Crank Case Rattle - 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 8 (permalink) Old 08-07-2011, 11:25 AM Thread Starter
Junior Member
 
Join Date: Apr 2011
Posts: 2
iTrader: (0)
 
Crank Case Rattle

I'm new to this and not sure if this has been covered before, but I'm getting a
rattle that sounds like it's coming from the crank case area. I hear it when the engine is warmed up at higher RPMS. It's not a knocking, but sounds more like something is loose like a cable is whipping.
BrianBrant is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 08-07-2011, 11:27 AM
Old Truck Junkie
 
niterider's Avatar
 
Join Date: Jul 2007
Location: Roby Texas
Posts: 4,130
iTrader: (15)
 
Welcome, but I can't help you in that area.

02 honda sabre 1100
niterider is offline  
post #3 of 8 (permalink) Old 08-07-2011, 11:55 AM
Chucklehead
 
dragon159's Avatar
 
Join Date: Dec 2007
Location: Poynette WI
Posts: 1,050
iTrader: (3)
 
Two thoughts come to mind. First one being the cam chain, try the Grambo trick first with the acct. (Quick search should find it) The second would be the dampeners, which you should drain the oil and look for shavings. Other than that, One of us would have to hear it and diagnose.


BTW welcome to the madness!!

87 vn750at least that is what the frame #'s say
"Squirrel Bike" aka Jersey

Rat bike with a good PR agent

shaved and coastered
2 into 1 exhaust
rear 170 and front 110
Relocated R/R
custom dash with voltmeter
Spitfire windscreen
Plutonium plugs
Recovered seat without "butt hammers"
More to come
Praise to the Parts Goddess Crobins for needed things

When someone tells me "Great minds think alike" all I can think is "You Pervert"
dragon159 is offline  
 
post #4 of 8 (permalink) Old 08-07-2011, 12:01 PM
If only it had 6th gear..
 
DavesVulster's Avatar
 
Join Date: Jul 2011
Location: North of Boston
Posts: 1,100
iTrader: (1)
 
It is more than likely your rear automatic cam chain tensioner called ACCT. I've found that the front one when loose sounds like a tick or clack. The rear one made my bike sound like all the adjoining parts in the crankcase and tranny were bone dry and loose. After I fixed the front acct, I figured these were just noisey engines and I'd have to live with it but then after doing the rear one I couldn't believe how much quiter it is now. I'm on my phone and can't paste the links but if you search the forums, look for "grambo" method or fix (a free fix you can try now) or "TOC mcct" or the mod I just did "my acct to mcct conversion" a fix for less than 20 bucks to do both front and rear. Good luck,
Dave

Last edited by DavesVulster; 08-07-2011 at 12:08 PM.
DavesVulster is offline  
post #5 of 8 (permalink) Old 08-07-2011, 06:30 PM
Concert connoisseur
 
wib714's Avatar
 
Join Date: Apr 2008
Location: chillicothe, ohio
Posts: 2,231
iTrader: (3)
   
Garage
try taking the cap screw off the acct with the engine running and watch the screw inside and see if it jumps as you hear the noise. careful putting the capscrew on DO NOT OVERTIGHTEN IT, it only needs to be snugged up the metal is very soft.

1986 vn 750 aka "Huck Farley"
42,000 miles
Rick's stator and rr
Tuxedo stator cover mod
pickup coil mod
dampers replaced
agm m/f battery
Harley sportster exhaust, degoated
Hid conversion
splines lubed
custom "vn750.com" grill cover
NGK Iridium spark plugs


acct to mcct mod https://www.vn750.com/forum/showthread.php?t=17917

rekeying locks, https://www.vn750.com/forum/showthread.php?t=7309

stator replacement walkthrough, https://www.vn750.com/forum/showthread.php?t=11369
wib714 is offline  
post #6 of 8 (permalink) Old 08-11-2011, 06:13 PM Thread Starter
Junior Member
 
Join Date: Apr 2011
Posts: 2
iTrader: (0)
 
Heat Shield Rattle

Thanks for the replies guys. I took it to a local mechanic. The noise was a heat shield. Glad it was nothing a crowbar couldn't fix. Bike runs good and I'm back to riding with confidence knowing nothing is wrong. thanks again and ride safe
BrianBrant is offline  
post #7 of 8 (permalink) Old 08-11-2011, 11:19 PM
Senior Member
 
Join Date: Jan 2011
Location: West Texas
Posts: 103
iTrader: (0)
 
Why weren't the rest of us this lucky? LOL

The grambo works as does the TOC replacement kit. The kit made a huge difference and was easy to do in 30 minutes for both. they have a great website with video on how to do it.
keltec is offline  
post #8 of 8 (permalink) Old 08-11-2011, 11:30 PM
If only it had 6th gear..
 
DavesVulster's Avatar
 
Join Date: Jul 2011
Location: North of Boston
Posts: 1,100
iTrader: (1)
 
Hey man that's good news. Glad you're back in the wind.
DavesVulster 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