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thunderer
PostPosted: 06 Jun 2018 20:58 
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Current ride: X1W m2
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4 bent valves 4 bent push rods. Stripped gear case and found broke key between oil pump drive gear and pinion any ideas what coursed this and do I need to look further in engine.

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Nutah
PostPosted: 06 Jun 2018 21:10 
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:shock:
with all that damage , i would strip it right down & check the whole motor

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DaveH
PostPosted: 06 Jun 2018 21:31 
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:yt:
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thunderer
PostPosted: 06 Jun 2018 23:22 
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That's my line of thought also safe than sorry in the long run

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Nutah
PostPosted: 07 Jun 2018 09:05 
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definitely.
good luck

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DaveH
PostPosted: 08 Jun 2018 20:29 
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Out of interest is it the original oil pump drive gear or a lucky hands type. Has it stripped the teeth off the cam gears or pinion gear. Is the oil pump still free to turn. ?
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thunderer
PostPosted: 09 Jun 2018 10:42 
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Current ride: X1W m2
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Changed original drive gear at 42,000 very worn fitted replacement harley then as hadn't got LH gear. Have now so will rebuild with it. No teeth stripped and oil pump turns freely.

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jeznewsome
PostPosted: 09 Jun 2018 10:50 
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so what caused the key to break?
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kevmean
PostPosted: 09 Jun 2018 10:59 
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Dropped a valve first? or rear big end gone causing piston to hit valve and the shock loading sheared the key ? Was the pinion nut still tight?

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kevmean
PostPosted: 09 Jun 2018 11:01 
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Also which bike and had it had any engine work done recently?

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thunderer
PostPosted: 09 Jun 2018 11:34 
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Pinion nut still tight never touched top end oil pump drive gear changed over thousand miles ago. It is a x1 2001 engine I will show you a pic when I see you next Kev.

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kevmean
PostPosted: 10 Jun 2018 10:35 
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thunderer wrote:
Pinion nut still tight never touched top end oil pump drive gear changed over thousand miles ago. It is a x1 2001 engine I will show you a pic when I see you next Kev.

When you say never touched top end did you remove the rockers when you changed the oil pump gear? If you did but didn't give lifters enough time to bleed down on rebuilding it may have caught a valve when you turned it over bending it very slightly and causing it to foul fully later.
If you didn't you could still have caused damage when refitting the cam cover.

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