Bolt length and thread pitch

[Joe Cool]

I did a thorough search but the only results yielded didn't seem to be exactly what I was looking for.

I'm going to be doing a turbo swap soon. My new setup will consist of a stock 2G exhaust manifold, an MHI E316G, and an Evo III o2 housing.

Both of these sets seem to be what I am looking for.

EXTREME PSI : Your #1 Source for In Stock Performance Parts - ARP 8740 Chrome Moly Turbo to Manifold Bolt Set: Mitsubishi Eclipse 90-99

EXTREME PSI : Your #1 Source for In Stock Performance Parts - OEM O2 Housing Stud & Bolt Set : Mitsubishi Eclipse 90-99

Are these both the correct parts for my application? Also, what is the stud for with the o2 bolts? A stud from the o2 to the downpipe or elsewhere?

I'd like to purchase them locally. Does anyone know what the particular specs of these bolts are so that I can purchase them locally? Also, can it be confirmed that the OEM bolts are a grade 11?

Thanks a bunch.

 

[spooled_u_1st]

I would suggest using the oem turbo to manifold bolts instead of the arp's. Also there are special washers for these bolts. 2 for each bolt/stud.

Yes the oem turbo to manifold bolts are grade 11.

 

[Project2G]

What is the thread pitch for the turbo bolts? the 4 bolts holding the exhaust manifold to the turbo hotside?

 

[19Eclipse90]

M10 x 1.25mm pitch.

http://www.dsmtuners.com/forums/frequently-answered-dsm-questions/304059-what-size-bolt-screw-fastener.html

 

[banishedmunk]

the o2 housing has 3 bolts and one stud to mount to the turbo exhaust housing.

 

[Project2G]

M10 x 1.25mm pitch.

http://www.dsmtuners.com/forums/frequently-answered-dsm-questions/304059-what-size-bolt-screw-fastener.html

Thank you sir