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Offline Georgeinabz

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #10 on: June 23, 2020, 01:05:56 PM »
Hi
Could have been some of that debris catching the the starter ring gear , is there a sump pickup filter that could have been dislodged and hit against the Conrod cap as the engine rotates? , I would give the valve springs a good blow out if not a strip down since you are in so deep anyway , you dont want any of that crud about , no scores on the crankshaft , balancer or Camshaft?

Offline Rauno_N

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #11 on: June 26, 2020, 07:28:38 AM »
Thank you all for the thougths.
Makes good sense that exhaust suffered under stress after landing in the water, unfortunately couldn't find any cracks there even though the header pipe is already welded once before.
Anyway will have second closer look for sure and double check any signs of crack or leak.

Oil pump was disassembled and rotor checked, looking beautiful. Regarding the oil ways..good point, will discuss with mechanic on his thoughts over this.

Everything besides the valve springs have been disassembled, inspected and assembled again. No debris on starter ring, no scores on crankshaft , balancer or Camshaft.

All this was done in cooperation with a trained mechanic, who has repaired motorcycles and engines more than 30 years as a day job.
Really though case, now i have handed the bike over to another local repair shop.
They were keen to help knowing this case is a tough one, any ideas here are still welcome of course.


Offline Londonglide

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #12 on: June 26, 2020, 08:58:31 AM »
I hope you get it sorted, and I must admire your dedication to finding and fixing.
Keep us all posted.

Offline chuckxc

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #13 on: June 26, 2020, 10:53:17 AM »
Yes, very commendable and thorough effort in your search for the elusive noise. Well done.
Interesting that you found that debris in the sump. Made me think, when the bike was tipped over to that extreme it leaves open the possibility that a piece of that debris fell into the wrong place and is interfering with a moving part.  If you use a mechanics stethoscope you might be able to pinpoint the source of the noise for a clue.
Laterally unstable unless moving.

My third Triple - 1976 Laverda 3CL Jota
My 4cyl grunt - 2005 Honda CB1300F

Offline SOHUTAA

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #14 on: June 29, 2020, 09:04:20 PM »
I await the continuation of your misadventures!

Hoping for a favorable end. . .

Offline Rauno_N

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #15 on: July 04, 2020, 09:11:00 AM »
An update.
Exhaust has been checked for cracks and damages once again and nothing found. Also started the bike without exhaust and mechanical sound is still the same.
Repair shop removed the side covers and double checked alternator/starter/clutch and everything involved in there once again.
Also removed the cam cover, cams, chain etc to check, since this was assembled by me, not a trained mechanic. Inspected all the parts, including visual inspection to the valve springs. Everything was in order and no"findings". To double check the chain tension, they somehow modified my old tensioner to a mechanic one. Not sure how this was exactly done, haven't seen it yet.

Bad news is due to the release of Corona restrictions and starting motocross season they are really occupied with motocross bikes for next couple of months and not willing to proceed with engine removal and another complete disassembly before September/October

This has made me think of getting another engine to be able to ride at all this season. 2 months already spent on finding the problem, starting to get hopeless now.
Ebays has a lot offers from a different price range. Does anybody have reccomendations for a trustworthy offer or bikes breakdown shop to rely on ?


Offline AvgBear

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #16 on: July 04, 2020, 05:28:36 PM »
Thanks for the update -- too bad there's no resolution yet.
Sounds like you have the time to continue?, may I suggest removing the spark plugs and spinning the engine with a large electric drill (w/suitable adapters to the crankshaft).
Seems to me that the definite mechanical knocking may be more noticeable without the engine running and easier to pin-point.
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
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Offline Rauno_N

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #17 on: February 16, 2021, 08:41:49 AM »
Hi all,

Little update. Since the fault was not found, i chose the way of buying another second hand engine and finally got to ride a couple of months end of last season.
Exhaust remained old one so all the possible crack doubts in exhaust were eliminated.

I have still not given up and took the engine completely apart again. It was no surprise that main bearings, big end bearings, pistons, connecting rods, crankshaft is fine. Also completely disassembled the cylinder head this time, valves, springs, valve split cotters all fine.

Yesterday came to mind a question relating to balancer shaft drive gear. Why is it designed with 2 separate gear wheels that are side to side each other ?
I can imagine purpose is to keep the balancer drive gear and crankshaft gear wheel tightly together ? Wondering if there could be a broken spring between the 2 balancer gear wheels.

P.S double click on the picture enlarges it


Offline Bwana

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #18 on: February 16, 2021, 01:12:20 PM »
I'm OBVIOUSLY no expert but it seems you've covered alot. from your pics your intake valves don't look concentric with the cutout of the head cylinder to cylinder.... and I'm not sure how you'd verify "runout" but I'm envisioning a good lathe and a runout indicator to check.  It seems these engines are spec'd pretty tight and a bent valve seems like the only thing you haven't checked. Are the guides replaceable or are they bored thru the Al and could have caused your Al shavings in the sump?  Trying to learn alongside you!

Offline characticus

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Re: Ugly ticking sound from engine, 2013 Tiger 800 XC
« Reply #19 on: February 16, 2021, 04:46:12 PM »
*Originally Posted by Rauno_N [+]


Yesterday came to mind a question relating to balancer shaft drive gear. Why is it designed with 2 separate gear wheels that are side to side each other ?
I can imagine purpose is to keep the balancer drive gear and crankshaft gear wheel tightly together ? Wondering if there could be a broken spring between the 2 balancer gear wheels.




You are correct with regard to the purpose, it is described as "spring-loaded backlash eliminator". I haven't stripped this engine, but according to the manual the backlash eliminator gear will spring out of alignment with the main gear as the shaft is lifted out. Worth checking it - you seem to have covered all of the more likely causes!

 


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