jonnymerk

Does anyone know if they make ARP exhaust manifold studs for the 2.0 cobalt? I've been having issues with leaking between my turbo mani and the head. I seem to remember the shop that replaced my gasket before had a hard time with the studs and not all were studs. I dunno if that is normal or not. I'd like to have it uniform if possible.

mrbelvedere

iTrader: (3)

you probably needed new nuts they are able to be reused a couple of times and you can get the studs from c.e.d.

jonnymerk

should i get 10 studs and nuts then?

advise

iTrader: (3)

nuts only if the studs look good
the nuts are crushed a little so they dont back off over time

ItalianJoe1

iTrader: (10)

Yeah, just use the stock hardware. They come new with a dab of loctite on the stud and the nuts are locking nuts, so they work very well.

mrbelvedere

iTrader: (3)

replace the missing studs and get all new nuts

Rubbermaid_LSJ

iTrader: (1)

Anyone know the threadpitch/size of the stock manifold studs/nuts?

Tjolley

I think 8mm x 1.25

Rubbermaid_LSJ

iTrader: (1)

Thanks!

How sure are you? Can anyone else confirm this?

Tjolley

almosts 100%...I know its the coarse one...not a fine thread for sure...

ItalianJoe1

iTrader: (10)

I believe he is right, 8x1.25mm on the head flange.