acarapella

Hello,

To save my the trouble of having to get into my project before I have all the parts, does anyone know what size bolts are used to hold the exhaust y/flex/cat pipe together both at the y and at the cat? Are they hardened or special in any way?

Thanks !

ES300NZ

why ? - they are re-usable. failing that being possible I think they seemed to be M8's (or M10's) @ around 40mm - 50mm

M8 = 8mm diameter.

nah, they're just a plain old stainless steel nut and bolt. they should be totally re-usable. (unless rusted beyond re-use. You can just use any old nut and bolt that fit properly.

acarapella

Unfortunately my friend, I live in the most heavily salted region in the world. Cars rust here, badly. Thanks for the info! I'll have them on hand

KLF

Should be M8 diameter STUDS, take a 14mm socket.

Don't think so. Those nuts are NOT stainless (stainless hardware will gall and seize together in that application), and they are NOT intended to be reused.

acarapella

Well one of those studs broke off in the flange going to work on it again tomorrow. Going to try drilling and using an easy out. that was the front one. The rear one (rear bank Side of the y I mean) had nuts welded onto one side and a bolt in the other. One of thos broke too.

I purchased HARDENED bolts. Should I return them? Also if I can get that stud out I am going to replace it. Probly m8x1.25. If not I'll drill it large weld a nut on one side

ES300NZ

Take the header off the car for the work. It's going to go so much better.