Every one that has come in so far has scorching on the thrust surface. A good portion of them have scoring on the turbine shaft from infrequnt oil changes. (oil life monitor=poo) Which really sucks since most of them claim to have <5K miles on them.
The ones that have gone that far need thier turbines sent out and reground to make it smooth. Then I have to source or fabricate an undersize bearing to accomidate the new shaft dia.:
Wow....very disturbing. Thank you for passing this info on. This is my first Turbo car....I'd like to learn from what you are seeing so early on. I am assuming these owners are using Mobil 1 since that is what comes factory fill. If they claim less than 5k miles, they can't have missed TOO many oil changes. Do we need to install turbo timers? What can be done???
Those with 2007 high milage GXP's, are we seeing any turbo failures yet?
Is this just an issue if you are doing a swap out of internal turbo parts like BTF is doing, or will this kill the turbos early in their lives???
__________________
2006 Deep Solstice NA...Traded in for:
2009 Sky Redline Ruby Red Limited Edition
5 speed manual/rear spoiler added/6 disc/Monsoon
GMPP Tune/MBRP Charge Pipes/DDM Backbone & Probeam/Chromies/K&N Drop in/HIDs
*Thank You Bob Lutz* And UAW 435 workers
2007 Xterra 4x4/1996 Viper GTS/1995 Z28 6 speed in the driveway now
Last edited by JeffInDFW : 11-13-2008 at 03:20 PM.
I havent heard of any going so far as to failure, and admittedly so this has been a relatively small sample group so far.
The best advice I could give is
1) Run a good synthetic
2) change it when it needs to be done (3-4 K iif your pounding it)
3) High boost pressure + high rpm on a stock turbo spins it too fast. Likely causing a fluidsheer based starvation issue.
If you hammer your engine .......just make sure when you park your car, dont turn off the engine right away. Just let it run there for a couple of minutes to cool it down......then turn it off.
but if you have the extra stash (i dont).....then go ahead and buy a turbo timer.....then you dont have to wait inside the car for a couple of minutes. The turbo timer will just let your engine (depending on what setting you make)....for a couple of minutes..then shuts it off
BTF,
Bryan left you a phone to call him back.
Send you a PM about it.
Hope you guys get together and we can get this testing going.
__________________ Aggressive GXP at $25,995.00 shipping of $600, MT.
Options:
Air, $960; Chrome Wheels, $545; PCQ, Premium Package (Leather), $525; Radio, 6-Disc with MP3, $495; Monsoon, $395; Premium Acoustic Headliner, $150; and Sport Metallic Pedals, $115; all totals $29,180.00. No XM/OnStar and NO Spoiler. MODS (Magnaflow 2.5", BTF Turbo Upgrade wheel,DDM BB,ProBean&tune, K&N filter, Ventureshield.
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~~~~~~~ NASSOA
Founding member
~~~~~~~
Last edited by LatinVenom : 11-14-2008 at 10:01 AM.
If you hammer your engine .......just make sure when you park your car, dont turn off the engine right away. Just let it run there for a couple of minutes to cool it down......then turn it off.
but if you have the extra stash (i dont).....then go ahead and buy a turbo timer.....then you dont have to wait inside the car for a couple of minutes. The turbo timer will just let your engine (depending on what setting you make)....for a couple of minutes..then shuts it off
Thanks for taking time to explain. I also went searching the forum for info, and found that the turbos in our cars are water cooled which is supposed to be a big help in this area as well. I just wonder why BTF is alreadying seeing what he is on the turbos he is getting....
__________________
2006 Deep Solstice NA...Traded in for:
2009 Sky Redline Ruby Red Limited Edition
5 speed manual/rear spoiler added/6 disc/Monsoon
GMPP Tune/MBRP Charge Pipes/DDM Backbone & Probeam/Chromies/K&N Drop in/HIDs
*Thank You Bob Lutz* And UAW 435 workers
2007 Xterra 4x4/1996 Viper GTS/1995 Z28 6 speed in the driveway now
Thanks for taking time to explain. I also went searching the forum for info, and found that the turbos in our cars are water cooled which is supposed to be a big help in this area as well. I just wonder why BTF is alreadying seeing what he is on the turbos he is getting....
no problem bro!
I believe the reason why those "issues" occured is not because of not having a turbo timer or not cooling down the turbo before turning off the engine. Some reasons maybe the following:
1.) not changing oil at the recommended date (3k miles)
2.) stressing the tiny turbo to the max, due to race tunes (boosting from 20-24 psi). Which is above the 14-16 psi stock.
3.) going above the 6200 rpm range on a long period of time
?? Was the turbo LV supplied???
The first one he sent had metal boogers stuck to the Turbine, gouged shaft ,sorched thrust, broken glass inside the BOV, broken ear off the compressor.
THe second looked beautiful outside but still had a scorched thrust bearing and a nice 0.003" dig int he turbine shaft from a piece of foreign material.
yes I can post a pic
What value are you looking at, the MAF doesn't seem to dip? The cylinder air mass starts to oscillate, but, the overall MAF is straightline?? What is that 3.7 degree retard - at the same time the KR is zero?
I havent heard of any going so far as to failure, and admittedly so this has been a relatively small sample group so far.
The best advice I could give is
1) Run a good synthetic
2) change it when it needs to be done (3-4 K iif your pounding it)
3) High boost pressure + high rpm on a stock turbo spins it too fast. Likely causing a fluidsheer based starvation issue.
I go old school and change it every 2k $60 vs $1200 plus labor
The ONLY reason I'm not running the RP XPR is because it's NOT GM approved. Mobil 1 is all I use in our boosted cars, and Mobil 1 extended performance in the non-boosted ones.
Been going 5,000 miles tho on changes. Better cut that in half with this car.
__________________
I am praying HARD for you Keith.
I am praying HARD for the grieving family of Nellie.
The ONLY reason I'm not running the RP XPR is because it's NOT GM approved. Mobil 1 is all I use in our boosted cars, and Mobil 1 extended performance in the non-boosted ones.
Been going 5,000 miles tho on changes. Better cut that in half with this car.
nuttin wrong with Mobil 1 bro......since it is GM APPROVED I always use mobil 1 with my other cars before too. I think it's one of the best out there. And yes, I think 5000 miles is kinda pushing it...especially if you are beating your car day in and day out (I'm one of the guilty ones). After my turbo upgrade, I'll keep my oil changes under 3000 miles.
but remember, compressor upgrade/wheel upgrade or any kind of aftermarket upgrades.....are NOT GM APPROVED! HAHAHA!
I like RP XPR, since it is made for the sole purpose of usage of cars with turbos, superchargers, nitrous.....
RP XPR and Purolator oil filter are my best tag team! I don't care if they are NOT GM APPROVED!
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