This is topic muffler Drone? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Blownhatch (Member # 167) on :
 
What makes a muffler drone? like the more pipe you run past the muffler the less drone you get.. when i ran dumps, it drones major.
 
Posted by blind (Member # 3052) on :
 
it has to do with harmonics, like how an organ piano deal makes its different sounds with different length pipes.

as a general rule, the shorter the pipe is after the muffler the louder it will be, and the more it will drone.

also, chambered mufflers drone a lot more than straight through designed ones.
 
Posted by BlackDrop50 (Member # 1715) on :
 
flows + turndowns = major drone!

straight through mufflers + tailpipes = less/no drone!
 
Posted by BlackNGold (Member # 655) on :
 
quote:
Originally posted by BlackDrop50:
flows + turndowns = major drone!

straight through mufflers + tailpipes = less/no drone!
Not nessesarly true...I had 3 chamber Flows with tail pipes and they droned a lot less than when I had Borla's, but what you're saying is a good rule of thumb though.....
 
Posted by BlackDrop50 (Member # 1715) on :
 
quote:
Originally posted by BlackNGold:
quote:
Originally posted by BlackDrop50:
flows + turndowns = major drone!

straight through mufflers + tailpipes = less/no drone!
Not nessesarly true...I had 3 chamber Flows with tail pipes and they droned a lot less than when I had Borla's, but what you're saying is a good rule of thumb though.....
That's weird because I have 3 chamber flows on my drop and borlas on my hatch and the droptop drones a LOT. It annoys the hell out of me, and it's an auto, which = less drone than stick. The Borlas drone a little bit, but only around town. On the freeway they are as almost as quiet as stock. Maybe mine aren't broken in yet or something...?
 
Posted by 87 Saleen (Member # 1549) on :
 
In my 65' I had 2 chambers and turn downs. Pretty loud, pretty gay. I just got hooked up with some tail pipes and tips now, and now it drones, but is a lot fucking quiter.

It sounds a lot better to me also. Sounds more tuned and not as raw as before.


clifnotes:

2 chambers w/turndowns= loud zero drone, raw sound.
2 chambers w/tail pipes= more tuned and quiet [patriot]
 
Posted by The Nick (Member # 2244) on :
 
I've got 3 chambers and turndowns and it drones from 2100-2500, which is the freeway cruising range. It sucks, but you get used to it. I'd do tailpipes, but when the panhard and torque arm go on, I doubt it'd fit.
 




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