Hmmm - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 9 (permalink) Old 02-08-2012, 11:46 PM Thread Starter
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Hmmm

Well i got bored the other night and decided to take the mufflers off my vulcan. Actually sounds AWESOME. it is a little poppy on deceleration however its faster than it was before. Im sure i can open up the fuel/air screw a bit to help. It still has plenty of back pressure with the goats belly. I actually liked it so much im taking the heat sheilds off and going to black exhaust wrap the pipes and put chrome tips on it.

2006 Vulcan 750
Bone stock for now

future plans:
Ape Hangers
exhaust
lower
slim down all the lights
Smaller seat


Let me know if you have anything i might need

GO GATORS!
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post #2 of 9 (permalink) Old 02-09-2012, 12:01 AM
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WHAT? I CAN'T HEAR YOU! SOME DUDE IN FLORIDA TOOK OFF HIS MUFFLERS.



Thank you for living so far from me the above need not apply.

You leaving the Goats Belly on though?

I think the only reason your bike seems faster is because it's 35 pounds lighter.......

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
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post #3 of 9 (permalink) Old 02-09-2012, 12:10 AM
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What did you say? And by the way you really need an airplane and I just happen to have a beautiful Skyhawk up for grabs!

04-3,200 miles bought July 2011 with 928 miles. Loaded with acessories to many to list here, see my albums for more details! I also make a custom tank bib specific for the 750 if anyone is interested, ck my albums for some pics.
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post #4 of 9 (permalink) Old 02-09-2012, 12:14 AM
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Quote:
Originally Posted by Knifemaker View Post
WHAT? I CAN'T HEAR YOU! SOME DUDE IN FLORIDA TOOK OFF HIS MUFFLERS.

1986 Black Kawasaki Vulcan VN750 "Black KAWK"
VN750 #9300 & VROC #33453

EMGO Handlebar, V&H Exhaust, Drop Shocks, Raised/Painted Fork, MeanStreak Seat, Tank Bib, ME880 Oversize Tires, Engine Guard, Custom Mirrors, Chris Products Turn Signals, Ear Shave, 150/42 Jets, PINGEL Fuel Valve, MCCT, Volt Meter, Shendegen R/R, AGM Battery, Coastered, .020 Coils, Relo Gauges & Headlamp, SilverStar Ultra, LED Flashing Brake Light, Center Stand Delete, WOLO Airhorn.
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post #5 of 9 (permalink) Old 02-09-2012, 09:54 AM
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I had mine off the other day after troubleshooting a popping issue I am having.
I have to admit, it has a really deep rumbling sound with just the goats belly on and no mufflers. My shed was actually vibrating, and the wife came out of the house to see what was going on....lol

I like the deep rumble, but once you have the mufflers on, it silences most of it. I was considering slip ons, but might try to remove the inner screens on the muffler first and drill a few holes in the rear of the muffler.

With the belly in place, it has plenty of back pressure and seems to run better than just straight pipes, which makes a crisper (and louder) sound than the rumble of the pre-muffler.
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post #6 of 9 (permalink) Old 02-09-2012, 11:49 AM
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I have the mufflers off of mine and love the sound. I'm gonna check on a couple of 90 degree elbows to use as turn outs.

2000 VN 750
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post #7 of 9 (permalink) Old 02-09-2012, 02:04 PM
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Really AWESOME Helmdog, you're neighbors are really going to notice you now! And hey, the maximum fine is $500.00

~~C8> Ratt
________________________
'91 VN750 - Cosmic Splendor/Candy Wine
Done: Coastered, .020 ign., Iridiums, VM
Plexistar II, MCCT's, Relocated MOSFET
Next: LED's
Will Do: Horns, Shave(maybe)
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post #8 of 9 (permalink) Old 02-09-2012, 06:51 PM
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I took the mufflers off of my bike and bought some pipe from autozone, cut some angles in the tips, and welded them onto the goat. That popping sound on deceleration will grow on you. Mine sounded like guns going off. Loved it.
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post #9 of 9 (permalink) Old 02-16-2012, 02:00 AM
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While I was reinstalling the stock system on mine, I did start it up without the mufflers. I loved the sound at idle, but it would have been too loud at full throttle. I'm not out trying to blow someones eardrums out. And that nice throaty sound at idle becomes absolutely horrible on the highway. Just try it.

Also, by removing the mufflers, you are lowering the backpressure, and probably more than you might think. Rejetting will help compensate for it, but you will never get the mixture right across the entire usable rpm range. The one limitation to carbs I have found, is that they are only tunable over a small range. when the backpressure varies widely from idle to highway cruising speed, which it will without the mufflers, the carbs simply do not have the tuning range to cover all of it. You will be too rich in some spots, and too lean in others.

I just love the things these backyard engineers come up with. And I feel sorry for all those poor Vulcan 750s that become the victims of backyard engineering.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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