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Rocker arm strength? 

 

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 Post subject: Re: Rocker arm strength?
Posted: Sun Apr 19, 2009 7:05 pm 
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Posts: 264

Joined: 30th May 2006

Gallery: 16 images

Power: 165 rwkw

Location: Penrith
NSW, Australia

Just some pics, I hope this link works

Image

Image

Image

Last edited by HP hungry on Mon Apr 20, 2009 1:49 pm, edited 1 time in total.

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 Post subject: Re: Rocker arm strength?
Posted: Sun Apr 19, 2009 7:36 pm 
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Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

there must be a cam timing issue for that to happen..
the piston hitting the valve is what broke the rocker arm..
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 Post subject: Re: Rocker arm strength?
Posted: Sun Apr 19, 2009 8:59 pm 
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Age: 33

Posts: 206

Joined: 26th May 2008

Ride: EF XR6

Location: Brisbane
QLD, Australia

looks very likely to be a timing issue. I would guess 1 tooth out on the timing cain. You are lucky you only broke one!

 

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EF XR6 Manual 271RWHP/199RWKW N/A using Stock manifold with dual plane runners still operating. EFI Hardware 6TBM to come mid year.

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 Post subject: Re: Rocker arm strength?
Posted: Mon Apr 20, 2009 2:13 pm 
Smokin em up
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Posts: 264

Joined: 30th May 2006

Gallery: 16 images

Power: 165 rwkw

Location: Penrith
NSW, Australia

the timing is right, it was one tooth out on vernier gear before but was corrected when I did serpentine belt conversion. on some discussions with my local engine shop I found out what the cause would have been, home made shims :oops:(idiot) that I used at one stage to try to overcome noisy lifters (not used when rocker arm broke).
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