VN1500 engine noise - Page 3

**MAS Tequila** · 12-27-2016, 07:20 AM

Take the head cover off and see if there is any play in the cam followers.

It won't appear to be much and shouldn't show any wear.

You really should consider changing the bronze filters while you're in there.

MT

Lafer · 12-29-2016, 04:00 PM

I think I found my problem and it's connection rod bearing... Here is the video so you can see how it loose

I thought noise was coming from the top head but maybe its just lack of experience using mechanical stethoscope and too much noises in the engine.

Will continue digging down

mick56 · 12-29-2016, 04:10 PM

Jesus.I am amazed that did'nt break apart alltogether.I wonder how come it got so bad,lack of oil to the bearings must be favourite.That or a circlip came off the gudgeon pin.I would want to know that problem was resolved before putting it back together again.

**cnc** · 12-29-2016, 07:11 PM

Big end or wrist pin end? hard to see in the video on my phone. If it is the big end hope the crank is not damaged.

mick56 · 12-29-2016, 07:28 PM

Quote:

Originally Posted by cnc

Big end or wrist pin end? hard to see in the video on my phone. If it is the big end hope the crank is not damaged.

It looks,and sounds, like the piston is slapping around on the gudgeon/wrist pin.The small end bearing on the conrod must have broken up completely to have that much movement.If thats the case,there will be bits of it in the oil,that might have done some other damage. Like i said,i am amazed it did'nt break apart,and wreck the engine.

Lafer · 12-29-2016, 07:31 PM

It's a big end, where rod is connected to the crankshaft. Hopefully I have complete disassembled old second engine so if something damaged could use some parts from the old one :) otherwise I would have already bought a new engine on ebay

Yes, there were some metal things in the oil

mick56 · 12-29-2016, 07:41 PM

Quote:

Originally Posted by Lafer

It's a big end, where rod is connected to the crankshaft. Hopefully I have complete disassembled old second engine so if something damaged could use some parts from the old one :) otherwise I would have already bought a new engine on ebay

Yes, there were some metal things in the oil

Strange that just one big end has gone.I believe they are both fed with oil as they dip into the crank,so get equal treatment.

**cnc** · 12-29-2016, 08:37 PM

Quote:

Originally Posted by mick56

Strange that just one big end has gone.I believe they are both fed with oil as they dip into the crank,so get equal treatment.

Several possible scenarios none of which could ever be pinpointed as the smoking gun. Long over due oil changes and oil run low by a previous owner, defective bearing with too much play that slowly beat it's self to death, a piece of metal from a gear or similar lodged in the bearing and damaged it. Take your pick.

Lafer · 12-29-2016, 09:06 PM

Rear rod also not good but better then the front one.

I wish I knew what previous owner do with the bike, but unfortunately I have absolutely zero information about it.

DragonLady58 · 12-30-2016, 08:46 AM

Yep, I'd go backwith new Rods, Pistons, all new lower end bearings, and check to see if the crank needs grinding....
Also new HLAs while your at it....

redjay · 12-30-2016, 09:19 AM

Can you buy new crank/connecting rod bearings for a Nomad that are oversized ?

**MAS Tequila** · 12-30-2016, 09:32 AM

How is the rotating assembly from the old engine?

If it's good, I'd swap the crank and rods in with +1 pistons, unless the cylinders are exceptionally good.

MT

mick56 · 12-30-2016, 09:42 AM

Quote:

Originally Posted by redjay

Can you buy new crank/connecting rod bearings for a Nomad that are oversized ?

They are shell bearings,so provided the crank has not suffered,fitting new ones should be ok.I reckon i would want to have the crank measured,and balanced though.It could be built up & re-ground if its suspect,but as Lafer has another crank,fitting that with,or without, new shells might be the way to go.

redjay · 12-30-2016, 01:10 PM

Quote:

Originally Posted by mick56

They are shell bearings,so provided the crank has not suffered,fitting new ones should be ok.I reckon i would want to have the crank measured,and balanced though.It could be built up & re-ground if its suspect,but as Lafer has another crank,fitting that with,or without, new shells might be the way to go.

