Making it quieter

[MaximRider]

I have a Mac 4-1 exhaust and I want it to be quieter. Does anyone have a suggestion as to how I can do this? I only have 1 set of baffles to play with. I have thought of wrapping it in steel wool or maybe even drilling some more holes in the baffles. Would any of that work?

thanks for the help.

[Dennyz]

Here is what I did to my Jardine 4:1 that was too loud.



$40 R6 muffler from eBay
$2.00 adapter, some welding and a bit of exhaust pipe work
fabricated an aluminum hanger bracket to hold up the muffler.

Muffler has a soft deep idle tone, smooth deep tone upon acceleration, and totally quiet at cruise speeds. It gave my bike a big cc tuned exhaust sound.

[MaximRider]

That sounds great and looks good on your bike, but I want to stay away from the sport look. I am a cruiser by nature and want to keep the cruiser look as much as possible.

[cuda_phish1]

???

Hey Dennyz, I noticed you have vented rotors on your standard. WHere in sam hell did you find them???

[Ken Talbot]

Ha - his Dad did them for him! And I couldn't talk him into doing me a set when we met a Sid's place a couple of years back. Turns out it is actually not that hard to drill your own rotors .

[Robert Haller]

Dennyz,

That's a fine looking bike! Did you paint the engine black? If so, how did you do it, what type of paint?

[Dennyz]

motor painting

-Pulled the motor out of the frame (Did the carbs seperate).
-Duct taped all the ports closed.
-Scrubbed the motor with Simple Green several times.
-used compressed air to dry.
-used a couple of heat lamps to warm the motor up to around 70 degrees.
-Appied two cans of PJ1 Engine Case Paint.

I found it neccessary to place the motor on a sturdy table so it could be rotated and rolled around to get to every nook and cranny. I painted the bottom first, let it dry under the heat lamps, then did each side, and finished with the top and back.

The side covers are powder coated with an Eastman DIY power coating kit ($180.00).

I also powder coated just about everything that was chrome on the bike (fenders, turn signals, crash bars, head light ring, tail light assembly, fork shocks, muffler/buddy peg brackets, and foot levers). Gloss black powder cost around $20.

Everything has held up well (over 20K miles), except the fork shocks. Road sand and rocks pitted the black powder coating. I am now trying a softer black enamel. I think the best solution will end up being black mylar tape covering the leading edge of the fork shocks.

[stevec5000]

I don't know if it will work on a Mac but I installed Supertrapp rings and end cap on my Vance&Hines. The inside diameter of the opening was slightly over 4", same as a Supertrapp so I got a set of rings and cap on ebay, drilled 6 holes in the back and put in threaded inserts for the screws and put the Supertrapp parts on.
It's really not that much quieter but looks great!