Cobra Exhaust - Too Long - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Engine / Exhaust / Cooling
\ From the radiator, through the case and out
the exhaust. If it has to do with the cooling,
engine or exhaust, discuss it here!

 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 03-12-2007, 09:54 AM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
Unhappy Cobra Exhaust - Too Long

Hey Guys and Gals,

I bought a used set of Cobra slash cut pipes off eBay a couple of weeks ago. one pipe on each side like the factory exhaust.

When I tried to install them this weekend the mouting tab on the muffler was at least 1/2" past the mounting hole on the bike.

Before I start cutting down my header pipes to make this work I wanted know if anyone else has had this problem with Cobra pipes?

Also curious if the rear header that was supplied with the pipes is suppose to be chromed because the one that I got wasn't?
JamieB is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 03-12-2007, 02:30 PM
and the Adventure Cycle
 
hyperbuzzin's Avatar
 
Join Date: Jun 2004
Location: Western PA
Posts: 6,138
iTrader: (1)
   
Well, I think the pipes on mine are Cobra's (were on the bike when I got it)
I'm just getting ready to head to work now, but will look at it afterwards and let ya know what the mounting tab looks like (unless ya hear from others before then)
Is that for the right/left or both sides?

Also, the rear headpipe on mine was chrome, but has discolored considerably.
Could your have done the same? Or are they new pipes?


AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC


"When life throws you curves,
Aim for the apex."

Author Unknown
hyperbuzzin is offline  
post #3 of 10 (permalink) Old 03-12-2007, 02:52 PM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
I am having the problem with both sides.

The pipes are used but looking at them I think only the right side (front cylinder) was ever installed. The left piece slides onto the header way to easy and there are no clamp marks.

The header pipe I got with it looks brand new but never chromed. I not to worried about it though. If the pipes work I plan on modifying the factory heat shield to cover the pipe.

The tabs look okay but maybe they were just welded in the wrong spot. A friday afternoon production run.

I don't have a problem cutting down the header pipes the 1/2" to 1", just wanted to see if anyone else had this problem before I took a saw to a part of my bike.
JamieB is offline  
 
post #4 of 10 (permalink) Old 03-13-2007, 10:32 AM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
I am guessing by the number people that have looked at the post and not responded that I am the first to have this problem. No biggie.

Of the people here that have or use to have cobra exhaust.
Did you like the sound and/or look?
JamieB is offline  
post #5 of 10 (permalink) Old 03-13-2007, 02:34 PM
and the Adventure Cycle
 
hyperbuzzin's Avatar
 
Join Date: Jun 2004
Location: Western PA
Posts: 6,138
iTrader: (1)
   
Well, looking at mine, it doesn't look like there was a fitmant issue.
The mounting tabs are straight inline with the mounting hole on the bike. But like I said, they were on the bike when I got it so ???
Are you sure the mufflers are seated on the headpipes all the way?

As for the sound, I like it. Kinda loud, but not overpowering. No problems at inspection time. I do have the decel popping that some people aren't too fond of, but I like that too.
I haven't tried adjusting the carbs at all to stop it.


AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC


"When life throws you curves,
Aim for the apex."

Author Unknown

Last edited by hyperbuzzin; 03-13-2007 at 02:37 PM.
hyperbuzzin is offline  
post #6 of 10 (permalink) Old 03-13-2007, 02:52 PM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
Hyperbuzzin,

Thanks for the help. I think I am going bolt them up tonight and run the bike for a little bit to make sure I like the sound before I start cutting.

Ran it a little last night with no pipes. Not as long as a car with no exhaust but plently loud enough.

Did the ear shave so I have rejetted the carbs for that and set the fuel mixture setting to 2-1/2 turns. Assuming I have no leaks in the exhaust that should prevent the popping.

Not that it bothers me either. The bike has popped since I bought three years ago.
JamieB is offline  
post #7 of 10 (permalink) Old 03-13-2007, 02:57 PM
Geek
 
rnewell's Avatar
 
Join Date: Mar 2006
Location: New Jersey
Posts: 872
iTrader: (0)
 
When I put my exhaust on the pipes were very tight. I had to tap them on with a rubber mallot.

Ron from Jersey
2005 VN750
HellFire windshield
Kaw extended backrest
Cobra exhaust
Re-located stator wires
Side bags
15,000 Miles July/2012
It's PAID OFF ! May 2009
rnewell is offline  
post #8 of 10 (permalink) Old 03-13-2007, 03:14 PM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
I thought I had them bottomed out but maybe not. I will have to take some measurements tonight and see if I am getting the tubes pushed all the way together or if I am just hitting a hard spot.
JamieB is offline  
post #9 of 10 (permalink) Old 03-14-2007, 09:50 AM Thread Starter
 
Join Date: Oct 2006
Posts: 158
iTrader: (3)
 
Got the pipes installed last night. Sanded the header tubes to make sure there were not burrs. Then pushed and pryed until I was able to get the mounting tab over the bolt. Tighten everything up. Looks good Sounds good. Now I just need to modify the heat shield on the right side to work with the new exhaust.
JamieB is offline  
post #10 of 10 (permalink) Old 03-14-2007, 01:49 PM
and the Adventure Cycle
 
hyperbuzzin's Avatar
 
Join Date: Jun 2004
Location: Western PA
Posts: 6,138
iTrader: (1)
   
Good to hear ya didn't have to cut them, and like the sound.
My pipes didn't have any heat shields on them when I got it. Ended up getting some aftermarket ones, but it'd be nice to see what a stock set of shields look like on the bike. Post some pics if/when ya can


AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC


"When life throws you curves,
Aim for the apex."

Author Unknown
hyperbuzzin is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome