300TDI bust rocker shaft

TOW · Sep 9, 2010

rocker shaft has snapped into 4 bits
two head pedestals broken
one head pedestal stud hole stripped

i would like to hear of any suggestions why this happend
the only thing i can think is that the stud was overtightend and partly stipped the thread in the alloy head

i intend to "recoil" the thread and fit second hand shaft and pedestal

any tips welcomed :welcome2:

nrgserv · Sep 16, 2010

TOW said:
rocker shaft has snapped into 4 bits
two head pedestals broken
one head pedestal stud hole stripped

i would like to hear of any suggestions why this happend
the only thing i can think is that the stud was overtightend and partly stipped the thread in the alloy head

i intend to "recoil" the thread and fit second hand shaft and pedestal

any tips welcomed :welcome2:

any pics?
summats gone wrong to snap in 4 places.
what rpm where it doing when it went bang?

brnocz · Sep 16, 2010

as it by chance snapped the cam belt

discowayne · Sep 16, 2010

i second that i had one do it and it was when my cambelt snapped at 60 mph

TOW · Jun 27, 2012

i was doing 70 mph (+) when it pulled the rocker pillar stud out of the partly stripped thread in the alloy block . a big bang !!! WTF !!
a re-thread in the head and some second hand bits sorted it out.

cheers

salochinnotlib · Sep 2, 2012

I am afraid that this is a fairly common problem. If I were you, I would Helicoil all of the stud holes during the replacement to avoid a re-occurence. You need an M8 Helicoil kit which are fairly inexpensive

300TDI bust rocker shaft

TOW

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nrgserv

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brnocz

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discowayne

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TOW

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salochinnotlib

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