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EBPV gut, and turbo pedestal upgrade. EGT question. with pics

47268 Views 39 Replies 8 Participants Last post by  copracr
3
I'm gutting my EBPV and replacing my pedestal with a non ebpv model.

While gutting the ebpv I was thinking, would it be a good location for an egt sending unit?

I've never installed an egt sensor, so I don't know how large they are, or what the recommended location is. I think I've heard of the DP being a good spot for one. But since I have a hole to fill in the EBPV, could I stick a sending unit in there?

Or is this location not going to provide an accurate reading?

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Good gravy. For your sake I hope it works :thumb:
I never researched which oil port was for what......Cool, hope nothing leaks.....

Now that I saw yours, I may just cut the acuator housing off of my xtra pedistol
Good gravy. For your sake I hope it works :thumb:
:hehe: :thumb:

Thanks for the vote of confidence :wink[3]:

It's all low pressure oil at these points, and I'm pretty confident in the performance of this product. It'll never bee seen again so I didn't see the need to make it pretty.

Next time I have this pedestal in my hand, it'll be when I'm tossing it and putting in a bigger turbo.:scuffy

I'll be watching this repair closely to insure it doesn't "pop" out on me.

Thanks for following the thread.
Now I need to get some pipe plugs and a tap, what size are ppl using for the butterfly, 1/2" right?
I cant recall what size it is....I took the EBPV housing to Orileys and started sizing plugs.
I think you just put a soft plug (freeze plug) in it.
I know this is an old thread, but I am new to the powerstroke community and have been doing a lot of searching. I figure when questions I have come up most of them will be applied to older threads.

I am considering doing the EBPV gut and pedestal trim mod. I understand the pressurized oil port into the cavity and the drainback port. The EBP solenoid activates that flow based off of what the EBP sensor tells it. I might even think of a way to pull the EBP solenoid and plug that hole, also.

What concerns me most is the trough type port mentioned in the quote below. Since that end of the EPBV cavity is not sealed, I am wondering if it is a makeshift vent for the oil passages (kind of like a crankcase vent). I am worried that plugging this hole could create some pressure in the passages and make oil leak somewhere it shouldn't.

Any thoughts?

Plus, have you had any problems with this mod, since it has been over a year?

YES :thumb:
The turbo needs oil for sure, but it doesn't get it from the EBPV actuator cavity.

On the snap side of the cavity there are 2 ports, one is for incoming pressurized oil, and the one on the bottom of the cavity is for drain back when the EBPV is de-energized. Then there is the trough typy cavity at the rear of the ebpv cavity, I can only guess at what this one is for. The trough cavity exposes the drain back from the turbo. I don't know why it would be open to the plunger side of the EBPV, which is not sealed. This explains all the crusty oil build up on the shaft of the plunger, and then also all along that side of the turbo pedestal.

So some one please slap me if I got all this wrong :punish2:

I'm pretty sure I'm ok to seal all these up and not affect the turbo oil flow. At any rate, it's to late to turn back now. I'm going to putty up these holes and if it turns out I'm wrong, I'll buy a new pedestal :dunno:
egt can bw more than 100 degrees colder post turbo. gutting the pedestal is easy. plug the hole in the ebpv with a 3/4 inch freeze plug. i got mine for 50 cents at carquest
I just did the same thing, gutted the pedestal, and I had it WELDED up, by a good aluminum welder...there are 4 passages :

1 - the solenoid (vertical) shaft - weld it closed (remove nut - pull solenoid out)
2 - the long sloted area over the drain-back passage - weld it up, being careful not restrict it
3 - the tiny round hole - this is a PRESSURE port into the cylinder cavity that you sawzalled off - weld it shut.
4 - small rectangular hole just above pressure port - weld it shut.

that will, (and in fact DID it for me) do it for you....no leaks and LOTS more room to get at the pesky passenger's-side rear pedestal bolt. :D
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Nice, that is what I was planning on doing. How long have you been running it? I still wonder about welding up the slotted area. Like I stated in my first post, I wonder if it serves at a make shift vent.??? If so, you will have some pressure build up and have some leaks probably around the turbo.

