clocking turbo potential issue...
 

I just clocked my new turbo and the c-clip/snap ring that holds the intake side to the back of the housing seems to be seated but the orientation can still be moved with a little bit of pressure. Is it normal for brand new turbos to be really easy to clock until they heat up for the first time? I am just terrified of putting it on and getting into boost to see it come apart and destroy the wheel... I'm sure my terminology is wrong but I hope you all get what I'm trying to say. Thanks.
Ben

It will be easier once it's been turned recently, but it should still take a bit of effort to do so. Wiggle it back and forth while you or someone else taps on the snap ring, just to make sure it's set properly.

Thanks.

Dude also loctite those c clamp bolts. I used resbond.

Noted. Also, there is barely enough room to fit a small flathead screwdriver behind the snap ring on the compressor side. Normal?

got the turbo in and as soon as I started the car the rear oil seal blew out. I've never seen a turbo purge oil like this one is. There is a pool of oil behind my car right now...

This is absolute bull. That's what I get for going with cxracing... I primed the turbo with oil and then started the car resulting in oil shooting out my exhaust 5 feet in some spots...

No, not normal. There should be a high-temp O-ring on the intake side of the center section. Pushing the intake housing on should compress this O-ring. Once the C-clip is in, it should be very difficult to move the intake housing. The C-clip should be held tight by the O-ring attempting to decompress against the intake housing. Something is wrong with your assembly. Don't run the car until you figure it out.

I got the c clip thing resolved yesterday. It snapped into place properly with the help of my room mate and everything was fine until I started the car. No unusual noises and there is no damage to any of the blades on either side and no movement of any kind of either housing. I have sent an email to the seller I bought it from and hopefully they'll let me swap it out for another unit. This just sucks especially hard being that this is my daily and I had to call into work today being that I'm not into smoke screening fools all the way to work...

Just to end this CXRacing did well by me and are sending me a replacement turbo. They said they've never seen a turbo do what it did when I installed mine. Hopefully the next one will actually work. They are forgiven ha.

Good luck... waiting for good news and power.

Got the new turbo that replaced my new turbo in yesterday and there is the possibility that it's still leaking oil... Although the smoke may just be from my muffler that's completely full of oil; OR my intercooler that's completely full of oil; OR both...

Too much oil pressure to turbo?

Return line is not clogged first off. That's the only thing I can think. If this one really is bad it went bad as soon as I started the motor because smoke levels stayed consistent. I can't imagine that the lil' 1.6 could put out enough oil pressure to ruin two brand new turbos immediately...

Haven't driven it yet though. I'm going to do some serious work if this crazy Missouri weather clears up tomorrow afternoon. 70 degrees five days ago. Snow last night and this morning...

What he meant was that some turbos need a restrictor in the oil feed line to drop the oil pressure to the center section. What kind of turbo is this? BB or journal bearing?

Recommend you search "restrictor" to read up on it.

I had heard about this but my previous setups have been fine without a restrictor till now. It's a 16g journal bearing tdo5h dsm turbo. No flaming plz...

Generally, you don't want to use a restrictor on a journal bearing turbo because the bearings are lubricated and cooled by the engine oil. Ball bearing turbos are usually cooled by engine coolant.

Sorry, not much help.

If you spewed that much oil from the first turbo, I'd imagine there's still quite a bit in the dp>exhaust and maybe that's why the 2nd one is still smoking.

Have you checked the oil feed & drain lines off the turbo? I checked mine once and the amount of oil that comes from the feed line with just a bump of the starter is about half a soup can. I'm still not sure how I feel on the topic of restrictors. Everyone has a different opinion on them and I've heard so many variations of reasons why to run or not run one.

If you think there's any oil in the IC or pipes I'd suggest taking the time to pull everything and hose it out.

My Garrett started smoking quite a bit and I don't know if its due to not having a restrictor or if it was just time for a rebuild. I'm currently waiting to hear back from Gpopshop to see what they have to say about it. While I have their ear I'll ask them what they have to say about restrictors and probably take their advice on the matter.

