JT Si
Senior Member
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- #1
I finally got around to installing the dirt cheap Yonaka Civic Si exhaust I pre-ordered a while ago and it doesn't bolt up.
The mid-pipe flange is so thick the factory frontpipe studs are not long enough to thread the nuts back on.
I looked around at other exhausts and they all appear to have solved this problem. 27Won gives special stepped nuts that recess into the flange to achieve threading. Takeda has milled the flange corners thinner around the holes so the factory studs like through sufficiently. Another brand made the flange out of thin metal similar to the OEM design.
Yonaka did provide hardware, but it's just a bunch of regular nuts and bolts. I'm going to contact them ASAP but I don't have any idea how they expected this to bolt up.
Does anyone know if the frontpipe studs are easily removable? It didn't look like it, and that's the only way I can think of to make this work - remove the frontpipe's studs and drill the holes out large enough to feed the Yonaka bolts through.
If that's the intended installation, that is far from "bolts up to OEM" as advertised.
Does anyone have any ideas? There were no instructions provided on the website or in the box.
I tried searching for nuts similar to what 27Won provides but I came up short.
As a side note the hanger for the mid-pipe doesn't fit the OEM hanger correctly, either. I'm starting to regret buying cheap.
The mid-pipe flange is so thick the factory frontpipe studs are not long enough to thread the nuts back on.
I looked around at other exhausts and they all appear to have solved this problem. 27Won gives special stepped nuts that recess into the flange to achieve threading. Takeda has milled the flange corners thinner around the holes so the factory studs like through sufficiently. Another brand made the flange out of thin metal similar to the OEM design.
Yonaka did provide hardware, but it's just a bunch of regular nuts and bolts. I'm going to contact them ASAP but I don't have any idea how they expected this to bolt up.
Does anyone know if the frontpipe studs are easily removable? It didn't look like it, and that's the only way I can think of to make this work - remove the frontpipe's studs and drill the holes out large enough to feed the Yonaka bolts through.
If that's the intended installation, that is far from "bolts up to OEM" as advertised.
Does anyone have any ideas? There were no instructions provided on the website or in the box.
I tried searching for nuts similar to what 27Won provides but I came up short.
As a side note the hanger for the mid-pipe doesn't fit the OEM hanger correctly, either. I'm starting to regret buying cheap.
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