Cat bolts

[deerock]

thought id post this up here too, cause it will probably be over looked in the random section.
well, it happened. one of the cat bolts snapped. so i have this nice new exhaust and exhaust leak! so anyone know if the bolt will just fall out, or am i gonna have to drill it out?

any ideas on the bolt size?

thanks!
Derek

[metalman]

Mazda part number 2306-13-456 appears to work, but double check that with your parts guy.

[metalman]

BTW, I am ordering some for another 1.6 cat, if you want I can add one stud and nut to the order. Theyre not cheap. As I recall about $4-6 each. And I think the nuts are $2-3 ea.
I will have to check that though.

[deerock]

ill keep that in mind, but my exhaust buddy said they usually keep bolts like that around the shop, but if i need one ill let you know. im calling him tomorrow afternoon.

[wildfire0310]

just drill it out and replace the broken stud with a bolt and nut instead.

[Atlanta93LE]

^ agreed. I replaced mine with stainless bolts/nuts, and they STILL all froze on me and needed cutting out.

[simontibbett]

Mine did the same thing, I cut them with a saw.

I just bought new ones from Lowes lol.

[metalman]

just drill it out and replace the broken stud with a bolt and nut instead.

Thats an option. It works better on 1.8 cats. On a 1.6 cat you must cut some of heat shield off to have access to both ends of the bolt. But it can be done.

[wildfire0310]

Thats an option. It works better on 1.8 cats. On a 1.6 cat you must cut some of heat shield off to have access to both ends of the bolt. But it can be done.

I did it on my 1.6 cat with out having to do that...That or maybe I don't remember cutting my heat shield.:biggrin:

Mike was there, I wonder if Mike remembers having to do that.

[simontibbett]

Yeah I don't have a heatshield, take that shiet off boy.

I have a nut and bolt from Lowes $1.30.

[metalman]

I did it on my 1.6 cat with out having to do that...That or maybe I don't remember cutting my heat shield.:biggrin:

Mike was there, I wonder if Mike remembers having to do that.

Maybe you have skinny fingers. :D

[wildfire0310]

Maybe you have skinny fingers. :D

That or I was missing the heat shield. Unfortunately I am unable to tell now days :rolleyes:.

Either way... Dereck..just drill out the stud and put int bolts. It will make your life easier if you ever have to remove your exhaust again.

[metalman]

That or I was missing the heat shield. Unfortunately I am unable to tell now days :rolleyes:.



Do you have a 1.8 car? That cat is completely different. No need for shield trimming.

[Doppelgänger]

IIRC Bryan, we took it to that exhaust shop so it could be taken out. You might have to grind down the back and knock it out. When I installed the new mid-pipe in Jenn's MSM, I got some really nice heat-treated heavy duty exhaust bolts/nuts/washers from Autozone....ask Ben about them. I think I spend like $7 for all of the hardware.

[wildfire0310]

Do you have a 1.8 car? That cat is completely different. No need for shield trimming.

Nope I have a 1.6 and had a 1.6 cat. I am currently running a 1.8 test pipe right now.

[deerock]

thanks everyone for your help, we just cut the ent of the cat off and welded a new flange to it, cause it was free! so its all good now, stainless nuts/bolts = FAIL.

[miataspeed69]

i broke both of mine and it was held in with c clamps. it worked well lol no leaking