So I'm finally changing my y-pipe to a Warpspeed. All my bolts are gonna be completely rusted especially since I live in NY. What size bolts/washers should I buy for the parts of the y with the gaskets? Someone please help me A.S.A.P!

(and yes I searched)

 

All of the stock studs are 10x1.25.

 

Are you sure? Cause I'm going to Homo Depot tomorrow to get some stainless steel ones. Anybody else wanna back him up?

 

Understanding you're new around these parts, I'll spare you this one.


Yes.

How about the search feature?



All of this leads me to...

Hmm...

 

<--- doesn't believe.

 

What don't you believe?

 

Nevermind, broham.

 

Alright, thanks for the help everyone. If anyone else has anything to add feel free to post.

 

Er...you may want to take Pmohr at his word....he's been here for quite a while and knows what he's talking about.

 

 

Ok so now I'm really confused. I went to Home Depot, asked for 10x1.25 studs and they said they don't know what that is. I think maybe I need the nuts. What size are those? Aren't they like 14mm or 16mm something like that? Is it even possible to change the bolts? HELP!

(I'm a super noob as you can tell since this is my 1st time doing the y-pipe)

 

What is so "A.S.A.P." about this??

 

I'm supposed to do it today. My friend is gonna help me and today is his only free day. Can you help me at all or no?

 

The head of the OE nut is 14mm, yes. But that's not the size. The complete size is 10x1.25. Shaft size is M10, thread pitch 1.25.

You don't need the studs, you already have studs in the cat and the stock exhaust manifolds. Just 8 nuts.

 

So when I go into there, all I gotta do is say I need 8 14mm nuts? Or do I gotta say that the shaft size is M10, and the thread pitch 1.25?

(sorry for asking so many questions)

 

14mm means nothing when you are getting random nuts from a hardware store. You need 8 10x1.25 nuts. Simple as that.

If they don't know what it is, then look for yourself.

 

Dont go to Home Depot or Sears. They will likely not have this metric size. Some will have 1.5 pitch, which will not fit.

If you have Advanced Auto Parts, go there, they have a stand of hardware, and it is reasonably prices as well. You need 10mm flange nuts with 1.25 thread pitch. The 14mm is the external size of nut/the socket you would use to remove it, but it does not matter if you get the same external size, so long as the nut threads on the bolt, you will be ok.
good luck,
Max

 

Ok thanx to the both of you, hopefully I can get the y on before it gets dark. **** The Depot, time to make a quick trip to AutoZone. I'll keep everyone updated on how the instal goes.

 

What kind of home depot do you go go? Mine has metric. I know because I bought some there...they just usually aren't right next to each other to avoid confusion.

 

After wasting my time going to Nissan dealer (they told me to go to auto parts store) and charged me $2 per nut, following a trip to Sears (this one only carried 1.5 pitch) and no flange nuts, following Home depot (waste of time) I was very impressed by local Advanced auto parts bolt and nut section. Reasonable priced and exactly what I needed. Both metric and inch sizes.
Thats just my observation, feel free to correct me.
Max
p.s. I did not say Home depot does not carry metric hardware, they do, just not the right type for this job

 

You're right, reading > me

 

Do the 5th gen's have the same size bolts too?

 

Home Depot is where you go to get stuff to fix your house, not your car. Go to an auto shop to get stuff for your car. I'm pretty sure the auto shop won't have much to help you fix your house. They're not stupid, they carry what's relevant to their purpose.

 

I figured I could get nuts at Home depot, cause you use nuts to fix some things in your house, but I guess not. Then I went to AutoZone, they didn't sell the nuts separately, Miele Auto Parts didn't have the size I needed, and finally I went to AutoPro and they had the bolts there (thank god). I should get the y put on tomorrow.

 

dont worry...its a piece of cake. 3/10 job

 

I'm not worried at all. Just anxious.

 

so once you cut the original bolts do they pretty much just fall out(i understand that they wouldnt just literally fall out)? or are the bolts welded in so you would have to tap them out?

 

On what, the cat? Those are threaded studs, but good luck ever getting them out. You'll probably have to blow them out with a torch.

 

so even once i cut the bolts from the exhaust manifold i need to torch out the old studs?

My plan
use dy grinder and cut out bolts on stock y-pipe. then....put in new one. i dont know I just figured the bolts would come out like any other bolt. I mean i know it's rusted and all but did most people have to tourch out the stud?

thank you for your input

 

What? No. Why would you want to replace the studs in the manifolds?

I said the studs in the cat will be seized in there.

 

ok so there are 3 bolts that are connecting the y-pipe and the exhaust manifold on both manifolds(for a total of 6 bolts) this is the part I am talking about. If I cut these will I have to torch out the head of the bolt?

 

They're not bolts, they are studs.

Assuming you cut them, then yes, you most likely would have to torch them out.

But two questions come to mind:

• Why, exactly, would you want to cut the nuts off of those studs?
• How in the hell do you plan on getting up there to cut the nuts off? There is zero room in there (no exaggeration...seriously) with the Y on.

 

yeh, good luck getting a dremel up there. honestly, those nuts shouldnt be as difficult to remove as the y-to-cat bolts (those will likely have to be torched off). what may happen tho is that a few of the whole studs will come out rather than just the nuts, which is no big deal anyways.

 

so what would you guys suggest as the best way to get off the studs?

I have 145k on my max and they are pretty freakin rusted out. the studs and nuts are pretty much fused together by rust. and if there is zero room how would you tourch them out?

 

Have you tried removing the nuts yet? The Y-manifold tend to be just fine, but the Y-cat are generally one piece.

You probably couldn't get a torch in there..even if you could, it'd be a bad idea with the manifold on the car.

So until you know whether or not you'll have issues removing the nuts, why are you so concerned with removing the studs?

 

I finally got it put on everybody. The nuts weren't hard to get off at all thanx to penetrating oil. Not even the y to cat nuts were hard to get off. The nuts all together took less than 10 mins to get off. The only thing that was semi-hard were the o2 sensor wires, but overall it wasn't that bad. Right away as soon as the car is started you can hear the deeper tone of the exhaust. Can't wait to get some increased gas mileage and also can't wait to floor it so I can feel and hear the extra horses. Thanx to everyone who helped me and I'm not gonna close this thread since someone is getting helped at the moment and this can be helpful for anyone else who is putting on their Warpspeed Y-Pipe. Ima upload sound clip from the engine/rear by this weekend. Once again thanx everybody.

 

i have one thing to say..when in doubt hit it them with some PB blaster like posted above and they will come out. just spray some on and wait a couple minutes and they should loosen right up.

 

wow, man, you are very lucky. I recently did 2 cat back jobs on my 95 se and fathers 97 GLE. The nuts between cat and b-pipe and muffler were fused on with rust. (New england winters) No amount of penetrating spray (even PB) helped. I ended up using grinder to cut off the nuts and then drilled through the studs. That was one b*tch of a job. Thankfully my y-pipe is still holding on.
So, did you end up putting new nuts on, or just reusing old ones?
Max

 

Man I sure was lucky. But yeah I ended up getting 8 new 10x1.25 stainless steel nuts. They fit perfect, and should make my life easier if I ever have to change the y-pipe again.