Adding a turbo to a 6.9/7.3

[DPinkston]

I'm not actually doing this, but a question came to mind recently concerning this. On the Cummins, the pumps are equipped to sense boost and can add or subtract fuel accordingly. The pumps on a 6. 9 or 7. 3 is not designed for such input. How do you work around this when adding a turbo? Do you simply turn the pump up and hope you can achieve a good balance?

The reason I ask is this: I have contemplated adding a turbo to my 684 IH tractor that has a D239 4cyl engine in it. This engine was available turboed (DT239) in one application that I am aware of, but I have yet to find any specific info on it. My current pump has no provision for boost sensing either.

Enlighten me please.

Danny

 

[Royal]

ATS in Salt Lahe city and Banks make a good kit for the 6. 9 and early 7. 3 Fords.

 

[bmoeller]

Hypermax is another place that has turbos for the 6. 9/7. 3L N/A IDI engines.



You can get piece that is called a "puff limiter" for the fuel injection pumps on the IDI engines. I think it was Hypermax that had it.



I don't have a turbo on my Ford, and haven't looked at any that were, so I don't know how they are setup for sure. I'd call one of the vendors, and ask them.

 

[DPinkston]

I have since discovered that Hypermax does offer an aneroid kit for the 6. 9/7. 3. I don't know if the factory turbo'ed 7. 3s had one or not. Like I said, not gonna do this, just figured if the Ford IDIs didn't use an AFC then I can get by on my tractor without one. I'll get a little more smoke until the turbo comes on. This is one of those "one of these days" projects that may never happen at all.

Danny

 

[Jeff H]

At the time were those motors desighned to handle a turbo. You think that would create extra heat. If they don't have piston cooling nozles in those motors you may burn up a piston?

 

[bmoeller]

The 6. 9/7. 3L engines DO have piston cooler nozzles. Turning up the fuel does create more heat. Being turbo'd though, the EGTs won't be as hot as they would if it was still non-turbo'd, for the given fuel settings.

 

[big jake 1]

I have an 86 F250 6. 9 with the Banks system.



The way we do it is to make sure we have the pyro and boost gauges installed, we make our limited power by openning up the air intakes, turning up the fuel at the IP and going to a larger exhaust, I run a 4 inch from the downpipe to 5 inch exhaust .



We drive by the gauges, if the EGTs get too high (+ 1200), we just back out of the throttle.



The 6. 9 came factory with a 21:1 compression ratio, so we can't add significant boost with out problems, we are limited to about 10 to 12 on the boost gauge.



at the track, we can usually make the 1/4 mile pass in a couple of days







big jake



THE FORD GUY Oo. Oo. Oo.

 

[BPonci]

I used to have a 85 f250 6. 9 that would push 21psi on a day to day basis. It was a hypermax turbo with water/meth inj. The charger was a special breed .