BNR Stage 4, Ebay Type RS BOV. Everything else stock. No boost, no blow off.
#1
Rotary nut for 15 years.
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BNR Stage 4, Ebay Type RS BOV. Everything else stock. No boost, no blow off.
So I recently bought a used BNR Stage 4 from a member here. Got it and it looks good, no abnormal shaft play, spins freely.
Problem #1
Could be a boost leak (got too dark to check) However on a test run the stock boost gauge will creep up to say where a stock S5 Turbo will go however I don't feel it pulling/boosting nor am I hearing it spool
Problem #2
I got an oil leak possibly from the return line or the CHRA is leaking somewhere as it's wet.
Problem #3
Found oil in the intercooler. Going to pull off the inlet side to see if it pooled up in there. If I was sold a crappy turbo I am going to be pissed.
Now on to the BOV... It's mounted on a steel pipe where the factory charge pipe went, vacuum line is (T)eed from the stock boost sensor and connected to the nipple on the UIM. Doesn't matter how loose or tight I turn it. It will not vent. I'm not hearing any compressor surge when I close the throttle. Does this Ebay knock off still have the dual springs like the original Greddy has?
When I had it out of the box it took some effort to push it open but we rigged up a pipe we can pressurize at work and it vented slowly probably because we couldn't dump a huge amount of air into it at once. So perhaps the spring is too tight?
#3
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Turbo needs a rebuild
Ditch the ebay crap and buy decent stuff. However, if you don't feel/hear the turbo, maybe there is no boost to vent off.. duhh :p
If you get the turbo up and running, you can get your engine rebuilt as soon as it hits full boost. (Considering you say everything is stock)
Ditch the ebay crap and buy decent stuff. However, if you don't feel/hear the turbo, maybe there is no boost to vent off.. duhh :p
If you get the turbo up and running, you can get your engine rebuilt as soon as it hits full boost. (Considering you say everything is stock)
#4
T2 Duo!
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I had a knockoff greddy type rs. That shitty company called Rotary Works gave it to me with their vmount kit. Nowhere in the description online did it say "knockoff". Damn valve kept sticking when I'd press it in by hand. Garbage. Be sure to test that yours is fully operational before you try to use it on your car.
#5
Rotary nut for 15 years.
Thread Starter
Turbo needs a rebuild
Ditch the ebay crap and buy decent stuff. However, if you don't feel/hear the turbo, maybe there is no boost to vent off.. duhh :p
If you get the turbo up and running, you can get your engine rebuilt as soon as it hits full boost. (Considering you say everything is stock)
Ditch the ebay crap and buy decent stuff. However, if you don't feel/hear the turbo, maybe there is no boost to vent off.. duhh :p
If you get the turbo up and running, you can get your engine rebuilt as soon as it hits full boost. (Considering you say everything is stock)
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#8
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Even at stock boost levels you will need to tune it
#10
Top Down, Boost Up
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Don't over-analyze.
It's an ebay knockoff part so who knows if it's opening under low vacuum and staying open under boost. Maybe high vacuum is the only time it decides to work. Besides, it's a 5 minute test of a questionable part. I'd sure as hell rather rule it out before taking the turbo off.
It's an ebay knockoff part so who knows if it's opening under low vacuum and staying open under boost. Maybe high vacuum is the only time it decides to work. Besides, it's a 5 minute test of a questionable part. I'd sure as hell rather rule it out before taking the turbo off.
#11
Rotary nut for 15 years.
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Don't over-analyze.
It's an ebay knockoff part so who knows if it's opening under low vacuum and staying open under boost. Maybe high vacuum is the only time it decides to work. Besides, it's a 5 minute test of a questionable part. I'd sure as hell rather rule it out before taking the turbo off.
It's an ebay knockoff part so who knows if it's opening under low vacuum and staying open under boost. Maybe high vacuum is the only time it decides to work. Besides, it's a 5 minute test of a questionable part. I'd sure as hell rather rule it out before taking the turbo off.
#12
Rotary nut for 15 years.
Thread Starter
Here is what I came up with since I can't seem to get much besides criticism about when I'm going to blow my motor up. The BNR needs an oil restriction due to my higher oil pressure. My BOV is opening too soon venting because I pulled one of the dual springs out. The wastegate is fine. Tested that by shortening the rod as far as possible then finally clamping it off.
Blowby is due to the BOV leaking. Oil is possibly because of the higher oil pressure I have plus no restrictor before the turbo.
Blowby is due to the BOV leaking. Oil is possibly because of the higher oil pressure I have plus no restrictor before the turbo.
#13
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Contact BNR and ask about the oil restrictor.Bryan will gladly answer anything you throw at him about his product.
I didn't run one on my Stage 3.
I didn't run one on my Stage 3.
#17
Rotary nut for 15 years.
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Then explain while this is literally puking oil from the CHRA into the compressor? I now have a car that I can't drive nor even think about smogging. The car is sitting under a cover until I have enough cash to buy yet another turbocharger.
Last edited by -RotorDemon-; 12-13-12 at 03:55 AM.
#19
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ill trade you straight out for a stock 87 t2 turbo (i suppose it COULD be an s5 but im fairly certain its an s4). you pay shipping to me on yours and ill pay shipping to you on mine.
#21
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i have no clue why its doing that? maybe you have something installed incorrectly. im telling you i pulled this off my car running with not one problem at all! rebuild should run $250-$350 as this was rebuilt already....sorry it is doing that though i wish you the best of luck
#22
Rotary nut for 15 years.
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i have no clue why its doing that? maybe you have something installed incorrectly. im telling you i pulled this off my car running with not one problem at all! rebuild should run $250-$350 as this was rebuilt already....sorry it is doing that though i wish you the best of luck
Again, I apologize.
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