Thanks. I replaced my ricer muffler with a nice tip today and there was a lot of oil in the muffler. I probably lost about a quart from the last turbo failing. I drove the car to work today and as soon as it heated up it was smoking badly. It gets worse if I give it gas. The thing is that neither of the turbos made/make boost... I'm stomping on the gas and there is no boost building... the car runs fine otherwise. Going to contact the seller tomorrow and ask them to send me a rebuild kit. I want to get into the last one they sent me and see if there was something wrong besides the oil seals. If there is too much oil pressure could the bearings fail? That's my only idea as to why the turbo isn't making boost. Should I have broken it in somehow? At a loss...

Just put in a rivet restrictor. Hopefully tomorrow will be less smoky. We'll see how long it takes me to get ticketed on campus tomorrow filling the parking garage with oily smoke!

First off were in missouri are you located? Have you taken your dp off to see if it's leaking in the turbo? Could just take a long time to burn out that oil. Then again I don't know why it wouldn't be spoiling. Do the blades spin freely? Also, stupid question I know but are you sure you didn't blow an ic piping coupler? Even if the turbo was hosed, if the blades are spinning I'd imagine it would make atleast some kind of boost.

I plan on checking to see if the blades are spinning soon. Between school and work it's hard to find daylight to work on the car. I'm in Springfield, mo btw. I went over all the couplers and all seem to be attached correctly. I even went so far as to tighten my new bov almost all the way in case it was leaking. We'll see how it runs today with the restrictor in place. I haven't gotten on it too hard yet just because the smoking prevented me from doing so. Thanks for all the input so far guys.
Ben

well if youre blow off valve was leaking, couldnt that be the reason youre not boosting? boost leak. it should be boosting no matter what, unless theres a leak, becuase if its a brand new turbo even if it is cxracing, it should spin freely..and if its spinning youll get boost. technically.

i had a cxracing turbo on my old toyota cressida, i didnt have a restrictor and the seals blew almost instantly, but i was still making 8 lbs of boost.

Back from school today. Still smokes and I can't hear the turbo in the exhaust...

Don't know what it could be. There is just an ungodly amount of smoke when I put my foot down and my boost gauge looks like there isn't a turbo at all. I don't make more than -8psi ever... I've contacted CXRacing and hopefully I'll at least get a free rebuild kit after all this nonsense.

Something doesnt sound right. Post some pictures of your setup and let everyone have a look at what your working with.

There web site says restrictors are required on there turbos

The only thing that I can think is that when I clocked my turbo to line up the wastegate properly I left the oil feed slightly off top dead center. It's off by maybe a few degrees but I can't imagine that it would instantly destroy a turbo...

I think my issue might be a little too dissimilar to yours, but check out my recent thread: https://www.miataturbo.net/showthrea...t=turbo+ruined

Restrictor solved my problem. Took a little bit of driving before it stopped smoking.

My turbo was making boost perfectly fine while smoking.

Still no boost but I can hear the turbo in the exhaust... Somethings seriously eff'd up... Still reading boost levels like an NA car...

maybe your turbos too big and you just cant make boost. lol

Soo thought about this yesterday. I saw a small crack a while back on the back side of my manifold. I'm running straight pipes so I'm not sure if I'd be able to hear an exhaust leak up front. Could my cheapo manifold be leaking so badly that the turbo wouldn't spool? I'll be investigating soon but school and work have made this repair pretty lengthy.

http://www.boostedmiata.com/gallery2...-1/cracked.jpg

I made 160rwhp on this.

So yeah... My air filter was soo gross that it wasn't allowing enough air in to spool the turbo. Didn't think that was possible... Turns out my room mate washed it when we swapped turbos and it's not washable; resulting in the filter material becoming one solid mass. My retardation knows no bounds!

turbo still needs a rebuild being that it's smoking under full boost pretty badly but at least the problem's been found

Get that mani fixed or get a new one, a leak there will cause problems

Probably converting to T3 with a cast mani. No more cracks!

I had the same problem with a godspeed t28, wouldn't build boost...I have no idea why. I even closed the wastegate completly and no boosts...leak tested all my pipes and shit no leaks...turbo just sucked I guess.