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Turbo Rebuilds, a question Posted By: cmerc On: 08-27-2009 @ 08:34:01 Reply | Edit The guy who rebuilt my turbos said the problem was caused by contaminated oil, I don't believe it, but want to be sure, so heres what I did, do you guys thing this is a good indicator or not. I had my mechanic change the oil filter and I strained the oil fron the filter through a coffee filter, I really don't see any debris in the filter, but I wondered if you guys thought this was a good enough test, I also plan to open the oil filter up and inspect it as well. -- 
Posted By: Lukn4Trbl On: 08-27-2009 @ 08:44:23 Reply | Top | Edit No, it's not really a good test. The oil bypass valve is open a percentage of the time under heavy pressure scenarios and the engine therefore receives unfiltered oil. You can either install a large capacity filter to cope with the volume of oil and/or weld the bypass shut (like most performance engines). Turbo bearings are very fragile, it wouldn't surprise me if dirty oil was behind the failure. Tough to say without see pics at least. -- Welcome to the Internet, where everyone's a mechanic and has a 10 second car. 
2000 Camaro SS, 6 Speed, Black/Black. Going for low 12's! 1980 Z28 - Miss ya buddy! Posted By: cmerc On: 08-27-2009 @ 08:54:06 Reply | Top | Edit ^ thanks, but just in case you missed my original post, I had my turbos rebuilt (because one of the turbine wheels had disintergrated after about 80k miles, there was no smoking from the exhaust) and installed in February, at that time I had a complete service done on the engine which obviously included new oil and air filters, and an oil change. One of the turbos failed within 3 months the other in 5 months. I sent the first one back and was told the bearings had failed probably due to contaminated oil. Hence the reason for me checking the oil for contamination. --
Posted By: 4Birdman On: 08-27-2009 @ 10:09:41 Reply | Top | Edit Cut the filter and see. I think this guy is lying through his teeth. I once had a turbo LeBaron that I was running a built engine and bigger turbo on. I spun a bearing and threw shavings all in the oil. The car wasn't worth crap, so I just dropped the pan and replaced the bearings and kept driving it. Drove it for another couple years like that, and while I changed the oil at the time, I know I didn't get all the shavings out of it. Never had any issues with the turbo. -- 
1998 Trans Am - A little bit stock 1974 AMC AMX - The Grape Ape - 401/4-spd PatriotDream.org - Help build a soldier's dream car Posted By: cmerc On: 08-28-2009 @ 15:15:38 Reply | Top | Edit ^ Brian, Tino, I had the filter opened and just had a look at it, result? clean as a whistle  that settles it in my mind.--
Posted By: 2001ss350 On: 08-30-2009 @ 17:13:49 Reply | Top | Edit what do you have a turbo on? --  Posted By: cmerc On: 08-30-2009 @ 19:57:15 Reply | Top | Edit  rice
Besides my Z, I have a Twin turbo Toyota that belonged to my son! --
Twas in the darkest depths of mordor I met a girl so fair, But gollum, and the evil one crept up and slipped away with her. Posted By: ThumperNC24 On: 08-30-2009 @ 20:08:30 Reply | Top | Edit supra? thats a pretty sick car. go with bigger turbos  -- 
99 Pewter Trans Am M6 - FLP LTs, Corsa Catback, BMR STB, UMI Adj. PHB, LT1 Pro-Kit, Koni Sport 4/3, BMR Adj. LCAs, K&N CAI, LS6 intake, Thunder Racing Custom Cam, T/A Girdle, Richmond 4.10s, Cartek Stage III clutch, Line Lock, Comp 918s and Ti Retainers, Hardened Pushrods, Kenny Brown DD SFCs, 160* Thermo, 18" HP Evo Wheels, Super Hawk Hood, some other stuff http://www.fquick.com/ThumperNC24 Posted By: cmerc On: 08-30-2009 @ 20:43:56 Reply | Top | Edit sorry, nope it'a a Soarer the Jap version of the Lexus Sc400 --
Twas in the darkest depths of mordor I met a girl so fair, But gollum, and the evil one crept up and slipped away with her.
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