Help Needed turbo ped / oil slick

[RSG]

I am finally getting to replacing my turbo pedestal with a new one that doesn't have the EBPV linkage. I put in a 4" Banks DP last summer & have nothing but leaks since then and the suspect was the flopping EBPV linkage on the pedestal. Anyway, I had the pedestal O-rings replaced in September and all was peachy until suddenly last week I'd leave a big streak of oil wherever I parked. So I decided it was time to replace the pedestal based on earlier advice.

So it's out tonight. I can't for certain pinpoint a leak, but what is odd to me is that there is evidence of oil leakage between the compressor and the Banks downpipe, and the other end of the downpipe was really oiled up. This is the exhaust system...would a EBPV linkage flopping be able to shunt oil from the turbo and into the exhaust somehow???

I confess I don't understand the oil system on the turbo.

While I got it apart, I'm wondering what else to do. I have a new waste gate actuator, new orings for the pedestal, will probably replace the plugs on the frame rail if I can figure out where that is, probably the boots since they look awful and I'm putting a new CCV system on too...what else? As much as a pain the arse as it was to get that rear-most v-clamp loose off the turbo, I don't wanna do this again for a while!!!

Thanks!

 

[Tail_Gunner]

If you have oil coming from the v-band clamp where the down pipe mounts to the turbo, then it coming from or through the turbo's turbine/exhaust housing. You'll have to determine if the oil is coming from the engine or the turbo itself. I went down this same road myself about a year ago.

In either case, you'll need to pull the turbo. Once it's off, look at the baby's butt ("Y" collector) where the exhaust up-pipes feed into the turbine/exhaust housing of the turbo. If there's oil inside the baby's butt passages, that ain't good. It's coming out of the cylinders, traveling through the exhaust manifold & up-pipes up to the turbo.

If the baby's butt is dry, then look at the exhaust side of the turbo. Look inside of the baby' butt mating flange for oil. Then look inside the down pipe flange and verify the presence of oil there. Once you've confirmed the source of oil as the turbo, then you need to get the center section rebuilt. Your seals and/or bearings need replacement.

There are several options from here, from a "do-it-yourself" kit to rebuild your center section, to a rebuilt stock style turbo, to a aftermarket high performance turbo. I've dealt with Bean's Diesel Performance several times in the past with several turbo related issues. Give him a call, he'll get you set up with whatever option you pick. I gotta give him a big .

 

[RSG]

In either case, you'll need to pull the turbo. Once it's off, look at the baby's butt ("Y" collector) where the exhaust up-pipes feed into the turbine/exhaust housing of the turbo. If there's oil inside the baby's butt passages, that ain't good. It's coming out of the cylinders, traveling through the exhaust manifold & up-pipes up to the turbo.

If the baby's butt is dry, then look at the exhaust side of the turbo. Look inside of the baby' butt mating flange for oil. Then look inside the down pipe flange and verify the presence of oil there. Once you've confirmed the source of oil as the turbo, then you need to get the center section rebuilt. Your seals and/or bearings need replacement.

Thanks TG, I think (odd to thank somebody who advise me to assess a baby's arse!

Seriously, I pulled it last night. I don't think the baby butt was wet. The downpipe side was for sure oily, and I believe the mating flange was a bit moist too. The noticeable aspect is where the Banks downpipe bolts to turbine (where the EBPV was originally), there is a trace of oil seeping out. So I think it is from the turbo. I will get some pix.

I was thinking that since the pedestal had the EBPV linkage flopping about, maybe by simply replacing the pedestal I'm ok. Or is that too optimistic? Should I proceed with a rebuild just to be safe. Like I said, I didn't enjoy removing it at all. I ordered a WW and new boots and an AIH plug today.

 

[RSG]

update

Tonight I looked it all over and determined that there's been a leak of oil between the downpipe and the turbine housing, and TailGunner, FYI the "baby's butt" is dry! Probably a seal is bad in the turbo...debating whether to rebuild myself or get a new one. $125 rebuild kit; $650-$750 for remanufactured unit...

As I get to putting this back together...is there a list of gaskets, seals, etc that I should replace? I was really surprised that there was not a gasket between the downpipe and the turbine housing, or the "baby butt" and the compressor section. Just 1 big o-ring on the compressor outlet side?

I do have new boots, a hp cross-over line, and an AIH delete plug coming. Also got most of the Racor CCV4500 installed, except I lost my 5/16 bar stock "plug remover" and got to go make another. It fits up behind the AFE housing, pix will be forthcoming.

thanks, and happy thanksgiving!

 

[Tail_Gunner]

Thanks TG, I think (odd to thank somebody who advise me to assess a baby's arse!

Seriously, I pulled it last night. I don't think the baby butt was wet. The downpipe side was for sure oily, and I believe the mating flange was a bit moist too. The noticeable aspect is where the Banks downpipe bolts to turbine (where the EBPV was originally), there is a trace of oil seeping out. So I think it is from the turbo. I will get some pix.

I was thinking that since the pedestal had the EBPV linkage flopping about, maybe by simply replacing the pedestal I'm ok. Or is that too optimistic? Should I proceed with a rebuild just to be safe. Like I said, I didn't enjoy removing it at all. I ordered a WW and new boots and an AIH plug today.

There isn't any way that oil from the EBPV actuator could get inside the exhaust housing to leak out the downpipe clamp. So any oil that is coming from the v-band clamp has to be coming from the turbo or through the turbo from the engine.

The EBPV actuator can be "eliminated" to prevent future leaks or the pedestal can be replaced with a non-EBPV version.

To eliminate the actuator, you can cut off the end of the rod and tap the hole with a NPT tap. Then just plug the hole with a pipe thread plug. Make sure you unplug the wire that goes to the EBPV and leave it disconnected.

 

[RSG]

I have put a new pedestal on, w/o EBPV. So if the oil isn't coming from there I guess it's the turbo needing a overhaul. Pix put here: http://www.superdutydiesel.com/forums/vbpicgallery.php?do=view&g=807

 

[RSG]

Re-manned turbo is coming by end of week. I sprung for new boots, and HP oil crossover (while I'm in there). Will take some more pix when done.

 

[Tail_Gunner]

Good to hear you figured out a solution.

Where'd you get your turbo from?

 

[RSG]

TG, I went with Riley (a sponsor of this site) and it should arrive in a few days. Decided to stay stock, as I priced out several others and they were all within $100 after taxes, shipping, etc. ... or add $1k for something bigger/better!!! I got a wicked wheel with it; plan to install the turbomaster wastegate controller while it's out. Got a bunch of questions on the install that I'll post up separately.

tonight I got the HP x-over line installed and the new boots figured out; I installed the AIH delete plug too. I have 2 International Frame Rail plugs that I'm still trying to find a home for...also worked on the Racor CCV kit (from Diesel Innovations) and learned that the block 3/8" NPT (?) threads don't match with the check valve which is maybe 1/4" npt?? more scrounging!

Thanks!