Stupid NOOB question of the day...

[laserjock]

This was rattling around in my caffiene deprived head this morning so bear with me.

So I've seen a lot of stuff on valley pans lately. They have the hole and gromet for the CDR that gets used for the turbo oil drain on certain models right??? So if you relocate the CDR (banks style for example) and return the turbo oil to a different location (valve cover, mech. fuel pump blockoff, etc.) what do you plug the hole with? You have to plug it right?? Its a hole that leads to the oil system.

This leads me to the next question. I see folks talking about punching holes for the oil drain back. That's also in the valley pan correct?? So besides the intake, what covers the valley pan?

Someone please cure my ignorance as to how this goes together.

Thanks!

 

[IDIoit]

im kind of confused myself on the whole "punching holes in the valley pan cover" thing.
there are 2 holes.
1, for the valley pan cover drain plug, which leads to the back of the block, the one with the 3/8" drive.

the other is for the turbo oil drain back into the valley pan itself.
or for N/A where the CDR vents to the intake.

if you use a different style CDR mounting other than stock, or use a aftermarket design of a turbo oil drain back,

you not only have to cover the hole in the valley pan cover, but the back of the intake as well.

i am not caffiene, deprived, but im also not in my right mind(ever)

but if you use a different system, both of these things have to be covered.
you do not want contaminates in these areas.

for proper nomenclature, the valley pan (aka lifter valley) is the part of the engine that is under the valley pan cover that houses the lifters, and provides strength for the block.
yes its in the oiling system

the valley pan cover isnt just a cover for the lifter valley, its also our intake gaskets.

said hole, could be plugged with a rubber grommet, which i would RTV to the cover if you choose to do so.

as far as the intake hole, if youre running a stock intake, you would need to come up with something that bolts to a stock style pedestal, or the N/A CDR.

hope this helps a bit, altho i could not be 100% correct.

 

[79jasper]

Pretty much what idioit said.
But punching holes is in the baffle below the cdr hole.
But you shouldn't need to.

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[OLDBULL8]

The CDR hole gets plugged with a blank grommett, that is a grommett without the hole in it. IIRC the grommett comes with a new Turbo.

If the Intake gasket has never been changed, IIRC, from 83 to 94 and a turbo is added, holes have to be punched in the baffle of the IG. The turbo oil, if that hole is used for that will not drain fast enough to crankcase. All the newer IG's have slots for drain back.

Nothing covers the IG (Valley Pan) except the intake manifold. The baffle previously mentioned is fastened to the underside of the "The Intake Gasket is the Valley Pan" Fel-Pro and Victor-Reinze have there own baffle configuration.

V-R VP comes with both grommett's as the pic shows.

Pic is a Victor- Reinze, don't have a pic of Fel-Pro.

 

[icanfixall]

Post number 4 covers it exactly.

 

[laserjock]

So the valley pan seals the intake and also seals the lifter valley from the outside world. I know the hole in the intake has to be plugged if I want any boost. Makes sense to have to plug the turbo oil drain/CDR hole. The other hole you mention "which leads to the back of the block, the one with the 3/8" drive." What is it's function? Is this just to drain water etc. that gets in the valley?


It seems like Bill and idioit are not quite in agreement but that could be semantics and my lack of comprehension.

 

[79jasper]

Bill is completely right. I left out the "new" on the valley pan.
Seems like semantics.

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[IDIoit]

The hole in the back with the 3/8 drive is nothing more than a drain for water, leaky oil and diesel.
You are correct

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[no mufflers]

When I installed the banks turbo I don't remember reading anything about punching holes in the bottom part of the valley pan.

 

[bike-maker]

Before I was turbo'd, I just used two of the expandable freeze plugs from the local parts store to block off the two holes.

 

[OLDBULL8]

When I installed the banks turbo I don't remember reading anything about punching holes in the bottom part of the valley pan.

That depends on where the turbo drain oil goes into. If the valley pan has been changed in recent yrs (since 94) no extra holes are needed, that is if you drain the turbo oil into where the CDR was.

 

[OLDBULL8]

Before I was turbo'd, I just used two of the expandable freeze plugs from the local parts store to block off the two holes.

Are you saying, you didn't have a CDR right behind the intake horn? You plugged up the other (drain hole) with a plug?

 

[bike-maker]

Yes, the hole in the back of the intake and the hole in the valley pan were both blocked off, and I ran a banks style vent - basically made a fitting that bolts on to the front of the timing cover with a 1" hose barb for the road draft tube.

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[no mufflers]

That depends on where the turbo drain oil goes into. If the valley pan has been changed in recent yrs (since 94) no extra holes are needed, that is if you drain the turbo oil into where the CDR was.

the drain for the turbo went in the back of the valley pan. before the engine reseal it had the factory valley pan. it now has a valley pan from the part store. I welded the hole for the CDR in the intake, since it was apart.

 

[OLDBULL8]

the drain for the turbo went in the back of the valley pan. before the engine reseal it had the factory valley pan. it now has a valley pan from the part store. I welded the hole for the CDR in the intake, since it was apart.

That's interesting, but don't quite understand where the oil return is going into now.