Slight oil smoke (?) at idle... working the bugs out..
04-23-2013, 04:54 PM
#21
LMAO, this whole crank case vent thing is a new line for turbo companies I guess. In the import market I had a friend get the same line when his turbo started smoking and pushing oil out of both the exhaust and the intake side (which they said should not happen, but it was!). I really think there is just a quality control issue with some companies and they get these lines given to them to try to shrud it off in hopes that the customer will just go away or think it was something they did.
Also had a customer with a brand new Precision journal bearing that smoked from day one. Tried a different turbo in its spot, no issues. Sent it off to Precision for a rebuild, get it back, same thing. Despite all this he decided to get a BB Precision and that one with a restrictor had zero issues. Not sure what it is with their journal bearing stuff, but this seems to be a regular theme.
Also had a customer with a brand new Precision journal bearing that smoked from day one. Tried a different turbo in its spot, no issues. Sent it off to Precision for a rebuild, get it back, same thing. Despite all this he decided to get a BB Precision and that one with a restrictor had zero issues. Not sure what it is with their journal bearing stuff, but this seems to be a regular theme.
04-23-2013, 05:08 PM
#22
Man, do a search, seems there are issues with Precisions smoking coming up daily. I have had 2 customers that despite my thoughts chose to run them. Both had smoking issues brand new out of the box. Now both also had higher volume oil pumps, so maybe that has something to do with it.
But one we switched (as stated above) to a BB Precision with a restrictor and no further issues. The other he sold off after getting it sent back to Precision and put a Borg in the EXACT SAME SET UP with the same drain, same feed, no restrictor and had zero smoking issues. Just my experience with them. I have since gone with the Borg Warner turbos and have not experienced these sorts of issues.
But one we switched (as stated above) to a BB Precision with a restrictor and no further issues. The other he sold off after getting it sent back to Precision and put a Borg in the EXACT SAME SET UP with the same drain, same feed, no restrictor and had zero smoking issues. Just my experience with them. I have since gone with the Borg Warner turbos and have not experienced these sorts of issues.
04-23-2013, 06:58 PM
#24
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Okay when I purchased my turbos, the builders told me and I quote "Oil pressure for these turbos needs to be above 30 and no higher than 60, If you have more than 60 a restrictor is required". I have custom turbos using Garrett centers. Since you have 80 on start up I believe that may be the cause of your leakage, I would try restrictors, buy a few different sizes. See what sizes allow you to run without leakage.. You want the biggest size restrictor on it that won't allow leakage.
I believe since you have both leaking that that may be the problem.
I believe since you have both leaking that that may be the problem.
04-23-2013, 07:38 PM
#25
Okay when I purchased my turbos, the builders told me and I quote "Oil pressure for these turbos needs to be above 30 and no higher than 60, If you have more than 60 a restrictor is required". I have custom turbos using Garrett centers. Since you have 80 on start up I believe that may be the cause of your leakage, I would try restrictors, buy a few different sizes. See what sizes allow you to run without leakage.. You want the biggest size restrictor on it that won't allow leakage.
I believe since you have both leaking that that may be the problem.
I believe since you have both leaking that that may be the problem.
04-23-2013, 07:47 PM
#26
Man, do a search, seems there are issues with Precisions smoking coming up daily. I have had 2 customers that despite my thoughts chose to run them. Both had smoking issues brand new out of the box. Now both also had higher volume oil pumps, so maybe that has something to do with it.
But one we switched (as stated above) to a BB Precision with a restrictor and no further issues. The other he sold off after getting it sent back to Precision and put a Borg in the EXACT SAME SET UP with the same drain, same feed, no restrictor and had zero smoking issues. Just my experience with them. I have since gone with the Borg Warner turbos and have not experienced these sorts of issues.
But one we switched (as stated above) to a BB Precision with a restrictor and no further issues. The other he sold off after getting it sent back to Precision and put a Borg in the EXACT SAME SET UP with the same drain, same feed, no restrictor and had zero smoking issues. Just my experience with them. I have since gone with the Borg Warner turbos and have not experienced these sorts of issues.
