Author Topic: Cam chain rattle [WAS: Bit O Piston Slap?] (Read 9458 times)

pothole · « **on:** January 21, 2015, 07:24:15 PM »

'12, purchased new Oct. '13. 11k miles. No issues, just what I believe to be temporary piston slappage upon cold start. Disappears 10 seconds or so. Was a Honda auto tech for 100 years, lots of 90's engines did the same with no problems, except customer complaints. Did replace some pistons and some re-bores, problem solved SOMETIMES. Anyone with this noise? All normal otherwise. 2.5k oil changes,10-40, 20-50, doesn't matter. Don't really worry 'bout it, just curious, just continue to pound it. Thoughts?

Deziner · « **Reply #1 on:** January 21, 2015, 07:53:27 PM »

Try doing a search for "cam chain tensioner"

VirginiaJim · « **Reply #2 on:** January 21, 2015, 08:01:21 PM »

More like cam chain slap...totally normal. If you don't like it, get an APE.

pothole · « **Reply #3 on:** January 21, 2015, 09:20:35 PM »

Thanks. Just replaced the hydraulics on my VTR with mechanical, never thought about it on the C14 so soon? Will search, thanks guys.

stevewfl · « **Reply #4 on:** January 21, 2015, 09:38:24 PM »

Mine starts out kicking and slapping, then the mad pow-ah of KiPass straightens it out within a few seconds before going over the rest of my bike. This happens upon start-up before each flight

The Pope · « **Reply #5 on:** January 22, 2015, 03:26:25 AM »

Quote from: VirginiaJim on January 21, 2015, 08:01:21 PM

More like cam chain slap...totally normal. If you don't like it, get an APE.

Quote from: pothole on January 21, 2015, 09:20:35 PM

Thanks. Just replaced the hydraulics on my VTR with mechanical, never thought about it on the C14 so soon? Will search, thanks guys.

Here's a link to an APE : http://www.streetandcomp.com/store/itemdesc.asp?ic=42%2D9KTZX14&eq=&Tp=

Rhino · « **Reply #6 on:** January 22, 2015, 09:07:46 AM »

Do yourself a favor and spend $50 and 20 minutes of time and get an ape. Not having to listen to that caterwauling every startup is well worth it.

tomp · « **Reply #7 on:** January 22, 2015, 01:13:27 PM »

My 08 make a little rattle upon first of day start up, for maybe 2 seconds. Been told here to ignore i,t as it wasn't problem causing. That's what I've done. No biggie to me. tp

Rhino · « **Reply #8 on:** January 22, 2015, 01:36:57 PM »

Mine rattled for 10-15 seconds every startup hot or cold. Now fixed.

B.D.F. · « **Reply #9 on:** January 22, 2015, 02:21:55 PM »

A well- known situation on the C-14. It is not piston slap, it is the cam chain rattling against the engine case when the bike is started after sitting for a while. Lots of info. about it, and some photos of why it happens have been posted; the original thread vaporized in the great forumnami of 2011 but there is some info. / photos here: http://www.zggtr.org/index.php?topic=14243.msg174886#msg174886

Brian

Quote from: pothole on January 21, 2015, 07:24:15 PM

'12, purchased new Oct. '13. 11k miles. No issues, just what I believe to be temporary piston slappage upon cold start. Disappears 10 seconds or so. Was a Honda auto tech for 100 years, lots of 90's engines did the same with no problems, except customer complaints. Did replace some pistons and some re-bores, problem solved SOMETIMES. Anyone with this noise? All normal otherwise. 2.5k oil changes,10-40, 20-50, doesn't matter. Don't really worry 'bout it, just curious, just continue to pound it. Thoughts?

pothole · « **Reply #10 on:** January 22, 2015, 09:55:05 PM »

It is a bit annoying, mostly to others. "WTF is that clankin'?" Used Kriegers on the VTR, two req'd, nicely made. A bit trickier on the v-twin. Came with gaskets, too. I'll decide soon whether or not to replace it. Thanks again everyone.

connie14boy · « **Reply #11 on:** January 23, 2015, 12:28:14 AM »

Quote from: Rhino on January 22, 2015, 09:07:46 AM

Do yourself a favor and spend $50 and 20 minutes of time and get an ape. Not having to listen to that caterwauling every startup is well worth it.

