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  • Bumblebee (another NA -> turbo conversion) (p.17)
2016/01/17 21:34:29
Deco
MCT_MR2
Looking good deco.
Just a quick one, i know its not as tilted as it looks in the photo, but are you leaving the turbo core on the angle you have it in your photo with the lines mocked up??

As a rule of thumb, the core should be now more than 30 degrees off upright to ensure oil flows in, lubricates and drains out of the turbo core properly. It looks a bit too rotated in the photo, meaning the bearings (or bushings) might not get lubricated properly, and with the drain on that angle, you will have pools of oil build up in the core, which can give you a smokey turbo pretty quickly.


Thanks for this bit of information. It's incredibly valuable!
The final position is more or less the same. I did pay attention to its position as I wanted the flow of oil to be as streamline as possible. However this was the best I could get as the core/intake side rotate together unless I'm missing something? To get it anymore upright the exit of the intake side would be pointing into the engine and not upwards for the intercooler piping.
2016/01/17 21:41:37
MCT_MR2
The compressor covers will always be able to rotate, some easier than others. Garretts have plates and bolts, but from the photos i have seen of your turbo, it most likely has a giant circlip in the back of it. They are a major pain in the ass. Unless you have a giant set of circlip pliers (sometimes it can be done with long needlenose pliers), you free up the circlip and GENTLY tap the housing round. Hit it too hard and you will damage it. If you remove the circlip you may have a hell of a time getting it back on. People that build automatic transmissions, and turbo shops have the tools to do it, yoy could always approach someone local to help you out.
2016/01/18 10:21:47
Deco
Ah yes I do remember seeing a giant circlip on rear of it. I guess I'll give it to the workshop to do it as I dont think the circlip pliers I have are anywhere near the size to do the job. Thanks again for alerting me to this fact!
2016/01/21 17:18:37
Deco
I picked the car up from the exhaust shop last night and after an embarrassing drive home due to the new clutch. I've found that the turbo isn't boosting and I can only hear a very slight almost not there spool sound. The engine has no power, bad enough that I had to pull into the truck lane going up hills as It struggled to power up hills. Not quite sure if this is due to the absence of boost or if the engine is running rich or both.

Im a little bit worried that something is very wrong. But I will be checking the MBC as I turned it down a bit to be safe as I had the CT20b up at 18psi and I could of turned it down too much. I will also look for boost leaks around the intercooler and the wastegate just in case.  I've tried doing some reasearch on the TD06 and what their characteristics are running low pressure to try get an idea if it could just be a not enough pressure situation but unfortunately there isnt much info out there about that. 

Oh well, back to the garage......
2016/02/01 16:57:48
Jaemus
Oh lame. Did you already check it wasn't something simple like a blown intercooler hose?
2016/02/02 08:57:22
Fast Eddie
Running like mine after i popped the hose off my intercooler @ MTC. Managed to drive it home without boost. On a close inspection back at the work shop the hose was also split there for losing power before the hose popped off. replaced hose and clamps now running so much better' to bad I didn't sort it out before MTC, s**t happens. 
2016/02/02 10:40:25
Deco
Jaemus
Oh lame. Did you already check it wasn't something simple like a blown intercooler hose?



I checked all intercooler couplers, manifold/adapter gaskets and the wastegate gasket and everything is tight without leaks. I did turn up the boost controller a bit and took the car for a drive and the turbo did make some pressure...20psi worth. 

But the issue I have now is that it is VERY laggy. I'm seeing between 2psi and 5psi from 3500 to 4300 RPM and then all of a sudden it shoots to 20psi from 4500 to 5000 RPM. I have read that people are seeing full boost with a TD06 somewhere around the 4000 to 4500 RPM range so this leads me to think I may have a timing or fuel issue.
 
Who knows, could be something as simple as the stock chipped ECU I have is not optimised for the flow of the TD06 and is providing incorrect fuel trims.

Also I was able to rotate the turbo so that the oil feed is in a more upright position. However the cartridge has a locking pin that stops me from having it vertical. So I have had to settle with the oil feed at 30 degrees which was as far as it would let me go. 
2016/02/02 12:02:14
stuka
what kind of boost controller do you have? the manual type have a ballbearing that sometimes sticks a bit until the boost pressure overcomes whatever is holding the ballbearng in place, might explain your 'all or nothing' symptoms
2016/02/02 13:07:50
Deco
Its an MBC, the brand is Turbo Tech to be exact. I never had any issues with it when it was running 18psi on the CT20b but I'll definitely test it just in case.  
2016/02/02 16:48:57
Mrskylighter
Can you just try and run it without a boost controller? Just on wastegate spring pressure whatever that is.

Even with no boost at all the car should still have some power to go up Hills etc.

Maybe it's just a mismatched turbo and has heaps of lag then all of a sudden it hits really hard. Like the old Trust turbos T67, T78 etc
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