BearKiller

I am soon removing the Dodge-specific exhaust manifold in lieu of a standard Cummins manifold, in order to gain miles of space between my A/C evaporator box and the turbo exhaust housing.

When this is accomplished, I will need to re-fabricate the oil drain-back tube.

As currently mounted in it's standard Dodge location, I can barely see the thing.

How is it connected to the engine at the lower end ??

What specific materials, tubing, hose, and such, will I need have on hand to accomplish re-designing the drain-back ??

What diameters, I.D. or O.D. ??

Many thanks.

JAyers

You can use either steel tubing or just a good quality oil resistant hose. I believe it is 7/8's id. I use parker hose for my twin setups.

CaptainChrysler

Yeah it is 7/8" I.D. hose, which I found to be somewhat elusive. The tubing would be 7/8" O.D. You should be able to get the corresponding drain for the exhaust manifold. Or you can just cut it in half and connect it back together with the hose. Silicone hose would probably be recommended, that's what is O.E.M.

At the block there is nipple the drain clamps onto.

Also the bolt pattern for the bottom of the turbo is somewhat universal, and you can get those flexible drain tubes. I have one of from some form of a Volvo on the '96 truck.

Billut

about the Cummins manifold: if it gives you more clearance, that would make installing a He351 a little easier, wouldn't it?

BearKiller

Is this nipple just a standard NPT/pipe-thread hose-nipple ??


I guess I better round up some 7/8 hose to have on hand.

Thanks everyone so far.

BearKiller

Would this be a good choice ?? :


http://www.discounthydraulichose.com..._p/r5-hose.htm


This would sure be cute, but will it work ?? :


http://www.discounthydraulichose.com...p/r14-hose.htm


Thanks.

dodgenstein

The nipple is press fit into the block.

bgilbert

Here's where I bought my 7/8's hose: http://www.boostcontroller.com/index...category%3D154

Billut

BearKiller: besides the gain in space, are there any other advantages to replacing the manifold? Reason I ask is: does the Cummins manifold provide a different angle for mounting the turbo, or is it the same?

BearKiller

Here is an idea of the end result :



http://rides.webshots.com/photo/2824...01950171VXyaGs



I don't know if a Dodge hood would close on such a set-up.

Nothing a sawzall wouldn't fix, though.

BearKiller

That says it's heater-hose; I assume it works fine for hot oil ??

I bet those guys will also have the boots that I will be needing = I can slay two avians with one stone.


Thanks for pointing me in that direction.

bgilbert

It's silicone heater hose, which is what Cummins OEM used. Some guys on CompD sent me there when I was looking for the odd ball 7/8's hose for my twins. You can always make your own 'nipple' by cutting the Dodge oil drain 2-3" or so down from the gasket flange under the turbo. Then a length of 7/8's hose down to the nipple in the block.

Here is another way to do it: http://sourceautomotive.biz/flexibleturbooildrain.aspx. It's a Detroit part but it might be hard to source from anyone other than Source.

BearKiller

I like that idea.

I guess I will, for now, just get a couple feet of the silicone hose and see if that works out.

If that plan fails, then I will get that flexible unit.



I have searched and searched in vain for just a plain old Cummins drain-back like would have been on the type manifold that I am using.

The problem is that Cummins never die, so are seldom parted out.

I was real fortunate to even get the manifold.

Thanks.

ZSkibo

Your truck hood will definitely NOT clear that setup. I'm not sure that even a 4" cowl hood would work there. Why do you want the turbo up so high?

92smokin blacky

I had to use a flex tube drain with this aurora 5000. It wasn't quite long enough so i had to get some 3/4" oil resistant all purpose hose at a local shop. It was a very tight fit but after heatin up the both ends of the hose and with a propane torch and coverin it in vasoline, it went on with a lot of pushing. 7/8" hose is harder to find, especially in a small town when you need it quick.