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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 11-21-2019, 03:28 PM   #1
mcnvgget
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header bolts

these are the bolts connected from the header to the overpipe, do other cars come with these no bead bolts? seems odd to me


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Old 11-21-2019, 03:57 PM   #2
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Interesting.......

I don't remember mine looking like that (17 BRZ).



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Old 11-21-2019, 03:59 PM   #3
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I just want to say those bolts were such a pain in the ass when installing aftermarket headers for me. I sprayed some lube oil in it and it didn't work. Not enough room for my impact driver. My breaker bar barely fit and it didn't even move it.


So I used oil + torch. It was still a tough job. The nut was seized on there still so the whole stud came off.
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Old 11-21-2019, 04:01 PM   #4
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Interesting.......

I don't remember mine looking like that (17 BRZ).



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mine is a 2018 toyota 86


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Old 11-21-2019, 04:28 PM   #5
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it's a common bolt. one end threads into the flange on one side and the other side is held via a nut.

Nissan has had this for their catalytic converters for the last 30+ years.
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Old 11-21-2019, 05:16 PM   #6
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I just want to say those bolts were such a pain in the ass when installing aftermarket headers for me. I sprayed some lube oil in it and it didn't work. Not enough room for my impact driver. My breaker bar barely fit and it didn't even move it.


So I used oil + torch. It was still a tough job. The nut was seized on there still so the whole stud came off.


how the hell you take it out? i have the header out and itís in the holes still, iím hammering it out and lubed it but itís not budging


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Old 11-21-2019, 05:52 PM   #7
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how the hell you take it out? i have the header out and itís in the holes still, iím hammering it out and lubed it but itís not budging


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The overpipe there that you posted? That's the one I had a hard time with.

One side came out easily, just undid it with a breaker bar. The other side was the one I was struggling with.

I ended up spraying a ton of penetrating lube on the bolt, wearing gloves I used one of those kitchen hand-held butane torches from my roommate and kept heating it.

I think the heat made the penetrating lube go deeper into the flange and the
heat loosen the stud a tiny bit. I used a breaker bar and kept pushing at it from underneath the car. In the end the Nut did not come off, I took the whole stud screw off with the nut still on.
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