Alright, this is it! The Jardine tapered exhaust mod.
I already have Jardine pipes, I just thought they could be louder, so I tried this and it worked great! The baffled area of the pipe works like a resonating chamber and adds a slightly deeper tone to the exhaust note compared to just a strait pipe.
When dealing with a tapered exhaust you just can’t take a holesaw and do your thing.
First you have to modify the holesaw bit, I used a 1 3/4 inch bit then had it lengthened, (Pics 1, 2 & 3) because the baffles on a Jardine pipe are attached deep on the inside too, about 14 inches into the pipe. I can’t weld worth a shit so modifying the holesaw wasn’t easy. I had to search for a while to find a machine shop that was willing to do the work, (they worried a bout getting it centered and balance properly) but luckily I found Giovanini’s. And it only cost 10 bucks!
$14 for the holesaw bit, and $10 to modify it + 1 1/2 hours (if by yourself and you take your time) = Cool Mod. :thumb:
I have a dB meter ordered, so I'll have readings posted next week.
I DO NOT recommend this mod for states where your bike is inspected.
Step one – Remove the pipes from the bike, this isn’t something I recommend you do with them still on.
Step two – Take and drill out the baffle, you have to go slow, these bits cut metal best at a medium speed. Don’t push because once you break through you have another to cut on the inside. Be really careful not to push on the last one or you’ll go through the end of the pipe, and that’s a bad thing.
Step three – Remove the baffle from the pipe, and then tip the pipe on end to remove any shavings.
Step four – Repeat steps one through three for the second pipe.
Step five – Put you exhaust back on your bike.
Step six – Enjoy the loudness!
This is the same as running strait pipes so don’t forget to re-jet your carbs.