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RB Turbo or Upgraded turbo question RE: Do yours leak oil?
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08-24-2011, 09:17 AM | #67 | |
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Thanks in advance Rob. |
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08-24-2011, 09:50 AM | #68 |
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Imagine putting 2 water hoses together, but with a restrictor inbetween them. the pressures on each hose will be different.
If it's the seal, I would think revving while at neutral would show some indication, because CC pressures are low and oil pressure is dependent on rpm. Last edited by Joshboody; 08-24-2011 at 10:37 AM.. Reason: wording |
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08-24-2011, 10:22 AM | #69 | |
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The strange part is the car doesn't smoke during/after doing back to back pulls...its once you go into low RPM easy throttle territory that its noticed... Here's one scenario: 1) Cold morning start, no smoke 2) 10 minute off-boost easy morning drive to Starbucks, oil doesn't even get a chance to warm up to get the oil needle to start moving 3) Shut the car off, go into Starbucks, get the coffee 4) Turn the car back on after about 5 minutes it was off while getting coffee, I get smoke on startup 5) Go on the highway, do a bunch of high boost pulls, no smoke 6) Get off the highway, idle at a street light, no smoke...get on throttle to get going easy, notice smoke 7) drive easy over to the garage, park, car is idling, rev it multiple times, no smoke/burning smell After Rob fixed my first set on which the front turbo seal/thrust bearing went, put them back on the car the car immediately after had this issue but I thought it was some oil that was in the exhaust just burning off. To this day (3-4 months) it still burns/smokes as indicated above sometimes. Not too annoying as it doesn't happen all the time but when it does its enough to be pretty noticable through the rear windshield from the driver's seat... |
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08-24-2011, 10:36 AM | #70 |
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NO, I meant revving... high rpm, but while not in gear... neutral i meant to say. at this time oil pressures are high, but load, cc, and exhaust pressures are all low.
In my logic this would clearly indicate seals, but if it mainly happens at other times, you may need to look at other root cause(s). |
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08-24-2011, 10:42 AM | #71 | |
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at this time with the current units, i've tried that exact scenario and the car doesn't smoke under that particular condition (neutral, revving around 6k rpm, idle)... |
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08-24-2011, 10:49 AM | #72 |
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Dzenno your description sounds like blow seals. On my previous platform cars with blow turbo seal would only smoke after some time idling and low rpm driving. Sorry to say but I'm 99 percent sure your 2nd set is on its way out.
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08-24-2011, 10:55 AM | #73 | |
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I'll move the downpipes out of the way this weekend and check for in/out play on both of them like last time arggghhhh What about Joshboody's comment and my response to revving in neutral...it doesn't smoke at all when I do that...wouldn't that make it pretty much not a seal issue? Check this out, I've filmed it a while back with my GoPro on my rear bumper and sent this to Rob to see...the vid was taken after the car was already warmed up, I got off the highway and placed the cam on the bumper and went back on the highway: *** Some details on this vid: 1) Puff of smoke on throttle lift at 0:25sec, rear turbo 2) 1st WOT at 2:46sec 3) 2nd WOT at 3:20sec 4) 3rd WOT at 4:33sec 5) 4th WOT at 5:06sec Last edited by dzenno; 08-24-2011 at 11:09 AM.. |
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08-24-2011, 11:18 AM | #74 | |
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Raving in neutral could put enough pressure on the seal to reduce stop smoking? Get it to idle and smoke and then rev it. When u let off it should resemble seafoam.
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08-24-2011, 11:19 AM | #75 | |
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By the way, just checked with Rob, "the ones in the 1st set where the front turbo seal went, were not rebuilt, refurbished, or whatever, they were completely replaced brand new CHRAs. The original rear did appear to be in mint shape even tho the front was trashed. Replaced both to play safe. Had no idea what they had sustained while in service, for some of the time the rear must've been acting alone as no way was the front doing much work." Last edited by dzenno; 08-24-2011 at 11:32 AM.. |
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08-24-2011, 12:08 PM | #76 | |
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Not sure if you are even looking but if you wanted another car to do some testing on I'm willing to offer mine up and I am local to the St. Louis area. I was looking in to upgrading to your turbos in the near future and would love to help figure this issue out. |
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08-24-2011, 12:13 PM | #77 | |
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Last edited by dzenno; 08-24-2011 at 12:20 PM.. |
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08-24-2011, 02:27 PM | #78 |
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Rob, thanks for the thorough reply. For those reading this thread, Rob has really gone above and beyond in trying to help me fix the issue I am having. I received a call from him after dinner the other night. He made a similar call to my mechanic last night. In this day in age where most companies have an 800# with an annoying phone tree of sorts, it is refreshing to have someone that is do dedicated to the cause. Thank you.
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08-24-2011, 02:30 PM | #79 | |
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08-24-2011, 03:27 PM | #80 | |
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08-24-2011, 03:59 PM | #81 | |
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08-26-2011, 12:46 PM | #82 |
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Does anyone with catted downpipes and/or secondary cats have the same problems?
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08-26-2011, 12:56 PM | #83 |
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There is a good possibility they do, however, the cats will mask the smoke more than catless. I beleive Anemouse runs a completely stock exhaust with RB turbos, maybe he can chime in.
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08-26-2011, 01:27 PM | #84 |
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So the cats would just "hide" the problem, not prevent it from happening?
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08-26-2011, 01:54 PM | #85 |
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08-26-2011, 01:54 PM | #86 |
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It's hard to tell without taking a look at the turbos. Cats are designed to collect unburnt fuel and other fumes to prevent them from entering the atmosphere.
Someone would need to do testing to see if they are just masking the problem or if the restricted flow is actually preventing the issue. I am leaning towards just masking the problem since there are cars with "stock" setups burning oil. This shouldn't deter people from going to upgraded turbos. They are making awesome power without the loss of driveablity for the cost. These systems are still new to the market so they are going to go through some growing pains to get it down right. From what it sounds like Rob has been more than willing to replace anything that has an issue and to help with trouble shooting. |
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08-26-2011, 02:09 PM | #87 |
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The only issue with replacing things is labor costs involved in pulling turbos out to service them when shit goes sideways...pay to play lol...again, none of this may be related to the turbos themselves and we may just be looking at a byproduct of the overall environment
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08-26-2011, 02:10 PM | #88 |
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Not sure if this has any relevance but a guy I know on a big turbo (gt42r?) with a different platform needed to add an oil pump to his setup because he had drainage problems and was losing mass amounts of oil out the exhaust on low load.
I'm not claiming to be an expert just letting you know what he did to solve his problem, albeit being a different platform. |
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ar design, oil burning, oil catch can, rb turbos, turbos |
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