How do I enlarge the holes? I dont want to make the housing where the holes are too thin garrett made them 8mm for a reason... I am just looking for high quality high strength studs and bolts. Does anyone know where to get something like this and the sizes for my application?

Thank you

 

I dont know the size for your app. but i get all my grade 8 bolts from the hardware store. There is an Ace Hardware by me with a large selection but a bit expensive. I had bought about $50+ worth of various bolts for my roadster.

 

Grade 8 isnt the strongest. I dont want to pe pulling out the turbo every 6 months because a stud broke. I know People with the PES kit go from the PES hardware to upgraded ARP bolts but I have searched and cannot find the part numbers for what I need...

 

Grade 8 isnt? Then what is i have been the under the impression that Grade 8 is the strongest which is why they are used on suspension.

 

im sure you can get the brass type which is best for exhaust systems because they don't rust up so easy when stripping down, I wouldn't advise you to drill the holes out unless you understand the math in it

 

studs: AF3.725-1B
Nuts: 300-8340
Washer: 200-8641

These are the part numbers I found posted on AW. I can find the nuts and washers but cant seem to locate the part number on the studs. I have an email into ARP to see if they have that part number in their system. Let me know if you came up with a solution because I am in the same boat as you, and need to fix the bolt soon for smog!