Lihgt knocking noise????eant some opinions

Sweet954RR · 03-06-2009, 9:49 AM

i recently bought a 98 superhawk with 30k on it and i believe the noise is the cylinder rocking in the bore? not sure tho here is a vid of the bike maybe you can hear it i listened to a couple other ones on you tuber and i found a couple others that had the same type of noise here is the vid YouTube - 100 4944 let me know what you guys think thanks cory

supermatt996 · 03-06-2009, 11:56 AM

Quote:

Originally Posted by Sweet954RR

i recently bought a 98 superhawk with 30k on it and i believe the noise is the cylinder rocking in the bore? not sure tho here is a vid of the bike maybe you can hear it i listened to a couple other ones on you tuber and i found a couple others that had the same type of noise here is the vid YouTube - 100 4944 let me know what you guys think thanks cory

when i took my hawk in to get my carbs rebuilt, jetted, and sync. the tech pointed out the same noise. its not as loud but i didnt notice it this being my first four stroke. they told me its a rod knock coming from the rear cylinder after they charged me for the carb work. my bike has about 32k on it maybe its just normal for these V-twins to crap out around 30k. i dont know which cylinder your having problems with sounded like the front but if its the rear maybe there is some kind of factor defect that hasent been addressed yet that pops up around set mileage

Jetpilot07 · 03-06-2009, 12:13 PM

if your running 87 octane in it, try running a little higher if this is happening while rideing, if it always does it, the it's gonna either be piston slap against the cylinder wall or a worn wrist pin.

Sweet954RR · 03-06-2009, 2:54 PM

it does it all the time and its comming from both cylinders but i dont feel anything when you put your hand on the motor anywhere....and it seems to run fine doesnt seem down on power but i guess i wouldnt know what they were like if this one is down on power since i never rhode one before hopefully its the piston slap or the wristpin i just bought the damn thing yest

Jetpilot07 · 03-06-2009, 5:23 PM

change the oil in it, make sure to use 10w-40...see if that quites it down some.

Sweet954RR · 03-07-2009, 10:02 PM

well the opil was clean i rhode it about 15 miles and the oil looked silver so i pulled the drain plug and sure enough it was silver...im afraid she needs to be rebuilt does anyone know where i can get a rebuild kit for this thing?

Jetpilot07 · 03-08-2009, 3:26 PM

go to cheapcycleparts.com you can purchase oem components from them....

CaptainCalf · 03-19-2009, 12:35 PM

I'd suggest changing the OEM CCTs to solve your problem:

Who wants CCT's - SuperHawk Forum

You should get many more miles outta that motor w/o major rebuild!

The OEM CCTs are known to fail, so manual CCTs are the way to go and that should stop the noise you're hearing cuz it's probably cam chain slap from them being too loose...RC

SeebyR · 03-21-2009, 8:47 AM

I agree with the above...i used to have a superhawk(called : Firestorm in the uk ).....CCT's are a weakness on these bikes and if they havent been changed by 20K change em or they will lunch your engine at some point....APE manual tensioners are the best available....or have your original ones converted with a coach bolt and locking nut.

Some of these bikes go for ages without the prob....but its not worth the aggro waiting for it to happen IMO....just change em dude

John'o