GTV 380 BAFFLES

[bazit]

Hi
Could anyone out there tell me if the exhaust baffles on a GT380 (1973) have to have wadding wrapped around them ?
Barry

[GT750Battleship]

Barry,the first thing I do with new baffles is remove the wadding,it serves no real purpose..apart from make the bike a little less noisy After awhile the wadding gets saturated with two stroke oil & starts falling to pieces,so best to dispense with it..in my humble opinion
Cheers,
Roger
Suzuki GT750A

[Craig380]

+1 to the above. No wadding really needed on standard exhausts, but it is strongly recommended if you have expansion chambers, to avoid annoying the neighbours

[bazit]

Great
Off with the wadding

[Coyote]

I disagree. The wadding gives the exhaust a nice mellow tone. You want noise? Buy a Harley. The world's best known way to turn fossil fuel into noise.

[Alan H]

My 550 sound really well without wadding. Quiet 2 strokes? Why bother.

[Vintageman]

I have used heat wrap stuff you see guys put on outside of exhaust pipes for example. It does not really absorb sound like two stroke wadding but, covering the holes will change the sound and makes it a little crisper me thinks.

[tz375]

An unmuffled two stroke is perhaps the most annoying sound on the planet.

The packing does take a little of the edge off the noise and suppresses top end notes to make a for a slightly more mellow tone. If it's too tight it acts makes the baffle more like a solid tube and noise goes up.

We don't need any more noise to piss people off IMHO. Mellow and crisp are good, noisy freeking poppin' and bangin' - not so much. Our race bikes are probably quieter than some street bikes and sound crisp and clean. Full on race Honda 500GP bike for example sounds way better, and quieter, than a GT with chambers making lots of noise and no power.

But ask me what i really think...

[Vintageman]

Four strokes make so much more noise. You can hear them for miles and being deeper, lower frequency, sound comes from all directions and hurts to the bone. Being low freq its hard to dampen the sound with other objects. Two strokes are much higher freq, sound directional and get damped out by other object in a shorter distance than 4 strokes.

What is unfriendly about these 2 stroke things is the pollution. Yes there is smoke. Pls use smokeless oil. It is the fact a lot of fuel short circuits right from transfer out exhaust. I am very careful to make sure I don't pull out in front of a line of cars. I let them pass first. Also if there's traffic wanting to speed faster than I, I pull over when safe and let all pass. I try to stay away from busy roads or times when they are. Its the pollution if not careful will get us in trouble from the green police. You can back of throttle for noise but no way to hide the fumes. Have you followed a friend on one of these lately?

If you reduce the hole size of the baffle (on chambers) much more quit. Some designs have pipe dia too large and more noise than needs to be. All my bikes now have chambers, fresh wadding, smokeless scentless two stroke oil. I don’t want to loose the freedom. Chamber - Sound I am lucky and drive in areas not so populated. Most people I do pass when running brisk give me thumbs up where as people who have to follow me get angry

[JFISHSOLEVIBE]

Great question!

I'm about to mount up my old set of chambers on my 380 - JR power with the stinger style silencer on the end. Baffles are perforated rolled tubes. I'm not terribly worried about the amount of noise I'll generate, so will running without glass packing effect performance or just noise? Wouldn't mind leaving the wadding out completely

[tz375]

Both.

[Craig380]

Great question!

I'm about to mount up my old set of chambers on my 380 - JR power with the stinger style silencer on the end. Baffles are perforated rolled tubes. I'm not terribly worried about the amount of noise I'll generate, so will running without glass packing effect performance or just noise? Wouldn't mind leaving the wadding out completely

My own JRs are L O U D without any packing - actually too loud to be comfortable to me as a rider, let alone anyone else ... what I do with mine is wrap some MX fibre wadding around the perforated tube with wire, then a layer of coarse wire wool around the wadding, then stuff it all into the pipe. The wire wool packs out the ID of the pipe and stops the baffle rattling against the internal spring.

[JFISHSOLEVIBE]

Craig, I think I'll have to take your advice since I DO have neighbors haha.

What sort of wire wool are you using? Anything special?

[tz375]

Word of warning with wire wool. It burns really well if it's hot and oily.

Best to buy a pack of MX 2 stroke muffler packing.

http://www.ebay.com/itm/like/380797318961?lpid=82" onclick="window.open(this.href);return false;

[Suzsmokeyallan]

I only wrap the upper bigger baffles, the two lower ones I leave unwrapped as the pressure through them is very small. MX padding sheets about a 1/4 inch thick works well with copper wire to hold it in place.