if this works I'll be so over the moon.
I'm also working on adding in a small pusher pump. I've been thinking about not gaining any ET and the nosedive in the top end during my fastest 1/4 mile pass. I think I'm not able to fuel it enough. So hopefully I seal up the oil ingress and get a little more fuel coming in and maybe actually go faster...
Sam