Soon2BMaxed

i am getting ready to install my y-pipe and since they are rusty as hell im sure i'll break one or all of them. so what size are they? i want to go buy them ahead of time.

NickStam

iTrader: (3)

if you have a FSM, check that first. I don't know the bolt size.

Chunger

iTrader: (1)

You will need slightly longer ones for where it will meet up with the catalytic, though I don't remember what the size is.

Here are some general instructions

sx7r

iTrader: (15)

14mm

MaximaPower

iTrader: (3)

anyone know how to get to the famous nut in the middle of the
ypipe??...that one nut that's in the back and out of reach
i've used those elbow joints or watever they're called
and still can't get to it

i am installing a ypipe on my bro's 97 i30 and need help
i got the o2 sensors off and the other nuts are easy to get
off except for that "one"

thanks

Chunger

iTrader: (1)

Aside from the swivel joint... a deep socket is a must.

//M5'ver

14 mm deep socket 1/2 inch socket with a the same attachemnt you use for the spark plugs is a great idea

ericdwong

M10x1.25 IIRC. If that isnt it, its M12x1.25. I actually replaced all the studs on my cat with new bolts, and all the manifold nuts replaced as well.

Nismo

iTrader: (18)

what is the process of getting them off? I broke one of them.

Soon2BMaxed

yeah, i got ALL the bolts off fine EXCEPT the ones on the d@mn cat. i couldn't get them off for nothing. so in fear of stripping them i gave up. im gonna wait til our meet next saturday. man i was ****ed....


Trevor

Dave B

Cut'em off and drill them out. Then go to Home Depot and buy two new bolts and nut. Problem solved.


Dave

ericdwong

I used a torch (road flare actually) to heat the flange on the cat to expand it and then vice gripped the stud off. The nuts were so seized onto the stud in the other cases that brute force seperated the stud from the cat when using air impact or breaker bar. I actually would not suggest using home depot bolts. They are not grade 10.9 metric bolts (the equiv. of grade 8 for SAE) and will break easily, especially for a high heat application like the cat.

I got all my hardware from pep boys. Oh yeah, be sure to anti seize the F outta all the threaded bolts for easy removal.

Soon2BMaxed

thanks! its fathers day so im doing it tomorrow.

Trevor

JAY25

iTrader: (38)

You just spray some Liquid wrench work on all the other 14MM nuts and come back and loosen that one nut thats impossible to get to. Is not that bad I dont know why people make a big deal out of that. Universal joint, 1/2 inch 14MM deep socket, Long extension, and if all possible instead of a small socket use a breaker bar with a adapter to fit 1/2 socket. Thats what I used to put remove and put my Ypipe back on.

Ypipe is an easy thing to do. To me the key is the breaker bar and Universal Socket joint.

MaximaPower

iTrader: (3)

well i guess that nut wasn't that hard to get after all,
right after i posted the question about taking out that nut
my bro already took it off....only problem w/the new
pipe is vibration and lots of it...gonna check that out tomoro