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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > docrace single turbo installing question?



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      10-15-2020, 11:35 AM   #1
chiefsotos
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docrace single turbo installing question?

Hello, i am in the middle of the installation of docrace single turbo.

I have a question about these bolts:

The 4 gold bolts are for turbo manifold.
Should i use the long side at docrace manifold and the small one to turbo or the opposite?
Should i tighten from botom with a nut or just screw them in the manifold?

The silver bolts on the top where are they going?

Last edited by chiefsotos; 10-15-2020 at 12:04 PM..
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      10-15-2020, 12:12 PM   #2
Emilime75
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Short end of the stud into the manifold, long end is what the turbo flange bolts onto.

Not sure about the silver bolts - are you missing a nut?
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      10-15-2020, 03:39 PM   #3
1Bad335turbopsi
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I would call DOC about those four bolts.....
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The usual mods....
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      10-15-2020, 11:04 PM   #4
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I will take a look on mine but I think the nex bolts go on the turbo flange where hot and cold side meet, by the oil line. Not sure about the 3 nuts.
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      10-16-2020, 04:48 AM   #5
chiefsotos
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Thanks for the info, if you can confirm the silver bolts would be good
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      10-16-2020, 04:51 AM   #6
chiefsotos
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Probably be for the wastegates coupler and dump tubes
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      10-16-2020, 09:32 AM   #7
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Quote:
Originally Posted by 1Bad335turbopsi View Post
I would call DOC about those four bolts.....
Always the best way to go

Contact em, I'm sure they'll be more then happy to help as they are a very reputable company

And if a bolt or nut is missing then you can solve that as well all in one go

Good luck to you, post up some photos to inspire us all to go single when you're done
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      10-16-2020, 03:00 PM   #8
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I installed my kit a month ago and only received those silver bolts and nuts w washers. I used it on the turbo flange where the turbo sits bc my kit didn't come with the gold studs and nuts. I had no spare hardware around while I kept looking through the kit bc my buddy who bought a used kit(we were doing the kits together) his came with the studs and nuts. I had issues using the silver bolts bc it was such a tight position so I emailed DOC and mentioned I didn't get the gold studs and nuts so they sent me a set for free.
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