I just did the same thing, gutted the pedestal, and I had it WELDED up, by a good aluminum welder...there are 4 passages :

1 - the solenoid (vertical) shaft - weld it closed (remove nut - pull solenoid out)
2 - the long sloted area over the drain-back passage - weld it up, being careful not restrict it
3 - the tiny round hole - this is a PRESSURE port into the cylinder cavity that you sawzalled off - weld it shut.
4 - small rectangular hole just above pressure port - weld it shut.

that will, (and in fact DID it for me) do it for you....no leaks and LOTS more room to get at the pesky passenger's-side rear pedestal bolt. :D
nope, it's not a vent, it's the RETURN side of the cylinder-oil.....it just drains back into the engine...and it is why the cylinder leaks like a biotch when the seal on the end of the rod goes out.....
Aha, makes sense. Thanks for your help.
As I think about this more and more, I think about the EBP system as a whole. Since we are taking away the EBP actuator and regulator there is no need for the EBP sensor that is located up by the HPOP resovoir. Not needing that means that we can pull the tube that goes to the right exhaust manifold and plug that hole also.

But, will unplugging the EBP regulator and EBP sensor give a CEL?
I took off the line and sensor ( and sawed off the sensor mount....mounted the fuel pressure regulator to the bracket when I did e-fuel) and sent off and got a "Dongle" to plug into the sensor plug....it tells the 'puter you have 10-11 lbs backpressure all the time....no more probs.......

http://www.spdiesel.com/exhaust_backpressure.htm
Sweet, that is exactly what I was looking for.
I took off the line and sensor ( and sawed off the sensor mount....mounted the fuel pressure regulator to the bracket when I did e-fuel) and sent off and got a "Dongle" to plug into the sensor plug....it tells the 'puter you have 10-11 lbs backpressure all the time....no more probs.......

http://www.spdiesel.com/exhaust_backpressure.htm
I've been sitting here at work looking at threads all day about this and one of them explained that the PCM used EBP readings to help determine load. That would modify shift schedules and fueling. I'll try and get at that thread cause it was on one of those diesel programmer forums and looked reputable (but dont take this as first hand testimony cause he could be smoking).

Here it is:
http://forum.gopowerhungry.com/1999-2003-7-3l-power-stroke-diesel/6856-exhaust-bp-sensor.html
PHP has a great reputation so they're as likely as anyone to know.
I know this is an old thread, but I am new to the powerstroke community and have been doing a lot of searching. I figure when questions I have come up most of them will be applied to older threads.

I am considering doing the EBPV gut and pedestal trim mod. I understand the pressurized oil port into the cavity and the drainback port. The EBP solenoid activates that flow based off of what the EBP sensor tells it. I might even think of a way to pull the EBP solenoid and plug that hole, also.

What concerns me most is the trough type port mentioned in the quote below. Since that end of the EPBV cavity is not sealed, I am wondering if it is a makeshift vent for the oil passages (kind of like a crankcase vent). I am worried that plugging this hole could create some pressure in the passages and make oil leak somewhere it shouldn't.

Any thoughts?

Plus, have you had any problems with this mod, since it has been over a year?

:icon_ford: For the record... I'm still free and clear with ZERO turbo or oil leaking issues :woot: Looks like it's working out just fine.
Praise God
if you go back and re-read that article by Bill Cohron, you'll find that he was talking about a 6.0 liter ford, not a 7.3.... :

"On a 6.0L, a clogged EBP Sensor/Tube will have a SIGNIFICANT effect on performance when you use a Non-Inferred EBP strategy. On a 7.3L, an EBP sensor can have a similar effect as the ECM uses EBP as a means to determine calculations for Load (which handle shifting) and for fuel control. While the truck will run fine with an EBP sensor that is clogged, it is not going to be operating at peak. "

when you add a modern chip, I believe the chip changes that function, but I'm not sure of that.....

I've been running a Dongle for a couple years with no problems...... I only get about 11 mpg, but I'm towing 20,000 combined gross.....
For an unknown amount of time I have been running with mine completely blocked. And getting 18-25mpg, lol. He does say it will have an impact on the 7.3l, but it doesn't seem to be a big one. Maybe the auto trans guys might notice a difference with shift scheduling??
I thought the MAP is what determines load for the PCM.
I thought the MAP is what determines load for the PCM.
The MAP and lots of other things.
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