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The link worked for me but it could be down, to make hose removal easier you can try heating the hoses. A heat gun or a small flame works, just be careful with the flame
As for the primary having a mechanical problem, that is possible. I am not as well versed with how the exhaust flows though the turbos but I do believe you are right and the primary is always spooling hopefully someone who knows will chime in.
In the mean time you could take the primary intake off the turbo, I think it is held on by 2 10mm nuts, with the car off try and move the compressor wheel. Try spinning it and moving it forwards backwards, up and down. There should be very little in and out movement and no up/down movement. If the compressor checks out, you could leave the intake off, make sure nothing is near the compressor and start the car, it should start turning.
Have you tested the blow-off valve? I was just wondering if it could be sticking partially open, it would act like a split hose. Just a thought.
yep it could, if the primary turbo was stuck (compressor jammed against the housing ect) once the secondary turbo comes on the boost would follow the "path of least resistance" and most of it would spill out the primary.
I don't know the exact rpm these turbos spool at but they have to be 100,000 rpm or more, at those speeds it wouldn't take long to have that turbo fail completely, which would drop your psi from 10 to 0
Have you checked the y-pipe, crossover pipe, intercooler ect for metal filings? (i am just thinking worse case scenario) If you find metal filings it might be worth while doing a compression check as well.
Sorry for your broken turbos that does really suck, you might be able to find a lightly used set in the parts section.
I think it didn't made contact, but not sure since I haven't checked for metal fillings.
I assume this would be a good timing for pulling the engine and doing a rebuild.
I'm not sure if buying a used turbo would be the best idea. Here in Germany, they are pretty pricey, I have seen them going for up to 250$ each. Taking into account that mine has only 47000 miles on it and is that fucked, I think my best option would be to go single now.
Thank you for naming the solenoid and the links. The last one isn't working though, temporary problem?
I removed some vacuum hoses yesterday for testing the vaccuum, they are VERY brittle! Needed lots of WD40 and a screwdriver to remove them, they instantly cracked.
I would really like to simplify the whole system, so I'm thinking going non-sequential.
Back to the turbo, how would the symptoms be if the primary turbo would be mechanical defective? I assume I would have no boost from the primary turbo and some from the secondary, right? My hopes that this is a turbo controlling issue are thinning out..
The reason for this is mainly the closing charge control valve, when the engine starts. When I understand the system right, the only way then for no boost on the primary turbo would be a boost leak, but then why is the boost rising at 4500 rpm?
None sequential isnt really .. worth it ... you would be losing out on the one thing that makes the twins worth it . the vacume system Is REALLY not that complicated once you understand how it works its just hoses and air and getting them setup correctly and making sure the solenoids are good .
you can simplify the system by running simplified sequentials and you can use the solenoids that you remove as spares for any that might be giving you trouble .
Again do not go non sequential you wont get any low end torque anymore it will be like a single turbo but without any of the benefits .
It's the wastegate of the primary turbo (?). Pretty logical now that the primary could not build any boost and the secondary was only 4-5 psi since it needs the primary to work proberly.
Thank you all so much for hanging in there with me!
It's the wastegate of the primary turbo (?). Pretty logical now that the primary could not build any boost and the secondary was only 4-5 psi since it needs the primary to work proberly.
Thank you all so much for hanging in there with me!
Can someone please send me this picture or help me locate the "wastegate of the primary turbo" its not showing in the thread, I am having the same issue as Namxi and I also have a stock low mileage FD.
Do you see the rod below the one that is not connected? This one can be seen when under the car. If you look higher, you should also see the rod that was the problem in my case, but IIRC you can't see much of the rest of the system. I'm not to sure if one could solve the problem without removing the turbos.
