I know this is about the easiest install there could possibly be right? I was installing a racing beat catback this evening and the bolts that connect the RB muffler to the other pipe (the one that connects to the cat) do not seem long enough. Only about 2-3 threads poking though for the nut to grab. Even when the gasket compresses I don't think there will be enough bolt length for the threads to go completely though the nut. The other two bolts/nuts for the catback hanger fit correctly. I'm wondering if I got the correct hardware. The bolts have a "4" stamped on them. Not sure what grade they are supposed to be.

 

those bolts are just bolts, theyre not in high heat area so you can get away with ones from the local hardware store

 

get longer bolts?

 

The stock main cat has 2 studs on the flange to the stock cat-back, it's then held on with 2 nuts. Most aftermarket midpipes/highflow cats use 2-bolt flanges that you connect with bolts/nuts. This method is way better on the FD to clamp the flanges IMHO - the studs were used from the factory to make factory installation faster as far as I can tell.

Just get some good 12mm shaft size stainless bolts/nuts that are the appropriate length and you're good to go.

Are the bolts you are using ones that were on the car? I think the RB catback only comes with bolts to bolt the two halves of the catback together (which, BTW, they're the only company that does the exhaust in 2 parts - good idea as it makes for far cheaper shipping).

Dale (Mr. Exhaust )

 

Having put my RB on this weekend, I can say that the box came with two SETS of bolts. A long set and a short set, and the two that's needs for the stock exhaust hanger. I even have one extra gasket. The one thing that I didn't know I needed was the stock hanger, which was tossed when the PO installed the Tanabe CB.

Those studs are a PITA, my RB is just jury rigged on with open lugnuts (yes long story) until I can get it to muffler shop on Friday to torch out the old studs on the cat.

And I thought installing a CB was a 30min affair MAX.. hahaha

 

Thanks for the tip, Dale. I recently posted while struggling with the muffler studs. I was saved by tap and dye this time but flange nut and bolt looks like a good way to go next time I have to take it down.