Exhaust header for Mac49
- Thread starter Johnnydarkgt350
- Start date
You're darned right it's loud, but thanks for caring about the noise level ...as most civility has long since gone out the window.... 
Those were designed to race and run loud as the exhaust "header" is just a funnel (or a megaphone) for all intents and purposes lol.
You're going to need a 2-stroke compatible muffler system that fits the exhaust port.
Those were designed to race and run loud as the exhaust "header" is just a funnel (or a megaphone) for all intents and purposes lol.
You're going to need a 2-stroke compatible muffler system that fits the exhaust port.
There's a guy making really nice repops of the full Azusa header (with the end caps) and hardware for a very reasonable price. Unfortunately, he is only making them for the West Bend 820. But I've heard some chatter about him possibly doing them for the Macs. The trouble is there are a lot of different Macs out there.
BTW - Does anyone have a handy chart showing specs/ displacements on all the different Macs?
Another option could be just a little stub header to some flex-pipe to a muffler can of some sort. Don't know how that would look or effect power but the can could really quiet it down. And offer a lot of different mounting options.
Of course, whatever you do ... we will require a vid posted of you going WFO on it !
BTW - Does anyone have a handy chart showing specs/ displacements on all the different Macs?
Another option could be just a little stub header to some flex-pipe to a muffler can of some sort. Don't know how that would look or effect power but the can could really quiet it down. And offer a lot of different mounting options.
Of course, whatever you do ... we will require a vid posted of you going WFO on it !
Maybe this will help: https://www.ebay.com/itm/2854568338...4Be1QBma9UQq9mQHx5u1ywpUgn|tkp:Bk9SR7Tjo8f2Yg
Mac displacement - near the bottom of the link: https://www.vdm46.com/mcculloch.html
Tim Taft at Taft racing is working on producing all the Azusa two stroke exhaust headers, with cap and hardware for an additional cost.
power products, mcculloch, clinton and west bend 580 are in the works currently.
west bend 820 are available now, $75 with the cap and hardware.
quick google search will surface his contact information.
power products, mcculloch, clinton and west bend 580 are in the works currently.
west bend 820 are available now, $75 with the cap and hardware.
quick google search will surface his contact information.
https://www.ebay.com/sch/i.html?_fr...acobsen+snow+blower+exhaust+manifold&_sacat=0
These are ugly but there is a pipe to weld onto.
These are ugly but there is a pipe to weld onto.
Could really be anything welded up that fits the flange and bolt pattern on the engine {the key to all this} and put the most basic of "muffler" or spark arrestors on the end {always thinking of a Briggs #294599}.
You can search on fleabay for "2 stroke exhaust muffler" and you will find exhausts for small pit bikes and scooters in the same general engine size. Something like this could work if you hacksawed it into sections so it fit your bike, then welded it back together. You'd have to fabricate the flange of course:
Or this one perhaps, that uses a section of flexible steel weave: 2 Stroke Engine Viper Exhaust
You can search on fleabay for "2 stroke exhaust muffler" and you will find exhausts for small pit bikes and scooters in the same general engine size. Something like this could work if you hacksawed it into sections so it fit your bike, then welded it back together. You'd have to fabricate the flange of course:
Or this one perhaps, that uses a section of flexible steel weave: 2 Stroke Engine Viper Exhaust