Finally did MCCT conversion. Didn't help. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 20 (permalink) Old 08-02-2013, 06:13 PM Thread Starter
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Finally did MCCT conversion. Didn't help.

Well, I finally converted my ACCTs to MCCTs. They didn't help get rid of the noise.

I put the necessary bolts and nuts in the tensioners, installed them and tightened them by hand. Started the bike up and tightened them a little more with a wrench. The sound never went away, but the RPMs did start to go down, so I figured I tightened too much and backed them up again. Did this on both cylinders a couple of times and the same thing happened.

So... did I do something wrong or maybe this noise is just not the tensioners and it's something else? Could it be piston slap maybe? I have an old video of the bike running:

The video was taken 3 years ago and the bike is still the same. The noise hasn't changed, neither louder nor quieter.

http://www.youtube.com/watch?v=YMl0N7jhaQw

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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post #2 of 20 (permalink) Old 08-02-2013, 06:54 PM
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That does not sound right to me. Check the petcock! I had a really loud tick that turned out to be the spring in the petcock slapping closed. It echoed through the tank and was really annoying @ lights. I just replaced it, but I could have done a rebuild.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #3 of 20 (permalink) Old 08-02-2013, 07:33 PM
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Haqve you pulled the screen out of the oil drain and checked it? That sounds like the balancer gears rubbing the cases. It is hard to tell on video ,but if it is the balancer gears there will probably be pieces of rubber,hard and brittle in your oil screen or maybe even metal shavings.

It doesn't sound right at all, How long has it been doing this? have you replaced the stator? If so it may be the rotor rubbing on something.

I hear what sounds like a pretty bad exhaust leak as well. The HLA's could be collapsed as well.




If you see it on my bike I did it
VROC#30324
92 vn750(sold)
Current ride 05 1500 Classic FI
lovin' the new scoot



Quote:
"When all is said and done,usually more is said than done" UNK
Click on one x and drag to the other to read between them.

Psalm 40:1...
XI waited patiently for the Lord; and he turned unto me, and heard my cry. X
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post #4 of 20 (permalink) Old 08-02-2013, 07:45 PM
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The more I listen to it I swear it has a scraping sound to it. All the above suggestions are valid imo. That is far from healthy.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #5 of 20 (permalink) Old 08-02-2013, 08:19 PM
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definately not friendly sounding... been doing that for a couple years?

I have heard exhaust leaks on cars that sounded VERY similar. crack in the manifold, or leaking gasket.

may also be a leaky head gasket (not as likely, but it could be letting combustion gasses out under high pressure)
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post #6 of 20 (permalink) Old 08-02-2013, 09:06 PM Thread Starter
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I think the exhaust noise has gotten better now. That video is form 3 years ago. The tapping/clacking sound is what is still the same today. I should take a new video but my newly acquired dog (just today) probably won't let me, he's having a fit with the change in environment.

I've done regular oil changes about every 6 months... I've not seen any metal shavings or rubber bits in the oil. I didn't check on the very first oil change I did though, 'cause I hadn't read about that yet, but I always check the screen now and I haven't seen anything. I'm actually gonna do another oil change very soon, probably tomorrow. I'll check the screen thoroughly again.

I've never replaced the stator or had the engine open at all.

Can't be the spring in the petcock because I don't have a spring in the petcock. I changed out the stock petcock to the TW200 and it is a manual petcock, no vacuum to operate it.

I have no idea what the HLAs' condition might be. Nor do I know how to check them or fix them or anything about them lol. I'm guessing HLA means hydraulic lash adjusters...? I'm not familiar with how they work or what they do though.

I'm gonna TRY to take another video... not sure if it's gonna work out lol.

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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post #7 of 20 (permalink) Old 08-02-2013, 09:22 PM Thread Starter
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New video:

http://s81.photobucket.com/user/ecle...10-01.mp4.html

TRY not to have a heart attack with how dirty my bike is lol

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled

Last edited by Ceal; 08-02-2013 at 09:25 PM.
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post #8 of 20 (permalink) Old 08-02-2013, 10:41 PM
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couldn't view the video,I have noticed that when I upload something onto "the new photobucket" I have to move it to an album before anyone can view it.Especially if I upload it from my mobile device.

I am thinking about trying another photo sharing site. Move it into an album and post a link to the album and see if I can give it a listen.

You are right about what I was referring to on the HLA's. Have you check the 2 cast exhaust manifolds and their gaskets where they bolt onto the head?

I would like to hear it now and think a little on it.If the HLA's are bad, i.e.leaked off or collapsed it would give a similar noise. you might want to run a bottle of Lucas Oil treatment in place of some of your oil when you change to see if it quietens down some,It looks thick as molasses when you pour it in but I have had very good luck with it.

You have my curiosity up now ,Ceal. I want to know whats up even more now.

There is also a spring up near the top of the heads that keeps each side tight as well,if it is collapsing or is weak you will still hear chain slap even with manual adjusters.it is pictured here http://www.cheapcycleparts.com/oem-p...hain-tensioner

PN 92081 on the fiche.

If you strech them them out a little and your noise goes away,you may want to find some new ones. I figure your bike is subjected to a lot higher ambient temperatures than most,so the springs may be a little weak.I would try that move first because it costs nothing to try it.I'm all about eliminating the simple and cheap stuff first. Keep us posted mi hermano,




If you see it on my bike I did it
VROC#30324
92 vn750(sold)
Current ride 05 1500 Classic FI
lovin' the new scoot



Quote:
"When all is said and done,usually more is said than done" UNK
Click on one x and drag to the other to read between them.

Psalm 40:1...
XI waited patiently for the Lord; and he turned unto me, and heard my cry. X
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post #9 of 20 (permalink) Old 08-02-2013, 10:50 PM Thread Starter
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Try this:

http://s81.photobucket.com/user/ecle...?sort=3&page=1

Or this:

http://s81.photobucket.com/user/ecle...10-01.mp4.html

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
Ceal is offline  
post #10 of 20 (permalink) Old 08-02-2013, 10:56 PM Thread Starter
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Thanks for the tip Denny! I'm gonna try it out and see if something changes. I definitely like those repairs that are free!! lol. I should be getting almost twice my income now on this new semester, so I'll be able to scrape up a few items for the bike.

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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