Quote:
Originally Posted by doctordoom
why does one need to use the springbolts on that section? can't you just continue to use the hardware that was included with the t1r b-pipe? i'm asking because i'm using the supplied hardware on mine.
edit: also, the reason i used the supplied hardware is because the representative i spoke with from aj-racing told me that all the hardware (gaskets, nuts, bolts) necessary for installation is included with the b-pipe.
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The springbolts allow for some flexibility around the b-pipe's donut gasket (on the outlet side). This is the same setup as on Subarus, except the donut gasket it located on the outlet side of the downpipe, not between the intermediate pipe and muffler.
The T1R b-pipe comes with the 5 bolts, 5 nuts, and 2 gaskets. I assumed that you would use 3 for the catpipe/b-pipe connection, and 2 for the b-pipe's midsection. I just reused the bolts already in the catpipe plus the original nuts, used 2 new bolts/nuts for the midsection, and used the extra bolts/nuts for the muffler. I ended up with one extra bolt and nut.
Ideally, I would rather use the Honda springbolts plus some nuts from a hardware store for the muffler section. Having a solid pipe setup from the testpipe all the way to the muffler seems like it would cause additional stress and introduce the potential for a leak. I'm not an engineer, but if Honda designed their exhaust system with flexibility in the back, I'd prefer to mimic that.
Anyway, I'm running mine the same as you, and so far so good. I was going to stop by the Honda dealership to see if they had nuts to mate up with the springbolts.
-Mike