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  • Cat bolts

    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
    "keep drifting fun......or else..." --Andy Sapp

  • #2
    Mazda part number 2306-13-456 appears to work, but double check that with your parts guy.
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    • #3
      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.
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      • #4
        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.
        "keep drifting fun......or else..." --Andy Sapp

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        • #5
          just drill it out and replace the broken stud with a bolt and nut instead.
          1988 323 GTX--- The toy now :D
          2008 Mazdaspeed 3::SOLD ----- 1991 BRG NA8 Swap, Turbo::SOLD

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          • #6
            ^ agreed. I replaced mine with stainless bolts/nuts, and they STILL all froze on me and needed cutting out.
            93LE | 9psi | 16g turbo | MSPNP w/ IAT, EBC, vTPS, HR10g | 11"x12"x3" core FMIC
            R-pkg Bilsteins | 300f/220r 2.5" springs | FCM sleeves/perches/mounts/bumps | frame rail reinf.
            4.10 Torsen | 2¼" Maganflow cat & ebay exhaust | Mishimoto rad

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            • #7
              Mine did the same thing, I cut them with a saw.

              I just bought new ones from Lowes lol.

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              • #8
                Originally posted by wildfire0310 View Post
                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.
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                • #9
                  Originally posted by metalman View Post
                  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.
                  1988 323 GTX--- The toy now :D
                  2008 Mazdaspeed 3::SOLD ----- 1991 BRG NA8 Swap, Turbo::SOLD

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                  • #10
                    Yeah I don't have a heatshield, take that shiet off boy.

                    I have a nut and bolt from Lowes $1.30.

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                    • #11
                      Originally posted by wildfire0310 View Post
                      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
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                      • #12
                        Originally posted by metalman View Post
                        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.
                        1988 323 GTX--- The toy now :D
                        2008 Mazdaspeed 3::SOLD ----- 1991 BRG NA8 Swap, Turbo::SOLD

                        Comment


                        • #13
                          Originally posted by wildfire0310 View Post
                          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.
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                          • #14
                            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.

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                            • #15
                              Originally posted by metalman View Post
                              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.
                              1988 323 GTX--- The toy now :D
                              2008 Mazdaspeed 3::SOLD ----- 1991 BRG NA8 Swap, Turbo::SOLD

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