04-23-2013, 08:01 PM
#27
Ok. Precisions are now garbage. I ran a 76gts for a year, no issues, my friend ran his for 4 years with no issues. 2 local guys have evos that are 2 of the fastest in the country, one runs my exact same turbo, the other runs a 6765. All garbage. Got it.
Fact is, i have a kit built around these turbos. I have 2 turbos that are brand new and as of today have about 25 min run time. Apparently they BOTH went bad instantly. Meanwhile people run ebay $200 chinese turbos, guess i should have went with them. So guess im stuck/screwed.
Fact is, i have a kit built around these turbos. I have 2 turbos that are brand new and as of today have about 25 min run time. Apparently they BOTH went bad instantly. Meanwhile people run ebay $200 chinese turbos, guess i should have went with them. So guess im stuck/screwed.
04-23-2013, 08:10 PM
#29
Literally EVERYTHING is uncapped including the dipstick and oil fill cap. I never had a problem with my 7675 draining. What would cause the ventilation to all of a sudden be insufficient? Nothing with the engine has been touched since last year.
04-23-2013, 08:58 PM
#31
Wasn't trying to be a hater just have been here a while and seen stuff like this....same problems by some of these guys as you.
https://ls1tech.com/forums/forced-in...-now-what.html
https://ls1tech.com/forums/forced-in...o-rubbish.html
https://ls1tech.com/forums/forced-in...o-thieves.html
https://ls1tech.com/forums/forced-in...-now-what.html
https://ls1tech.com/forums/forced-in...o-rubbish.html
https://ls1tech.com/forums/forced-in...o-thieves.html
04-23-2013, 09:07 PM
#32
If it was one turbo doing it, then i would be suspicious, but both doing the exact same thing lends itself to being something else, wouldn't you say?
Besides, what other turbos would be a direct fit for my kit? Now that would be a nightmare..
Besides, what other turbos would be a direct fit for my kit? Now that would be a nightmare..
04-23-2013, 09:10 PM
#33
Take this guys advice. . . TRY A RESTRICTOR. You have higher than normal oil pressure and it could be passing the seals on the turbo. Try the restrictor and see if it goes away. Report back here when you have put a restrictor in and let us know if it worked.
04-24-2013, 11:47 AM
#37
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All combos are a little different. I've used restrictors, no restrictors, pcv, no pcv...all works...all depends on the combo..
You have oil backing up the return lines if it is a light smoke after warming up.
How did you change the return from the single to twins?
I would look at the return lines first, pcv second and restrictor last.
You have oil backing up the return lines if it is a light smoke after warming up.
How did you change the return from the single to twins?
I would look at the return lines first, pcv second and restrictor last.
04-24-2013, 11:53 AM
#38
All combos are a little different. I've used restrictors, no restrictors, pcv, no pcv...all works...all depends on the combo..
You have oil backing up the return lines if it is a light smoke after warming up.
How did you change the return from the single to twins?
I would look at the return lines first, pcv second and restrictor last.
You have oil backing up the return lines if it is a light smoke after warming up.
How did you change the return from the single to twins?
I would look at the return lines first, pcv second and restrictor last.
04-24-2013, 05:09 PM
#39
When I built the FD the first few pulls it laid down tons of oil smoke and never smoked again after that. I would like to see you put some miles on it and see if it goes away. Most new kits need to burn off oils on the inside of the pipes as well.
I might have some restrictors kicking around f you need it. Otherwise Turbociv would.
I might have some restrictors kicking around f you need it. Otherwise Turbociv would.
04-24-2013, 05:59 PM
#40
Could it be like people are stating that its burning off oil. doesn't smoke at first because exhaust isn't hot enough to burn the oil off yet?
Also a good test would be to remove the exhaust and start it and see if oil is coming out of the turbo.
Also a good test would be to remove the exhaust and start it and see if oil is coming out of the turbo.