I will consider doing this next as the rattling is the only thing that totally pisses me off every time I start the engine. Now that you promise it only takes 20 minutes, I'm in.

VirginiaJim · « **Reply #12 on:** January 23, 2015, 04:44:01 AM »

I'm not 'fixing' it. I like the noise. Makes me feel like I'm alive....well, that and the vodka (obligatory disclaimer - not whilst I'm riding, of course)

PH14 · « **Reply #13 on:** January 23, 2015, 09:28:15 AM »

Quote from: VirginiaJim on January 23, 2015, 04:44:01 AM

I'm not 'fixing' it. I like the noise. Makes me feel like I'm alive....well, that and the vodka (obligatory disclaimer - not whilst I'm riding, of course)

Yeah, I think it is a non-issue. The noise, not the vodka, although I will stick with a good red wine or a nice IPA.

Rhino · « **Reply #14 on:** January 23, 2015, 09:29:03 AM »

Quote from: connie14boy on January 23, 2015, 12:28:14 AM

I will consider doing this next as the rattling is the only thing that totally pisses me off every time I start the engine. Now that you promise it only takes 20 minutes, I'm in.

Disclaimer: My APE did not come with any instructions. Videos I looked at had you finding top dead center on the engine first. I assume that was to find minimum tension on the chain. I didn't do the thing with finding TDC. Totally unnecessary IMO. Pull the OEM CCT out. On the APE CCT turn the adjuster bolt out to match the length of the OEM CCT with the plunger pushed in. With no CCT installed make sure you do not turn the engine at all. Install the APE. Turn the adjuster in by hand (no wrench) until you cannot turn it anymore. Back it out a turn. Start the bike. With the engine running, turn the adjuster in by hand until it gets tight and back it out 1/2 turn. Now use 2 wrenches to tighten the lock nut without moving the adjuster. If you remove the engine cover to find TDC it will take more than 20 min. Also takes some time to remove the right side mid faring.

Disclaimer #2: use these instructions at your own risk.

stevewfl · « **Reply #15 on:** January 23, 2015, 10:09:07 AM »

That clunky noise reminds me every time I start my bike that it was designed by Kawasaki

VirginiaJim · « **Reply #16 on:** January 23, 2015, 01:04:12 PM »

Quote from: Rhino on January 23, 2015, 09:29:03 AM

Disclaimer: My APE did not come with any instructions.

Neither did these and look what happened..

http://youtu.be/BAZ_0tvqZbM

Quote from: stevewfl on January 23, 2015, 10:09:07 AM

That clunky noise reminds me every time I start my bike that it was designed by Kawasaki

For 90k essentially trouble free miles or more....don't forget that part.

gPink · « **Reply #17 on:** January 23, 2015, 01:22:41 PM »

...and only if your fob is fresh.

Deziner · « **Reply #18 on:** January 23, 2015, 01:33:48 PM »

Quote from: VirginiaJim on January 23, 2015, 01:04:12 PM

Neither did these and look what happened..

http://youtu.be/BAZ_0tvqZbM

For 90k essentially trouble free miles or more....don't forget that part.

If you view the clip backwards you'll find an extensive explanation of how KIPASS was integrated to bring the apes to "life". Just like the Concours.......

elp_jc · « **Reply #19 on:** January 23, 2015, 01:50:00 PM »

Quote from: Rhino on January 23, 2015, 09:29:03 AM

Disclaimer #2: use these instructions at your own risk.

I used your method on the Hayabusa, when it had CCT problems back in 2000, and most owners installed an APE CCT while waiting for a cure. But it's not ideal to have a fully-manual device in there IMO, even for us who know what we're doing. And you need to adjust it periodically, just like if you had chain final drive... especially when bike is new (more stretch). The best solution is what Suzuki did with the redesigned CCT, which added a ratcheting mechanism; no more chain-slapping noise ever. Is Kawasaki still using oil-pressure alone??? Thought all bike manufacturers were using that proven oil-pressure/ratcheting design by now.

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Author Topic: Cam chain rattle [WAS: Bit O Piston Slap?] (Read 9458 times)

elp_jc