Low Boost High EGT's
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Joined: Jan 2008
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From: Rochdale MA
Low Boost High EGT's
This past weekend we pulled my turbo and installed a WW. We also deleted the EBPV. We removed the plunger, and plugged the hole. The "flapper" was welded in the open position. The sensor is unplugged from the pedistal base as well.
Since this I have had issues with low boost, I did find one IC boot loose and took care of that. My EGT's are much higher than before when i romp on it. It seemed to be ok today coming back from NC for a bit but then started climbing after a bit. I let the truck cool down and then took it for a ride. I had it in 120 hoping to blow the boot off that is causing the problem. I hit 15 psi and my EGT's were at 1600* (Honestly) I let off as soon as I saw the guage sweep tht far. This was all within a few seconds.
I made up a leak detector and will check that tommorow, I also checked the upipes and they care clean as a whistle. Any other ideas as to what else to check where as my brain is like jello due to sleep deprivation.
Since this I have had issues with low boost, I did find one IC boot loose and took care of that. My EGT's are much higher than before when i romp on it. It seemed to be ok today coming back from NC for a bit but then started climbing after a bit. I let the truck cool down and then took it for a ride. I had it in 120 hoping to blow the boot off that is causing the problem. I hit 15 psi and my EGT's were at 1600* (Honestly) I let off as soon as I saw the guage sweep tht far. This was all within a few seconds.
I made up a leak detector and will check that tommorow, I also checked the upipes and they care clean as a whistle. Any other ideas as to what else to check where as my brain is like jello due to sleep deprivation.
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Joined: Jan 2008
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From: Rochdale MA
I checked that first and the weld is still there. Roland welded the arm of the actuator to the body of the exhast housing so that should be all set there
I already responded to the pm
I already responded to the pm
Post Fiend
Joined: Dec 2008
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From: Wallingford, CT
Jim if you want to drive down here to take a look at it my shop is always open to you. No guarantees I'll have all the goofy metric stuff needed to do a turbo, but at least there's good light and a roof over head in case it rains.
And there's 3 welders here that you're welcome to use.
Edit: I guess you won't need a welder. Many many posts beat me to it.
And there's 3 welders here that you're welcome to use.
Edit: I guess you won't need a welder. Many many posts beat me to it.
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Joined: Jan 2009
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From: Suffolk, VA
Throwing this out there, wastegate opening up too soon and too far? I think the BB clamp is either off or on from what I saw.
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Post Fiend
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From: 21791
I think the turbine inlet dowel in the seperator of the up pipe collector didnt seat into the turbine housing where the dowel goes. Did you line the collector to the back of the turbine, clamp it snug before seating it down on the pedestal? The up pipes will always look clean here. I drove to BTS and to smokin 07 like this and man did i get some chitty mileage.
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From: NW Arkansas
hmm.. i'm sorry to hear about the issues Jim.
I would say pull the turbo if you got the time and then see if reinstalling it to the BB might help.
I helped a guy with a turbo swap a few weeks back.. he uppipes had what appeared to be a small leak before turbo removal.. and after the swap it somehow multiplied into a giant leak and we had to pull the turbo again and do uppipes.. I hope this is not the case
Good luck none the less
I would say pull the turbo if you got the time and then see if reinstalling it to the BB might help.
I helped a guy with a turbo swap a few weeks back.. he uppipes had what appeared to be a small leak before turbo removal.. and after the swap it somehow multiplied into a giant leak and we had to pull the turbo again and do uppipes.. I hope this is not the case
Good luck none the less
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Joined: Jan 2008
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From: Rochdale MA
The butterfly was welded in the open postion Dan. Roland checked that.
That is exactly how we did the up pipe collector Kris. I actually took a white rag and wiped around the up pipes to check for soot. My mileage was really good though.
Everything looks to be ok The truck runs great until I romp it just the low boost and when I romp it hight EGT's
If the waste gate opens to soon will that cause the hight EGT's maybe I have two issues a boost leak and someting else.
That is exactly how we did the up pipe collector Kris. I actually took a white rag and wiped around the up pipes to check for soot. My mileage was really good though.
Everything looks to be ok The truck runs great until I romp it just the low boost and when I romp it hight EGT's
If the waste gate opens to soon will that cause the hight EGT's maybe I have two issues a boost leak and someting else.
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Joined: Jan 2008
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From: Rochdale MA
I might have my terms confused Kris. I thought the turbo bolted via the clamp to the babys butt and in front of the turbo on the "air side" was the spider. I'm so damn tired I can t even type straight. (3rd try)
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From: At Work!
Jim, I just did this same upgrade to my turbo about last weekend and it was a bit... by myself! But I ( instead of leaving the butterfly in there I drilled out the two spot welds on the butterfly and pulled the entire valve out of the turbo and then nickel plate welded the hole full)remember this is cast and maybe you have some cracks in your turbo now do to the heat generated from a wirefeed or a stick weld? just trying to give you a theory also I have zero restrictions now because my valve is completly removed! also double check that pain in the @#@ Band clamp in the back, maybe you don't have it in the notch correctly but I doubt that because there was no room for erorr when I done mine! good luck