Guinness
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| posted on 23/5/09 at 12:41 PM |
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Funny noise from engine :(
Just spent the morning underneath the ZZR1100 engine. Since I fitted this engine, it's had an oil leak. Finally tracked it down to a leaking
balancer shaft seal.
Replaced that, and then struggled to get it started again. Now it has started it sounds like I'm killing a cat in there. Quite high pitched
squeal from the front of the engine, that changes with the revs.
Now this could be a sign of something serious, or it could be that this is the sound of the balancer shaft seal bedding in (or failing again and that
there is another underlying problem).
I've taken the seal out again, re-greased it, and carefully reassembled it all. It still squeals like a stuck pig.
If I had a fan belt, I'd tighten it, but there are no belts in my engine. It's all chains!
Engine has just done a hard 800 miles round Scotland, but when I put it away on Sunday night it was all OK.
Help?
Mike
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dinosaurjuice
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| posted on 23/5/09 at 01:10 PM |
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is there a chance you didnt quite remove all of the previous seal and theres a bit left in a funny position making a noise?
just a thought
Will
[Edited on 23/5/09 by dinosaurjuice]
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Guinness
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| posted on 23/5/09 at 01:39 PM |
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The old seal was sort of leaning against the retaining arm and just fell out into my hand when I removed it.  No levering required. It came out
complete though, and is an identical match to the new one that went in. All the numbers matched etc
I took the thrust washer out, cleaned the inner surfaces, cleaned the thrust washer, greased everything and stuck it back together with a new seal.
Even used a "suitable drift" to make sure it went in square and seated properly.
Mike
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yorkshire-engines
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| posted on 23/5/09 at 03:44 PM |
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hi its a while since i did one of these so here goes
did you remove the balancer shaft at all if so this is the problem it runs on a eccentric cam and needs to be adjusted to stop the noise there
should be a slot in the shaft that you turn till the noise goes away
cheers malc
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Guinness
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| posted on 23/5/09 at 03:51 PM |
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quote:
Originally posted by yorkshire-engines
hi its a while since i did one of these so here goes
did you remove the balancer shaft at all if so this is the problem it runs on a eccentric cam and needs to be adjusted to stop the noise there
should be a slot in the shaft that you turn till the noise goes away
cheers malc
Hi Malc
I have two engines, one that is in bits and one that is in the car. The one that is in bits still has the balancer shaft installed, and if I undo the
bolt I can turn the slot and hence the cam through 360 degrees.
However the engine in the car, the balancer shaft cam is siezed solid. I can't shift the cam at all.
Arse!
Mike
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motorcycle_mayhem
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| posted on 26/5/09 at 09:35 PM |
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I have more of a rythmic metallic noise...
http://img12.imageshack.us/my.php?image=p5070058.jpg
..though I think mine is easier to locate.
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Guinness
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| posted on 26/5/09 at 10:18 PM |
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quote:
Originally posted by motorcycle_mayhem
I have more of a rythmic metallic noise...
http://img12.imageshack.us/my.php?image=p5070058.jpg
..though I think mine is easier to locate.
Bit of JB weld and that'll be right!
Any idea of the cause of the failure?? It's pretty dramatic.
Mike
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motorcycle_mayhem
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| posted on 27/5/09 at 09:12 AM |
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Very unsure of the cause, obvious suggestion would be oil starvation, but circumstances and data suggest otherwise. Act of God, and not a very cheap
one. The rod you see is a Carrillo.
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Guinness
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| posted on 12/6/09 at 04:43 PM |
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Woooooo hoooooo!!  
Fixed the bloody squeek. Was a right pain in the arse, but it was exactly as Malc suggested. Turn the ecentric cam and the noise stops.
Trouble was the cam was stuck solid. Had to warm the engine up (complete with squeel) then drain the hot oil out, strip the oil cooler pipework off,
take the locking lever off the cam, persuade the cam to move (small then larger mole grips). Then put it all back together while it was still hot.
Start the engine and then turn the (no relieved) balancer shaft until it stopped squeeking.
Sorted and sooooo happy.
Looks like the trip to the BTCC at Croft on Sunday will be in the BEC!
Mike
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Coose
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| posted on 12/6/09 at 06:50 PM |
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Good work feller!
Spin 'er off Well...
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