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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 > Does anyone know the size and thread pitch of the wastegate bolts?



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      07-01-2019, 07:59 PM   #1
pjr710
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Does anyone know the size and thread pitch of the wastegate bolts?

Just curious more than anything and I think it should be documented.

I have to "re-do" my front turbo adjustment b/c i did it wrong. It would be nice to know the size and thread pitch of that bolt - just in case someone ever had to replace it or buy a longer one or if it ever fell out!
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      07-02-2019, 06:53 PM   #2
nissubaru
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Quote:
Originally Posted by pjr710 View Post
Just curious more than anything and I think it should be documented.

I have to "re-do" my front turbo adjustment b/c i did it wrong. It would be nice to know the size and thread pitch of that bolt - just in case someone ever had to replace it or buy a longer one or if it ever fell out!

Well the part number is 18307562224 and they're only about $2 a piece so I would probably just buy OEM

To answer your question though, they are M8X40. Not sure on the pitch, either 1.25 or 1.0
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      07-02-2019, 08:06 PM   #3
pjr710
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Quote:
Originally Posted by nissubaru View Post
Well the part number is 18307562224 and they're only about $2 a piece so I would probably just buy OEM

To answer your question though, they are M8X40. Not sure on the pitch, either 1.25 or 1.0
I don’t think that’s them. I don’t think there is a part number for them.

The bolts are short. I just bought 1.00 and 1.25 nuts for 8mm. When i take them off i will see which one fits and post it here.
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      07-02-2019, 09:40 PM   #4
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Wastegate actuator nuts are M6
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      07-03-2019, 06:39 AM   #5
pjr710
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I’m prettt sure they’re m8. I’ll know for sure maybe tomorrow morning. Here’s a pic i took when i was doing the job. Those are 8MM washers on there.

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      07-03-2019, 06:47 PM   #6
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Ah you're talking about the bolts for the bracket, not the nuts for the actuator canister.
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      07-04-2019, 12:42 PM   #7
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Ok more pics. Just redid the job

The bolts are like m8x10 maybe? 1.25 pitch




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