My First Mod for the New Year

Easy Rider · 04-07-2008, 08:14 PM

Will be to UNDO one from last year.

Last year I drilled the back plate on the muffler. Did it late in the year and didn't notice too much difference. WELL......the first couple of rides this spring I noticed a plusating sound at one intermediate RPM range (in all gears). Then I noticed that it rumbles at cruising speed. Both things are very annoying.

Out comes that tap set and the stainless steel bolts. It's back to stock for me.

Looks like the only permanent change I will have is the 16T front sprocket (unless you count the windshield).

rayzuki · 04-07-2008, 10:02 PM

I was waiting for this before I went and drilled holes in mine. Wasn't sure how it would sound. I won't be doing it after all.

**jonathan180iq** · 04-08-2008, 08:35 AM

Probably sounds like a muffler with holes in it....

I made the mistake of punching the baffles once. I'll never do it again and I adivse everyone in hearshot to heed to warning.
It really sounds cheap. If you get the urge for more sounds at least buy a slip-on muffler and do it right.

Easy Rider · 04-08-2008, 09:01 AM

Quote:

Originally Posted by jonathan180iq

Probably sounds like a muffler with holes in it....

Ya think ?? :lol:

:blush: :neener:

trykemike · 04-08-2008, 12:05 PM

I just drilled 4 7/32 holes inside the ring 1 inch from centre exhaust outlet equally spaced. My valve clearances are near the top of spec exhaust .004 and intake .0025.

I noticed a little glasspack type sound when down shifting and letting off the gas. Overall a little more sound but different.

The engine seems to rev more freely. I have a tach and have to watch or 8000 rpms comes very fast now.

I need more time before the final verdict.

Sounds more sporty now.

Idle approx 1500 rpm.

**jonathan180iq** · 04-08-2008, 03:21 PM

Can you be the guy to post a photo so people will stop requesting them and I can have a place to refer them?

04-07-2008, 08:14 PM	#1
Easy Rider Senior Member Join Date: May 2007 Location: Champaign, Illinois Posts: 4,561	My First Mod for the New Year Will be to UNDO one from last year. Last year I drilled the back plate on the muffler. Did it late in the year and didn't notice too much difference. WELL......the first couple of rides this spring I noticed a plusating sound at one intermediate RPM range (in all gears). Then I noticed that it rumbles at cruising speed. Both things are very annoying. Out comes that tap set and the stainless steel bolts. It's back to stock for me. Looks like the only permanent change I will have is the 16T front sprocket (unless you count the windshield). __________________ Loud pipes risk rights! Login or Register to Remove Ads
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04-07-2008, 10:02 PM	#2
rayzuki Senior Member Join Date: Nov 2007 Location: portland, or Posts: 154	I was waiting for this before I went and drilled holes in mine. Wasn't sure how it would sound. I won't be doing it after all. __________________ Yeah, I'm about as useful as a condom dispenser in the vatican. -- Jonathan
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04-08-2008, 08:35 AM	#3
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Probably sounds like a muffler with holes in it.... I made the mistake of punching the baffles once. I'll never do it again and I adivse everyone in hearshot to heed to warning. It really sounds cheap. If you get the urge for more sounds at least buy a slip-on muffler and do it right. Login or Register to Remove Ads
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04-08-2008, 12:05 PM	#5
trykemike Senior Member Join Date: May 2007 Location: toronto ont canada Posts: 177	drilled exhaust I just drilled 4 7/32 holes inside the ring 1 inch from centre exhaust outlet equally spaced. My valve clearances are near the top of spec exhaust .004 and intake .0025. I noticed a little glasspack type sound when down shifting and letting off the gas. Overall a little more sound but different. The engine seems to rev more freely. I have a tach and have to watch or 8000 rpms comes very fast now. I need more time before the final verdict. Sounds more sporty now. Idle approx 1500 rpm. __________________ sds4 Login or Register to Remove Ads
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04-08-2008, 03:21 PM	#6
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Can you be the guy to post a photo so people will stop requesting them and I can have a place to refer them?
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