Okay. My reference was to having the crank reground undersized and then having to fit oversized bearings.

mick56 · 12-30-2016, 02:00 PM

Quote:

Originally Posted by redjay

Okay. My reference was to having the crank reground undersized and then having to fit oversized bearings.

12-27-2016, 07:20 AM	#31
MAS Tequila Join Date: Jan 2009 Location: Psychiatric Ward FL Posts: 3,429	Take the head cover off and see if there is any play in the cam followers. It won't appear to be much and shouldn't show any wear. You really should consider changing the bronze filters while you're in there. MT __________________ MT 2016 FLHP Psychiatric Ward FL VBA 936 Login or Register to Remove Ads
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12-29-2016, 04:10 PM	#33
mick56 Sr. Member Join Date: Nov 2013 Location: The Newforest, England Posts: 4,664	Jesus.I am amazed that did'nt break apart alltogether.I wonder how come it got so bad,lack of oil to the bearings must be favourite.That or a circlip came off the gudgeon pin.I would want to know that problem was resolved before putting it back together again. __________________ when this you see, remember me, and bear me in your mind, let all the world say what they may, speak of me as you find.
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12-29-2016, 07:11 PM	#34
cnc Join Date: May 2009 Location: Montreal QC Posts: 12,034	Big end or wrist pin end? hard to see in the video on my phone. If it is the big end hope the crank is not damaged. __________________ Norm Ward 2008 blue / silver nomad kawanow / VBA #01136
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12-29-2016, 07:31 PM	#36
Lafer Jr. Member Join Date: Dec 2016 Location: Mount Holly, North Carolina Posts: 24	It's a big end, where rod is connected to the crankshaft. Hopefully I have complete disassembled old second engine so if something damaged could use some parts from the old one :) otherwise I would have already bought a new engine on ebay Yes, there were some metal things in the oil Last edited by Lafer; 12-29-2016 at 07:37 PM.
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12-29-2016, 09:06 PM	#39
Lafer Jr. Member Join Date: Dec 2016 Location: Mount Holly, North Carolina Posts: 24	Rear rod also not good but better then the front one. I wish I knew what previous owner do with the bike, but unfortunately I have absolutely zero information about it. Last edited by Lafer; 12-29-2016 at 09:09 PM.
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12-29-2016, 04:00 PM	#32
Lafer Jr. Member Join Date: Dec 2016 Location: Mount Holly, North Carolina Posts: 24	I think I found my problem and it's connection rod bearing... Here is the video so you can see how it loose I thought noise was coming from the top head but maybe its just lack of experience using mechanical stethoscope and too much noises in the engine. Will continue digging down
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12-30-2016, 08:46 AM	#40
DragonLady58 Sr. Member Join Date: Jul 2016 Location: Somewhere South of Alaska.... Posts: 2,351	Yep, I'd go backwith new Rods, Pistons, all new lower end bearings, and check to see if the crank needs grinding.... Also new HLAs while your at it.... __________________ --------------------- Don't start no schit, there won't be no schit.... My Sarcasm is directly proportional to the amount of Stupidity involved --------------------- VBA#03239 VROC#37400 VRA --------------------- 2014 Vaquero 2001 Nomad FI 2003 Street Glide (sold) 1500 Meanie, fresh rebuild (sold) 90s BUBF Bobber (sold) 2001 UltraCycle FatPounder (Sold) 1975 HD ElectraGlide (Sold) 1982 Kawasaki Z1 Chopper (Sold) Suck It Up & Ride! Last edited by DragonLady58; 12-30-2016 at 08:50 AM.
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12-30-2016, 09:19 AM	#41
redjay Top Contributor Join Date: Feb 2008 Location: Ontario Posts: 6,952	Can you buy new crank/connecting rod bearings for a Nomad that are oversized ?
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12-30-2016, 09:32 AM	#42
MAS Tequila Join Date: Jan 2009 Location: Psychiatric Ward FL Posts: 3,429	How is the rotating assembly from the old engine? If it's good, I'd swap the crank and rods in with +1 pistons, unless the cylinders are exceptionally good. MT __________________ MT 2016 FLHP Psychiatric Ward FL VBA 936
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