I have been making pretty good progress on my DIY turbo kit and should be done soon. This is my first build, ever.

I am at a breaking point currently. I have a BEGI 1.8 manifold and a GT2560r turbo.
I ordered the M8 Inconel studs from FM, only to find out that my manifold seems to need M10 studs.

I cannot find M10 studs that seem to be correct for this manifold, especially Inconel ones.
I have contacted Tarmac88 about the TSE M10 studs they carry (but are out of stock) but haven't gotten a response yet.

The BEGI documentation also seems to be inconsistent, as their install instructions specify 10mmx30mm, but their website sells 10mmx37mm studs.

Does anyone have any clue which studs will actually work with this manifold + turbo combo successfully?
Also, I plan on tracking the car, that's why I went the Inconel route.

 

RX-7 studs are M10x1.5 and Inconel. P/N 9YA9-21-008.

Not sure if it matches your length specs however

 

Wow didn't know that. I will check and see what the length is.

 

JE10-40-355 for the flange nuts btw. Rotary EGTs are super high, hence the Inconel.

Here are your measurements:

 

I am pretty sure that your GT2560r turbo is designed to use 8mm studs not 10mm.
Double check to confirm that you can use 10mm hardware, before purchasing.

Full race also sell inexpensive Inconel hardware($50 for 10mm).
10mm

You can purchase step studs 10mm-8mm, but I have never seen them in Inconel and I don't know how they would perform in this application.

 

Yes the turbo is definitely 8mm. I could drill it out to 10 though.

Looks like the RX7 studs could work. Just not sure about length.

 

Does anyone know the maximum stud length that will work with a 2560? I told Andy that I did not think the 40mm studs would work because they would hit the turbine housing here...

 

although the full race units are also 40mm in length, the threaded portion that does not screw into the manifold is shorter. Maybe 23-24mm. You could call them to confirm.

 

I saw that, I just wanted to be sure that the begi manifold can accept the longer manifold portion. I looked at it and think it will, but without trying the studs I am not completely sure.

 

Full Race also sells M8 inconel studs and the locking washers and nuts, in case anyone ever needs them.