TTD's 1985 6.9 build thread

[THECACKLER]

You'll need a pump to take the drain oil from the Turbo back to the Crankcase. I don't know if you ran an electric fuel pump and retrofitted the Factory Lift Pump to pump hot oil, if it can handle it or not, but it was something I considered. I thought about it in terms of running the Turbo Drain oil through an oil cooler before dropping it back into the 1/4 NPT ports in the ends of the heads.

 

[towtruckdave]

You'll need a pump to take the drain oil from the Turbo back to the Crankcase. I don't know if you ran an electric fuel pump and retrofitted the Factory Lift Pump to pump hot oil, if it can handle it or not, but it was something I considered. I thought about it in terms of running the Turbo Drain oil through an oil cooler before dropping it back into the 1/4 NPT ports in the ends of the heads.

What happens when you do not?

 

[THECACKLER]

You won't flow enough oil out of the bearings and it will be pushed into the Turbines and either into the engine or out the exhaust. Plus you will be loosing oil. I have seen mods where the solution was to install an electric fuel pump then put a 1/2 or 3/4" NPT fitting in a fuel pump block off plate to serve as a drain back fitting.

 

[towtruckdave]

Thanks, I understand. So that is why people mount the turbo above the engine.

It is so the oil drains right out of the turbo before it seeps past the bushings?

Should the pressure side of the oil come from the top or bottom?

 

[GOOSE]

It should be higher than the oil pan. Can't you run an oil collector and drain it back into the oil pan with a 3/4 inch hose? A system like that may allow gravity to do the job once again.

Yes, I have seen that Utube clip and many more like it. Makes me wanna jump on my International project mentioned in my sig. Detroits make me salivate. They are my favorite thing that GM ever came up with. Nothing like a Brigadier with a screamin' Jimmy. Sorry to veer off topic.

 

[Brutis]

Is/when will the truck be running? Have you figured out the oil drain for the turbo? I'd like to see that setup. Someday I'd like to put my turbo somewhere else, b/c I have always like the space and accessibility of stuff up top...until I installed my turbo.

 

[Joejohn]

http://www.rbracing-rsr.com/oilsystems.htm

These are the folks that helped me do what your talking about. That is my mustang on the page. It explains in detail the turbo oil scavenging set-up. I used it on my car with good results.

Now with that said.....I think i remember someone using the stock 7.3L fuel pick-up pump for oil return. Im not sure how well that would work though.

 

[towtruckdave]

I finally got time to finish building my 6.9.

Next I will be installing it in my truck. Then, it will be time to have some fun with my turbo. The turbo is off a dt530.

In the meanwhile, it will be nice to have my pickup back in action.

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[OLDBULL8]

Where is the oil return from the turbo? It has to be a free flow to the oil pan, or like they say about using a pump. If you run it into the valley pan CDR hole be sure and punch holes in the oil deflector on the underside of the valley pan, otherwise the oil won't drain fast enough.

A little secret about head gaskets. Spray them with hair spray both sides, three or four coats. When the engine gets hot they will become glued like you can't believe. A tip from a guy that builds race engines. Don't make any difference what fragrance you use.

Damn, how did you come up with those colors?

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Really nice looking you got there.

 

[towtruckdave]

I am going to use one of those RB Racing Electric Spur Gear Oil Feed and Scavenge Pumps, like Joejohn suggested.

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http://www.rbracing-rsr.com/oilsystems.htm

I am really leaning toward a stand alone a 3 quart oiling system with a big oil cooler for oiling the turbo. I could run some nice racing oil and a 5 micron filter. That hairdryer will be in turbo heaven.

 

[towtruckdave]

Thanks, That is VHT bright red from Summit.

 

[GOOSE]

How's it coming along, Dave? I think these motors were supposed to be red, IH red. looks sweet.

 

[Brutis]

Wow, that looks really nice! Is that work of art producing power yet?

 

[papastruck]

I'm falling off the edge of my chair here, waiting for updates with more pics!

 

[GOOSE]

Where is Dave. Feet stomping, chains ckanking, every body chanting: TOW TRUCK DAVE, TOW TRUCK DAVE, TOW TRUCK DAVE.