Stock muffler baffels
#1
01-23-2015, 05:41 PM
Join Date: Apr 2013
Location: cumming, ga
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#2
01-23-2015, 05:50 PM
#3
01-23-2015, 07:05 PM
I did this mod on my 2013 '48.
I really enjoy this guys videos.
A 1/2" hole in the center did sound better and no power was lost.
Actually picked up a little mid range power improvement.
I then thought to my self , why not go bigger?
Next I drilled them out to 3/4" and they sounded pretty awfull , a "squirt" kinda sound was present that bugged me.
I went further afterwards , but that's another thread.
The 1/2" sounds pretty good and won't drive your neighbors crazy.
Best thing is you don't have to remove them to do this mod.
Mick
A 1/2" hole in the center did sound better and no power was lost.
Actually picked up a little mid range power improvement.
I then thought to my self , why not go bigger?
Next I drilled them out to 3/4" and they sounded pretty awfull , a "squirt" kinda sound was present that bugged me.
I went further afterwards , but that's another thread.
The 1/2" sounds pretty good and won't drive your neighbors crazy.
Best thing is you don't have to remove them to do this mod.
Mick
#4
01-24-2015, 04:00 AM
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Join Date: Nov 2010
Location: Red Banks, Mississippi
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I did this mod on my 2013 '48.
How to Modify Stock Harley Mufflers! - Iron 883 | ShopTalk - YouTube
I really enjoy this guys videos.
A 1/2" hole in the center did sound better and no power was lost.
Actually picked up a little mid range power improvement.
I then thought to my self , why not go bigger?
Next I drilled them out to 3/4" and they sounded pretty awfull , a "squirt" kinda sound was present that bugged me.
I went further afterwards , but that's another thread.
The 1/2" sounds pretty good and won't drive your neighbors crazy.
Best thing is you don't have to remove them to do this mod.
Mick
How to Modify Stock Harley Mufflers! - Iron 883 | ShopTalk - YouTube
I really enjoy this guys videos.
A 1/2" hole in the center did sound better and no power was lost.
Actually picked up a little mid range power improvement.
I then thought to my self , why not go bigger?
Next I drilled them out to 3/4" and they sounded pretty awfull , a "squirt" kinda sound was present that bugged me.
I went further afterwards , but that's another thread.
The 1/2" sounds pretty good and won't drive your neighbors crazy.
Best thing is you don't have to remove them to do this mod.
Mick
#5
01-24-2015, 04:44 AM
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#7
01-24-2015, 09:17 AM
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#8
01-24-2015, 09:27 AM
About 90% of the shavings go towards the rear , I just let it idle for a few seconds to clear the rest.
You could do better to put a dab of grease on the drill tip and probably get more control of the chips.
What I did find eventually is that a 1 3/4" hole saw allows the removal of the complete baffle assembly if it's a non catalytic muffler.
This creates a standard sized exit port which doesn't produce the blast that a larger hole will make , allowing for some resistance to flow.
The 1 3/4" hole would enable someone to use a small TTI and have more control over the flow and sound as opposed to a gaping exit when done.
Mick
You could do better to put a dab of grease on the drill tip and probably get more control of the chips.
What I did find eventually is that a 1 3/4" hole saw allows the removal of the complete baffle assembly if it's a non catalytic muffler.
This creates a standard sized exit port which doesn't produce the blast that a larger hole will make , allowing for some resistance to flow.
The 1 3/4" hole would enable someone to use a small TTI and have more control over the flow and sound as opposed to a gaping exit when done.
Mick
#9
01-24-2015, 11:42 AM
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Join Date: Nov 2010
Location: Red Banks, Mississippi
Posts: 17,456
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About 90% of the shavings go towards the rear , I just let it idle for a few seconds to clear the rest.
You could do better to put a dab of grease on the drill tip and probably get more control of the chips.
What I did find eventually is that a 1 3/4" hole saw allows the removal of the complete baffle assembly if it's a non catalytic muffler.
This creates a standard sized exit port which doesn't produce the blast that a larger hole will make , allowing for some resistance to flow.
The 1 3/4" hole would enable someone to use a small TTI and have more control over the flow and sound as opposed to a gaping exit when done.
Mick
You could do better to put a dab of grease on the drill tip and probably get more control of the chips.
What I did find eventually is that a 1 3/4" hole saw allows the removal of the complete baffle assembly if it's a non catalytic muffler.
This creates a standard sized exit port which doesn't produce the blast that a larger hole will make , allowing for some resistance to flow.
The 1 3/4" hole would enable someone to use a small TTI and have more control over the flow and sound as opposed to a gaping exit when done.
Mick
My concern is that reversion is a strong force. Wouldn't want any metal dust getting back up to the exhaust valves. Probability is very low, I just tend to error on better safe than sorry.
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