Anyone know the exact bolt size for a turbonetics T3/T4 for the downpipe?

Or atleast what the most common size is?

 

not exactly sure, but I used the CLUTCH bolts for mine.the ones that hold flywheel up...they dont shrink up and back out like the bolts i had before did.

think they are the 10mm. or 12mm...think the flywheels are 12mm....but the bolts i used to connect my 5bolt flange were the 10mm clutch bolts.

 

Well the ones i got from home depot are bigger than 10 but a little smaller than 11,probobly a "standard" bolt.I will begin to tighten them down and they start to get tight and the pop and set themselves back a couple of threads and they keep ratteling loose.