Double Threaded Stud to Turbo

[HotAirWH1]

Can anyone confirm the size of the three studs from the up-pipe to turbo inlet on turbo . It's either 3/8" - 16 x 2 1/4" or M10 - 1.5 x 2 1/4"
I want to replace these studs but need verification before proceeding.
Thx in advance.

 

[HotAirWH1]

I chased down my answer.
Another question - Where can I find / purchase the bolt & spring for the turbo down pipe & what the hell do you call that type of bolt ???
Pic -

 

[Aaron1456]

Did the bolts end up being metric or standard? I don't know how to spec the springs but those are shoulder bolts. Bolt Depot has a vast selection of fasteners in every grade and material you can think of, that is where I would check.

 

[HotAirWH1]

The bolts on the OEM Garrett Turbo are Metric.
The three up-pipe double threaded studs ("Set Up Stud") are M10 - 1.5 - 57mm
The two down-pipe "Shoulder Bolts" are M10 - 1.5 - 68mm > with the "shoulder" 48mm length (12.5mm thick) and thread length 20mm
Thanks for the lead.

 

[WE2Regal]

Are the threads the same on both ends of the up pipe studs? I am in need of a set of the same studs.

 

[N2BUICK]

I have these, three matching $30 plus shipping.
The others are an odd lot. There is another set, but only two bolt heads match, if it makes a difference. Also $30 plus shipping.

 

[HotAirWH1]

Are the threads the same on both ends of the up pipe studs? I am in need of a set of the same studs.

Yes, The closest thing I could find was from McMaster-Car

 

[HotAirWH1]

I have these, three matching $30 plus shipping.
The others are an odd lot. There is another set, but only two bolt heads match, if it makes a difference. Also $30 plus shipping. View attachment 386314

Buick Brother 87 TURBO T set me up !!!

 

[WE2Regal]

Yes, The closest thing I could find was from McMaster-Car
View attachment 386319

Thanks! I have an account with McMaster-Carr. Really great company to deal with.

 

[HotAirWH1]

Thanks! I have an account with McMaster-Carr. Really great company to deal with.

Ya, I've ordered stuff in the past from them too, great customer service.