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Timing belt snapped


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#1 lsabin73

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Posted 12 April 2009 - 06:41 AM

Hi,
my timing belt snapped on me, was doing 70mph on M5, no noise what so ever just died. Would this have bent the valves or not. New timing belt being fitted, cams and crankshaft all set up correctly, but engine won't fire up. Would a compression test confirm this, whats the easiest and cheapest solution to sort it out.

Cheers Lee

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#2 homeless

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Posted 12 April 2009 - 09:18 AM

i would say yes its bent the valves..like you say do a compression check to make sure..they want to be over 100psi at least on each cylinder.

#3 Whelk8891

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Posted 12 April 2009 - 07:49 PM

i would say yes its bent the valves..like you say do a compression check to make sure..they want to be over 100psi at least on each cylinder.

I had a timing belt let go on my Rover ten years or so ago. No damage other than needing a new timing belt.

Its unlikely to get away with no serious damage, but not impossible.

#4 mintalkin

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Posted 12 April 2009 - 08:09 PM

at 70mph i would say you have damaged some valves due to the sheer enurchur of the engine speed.

#5 dezwez

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Posted 14 April 2009 - 07:44 AM

at 70mph i would say you have damaged some valves due to the sheer enurchur of the engine speed.

i would say so as engine won't fire up
sound like head off :(

#6 SierraYankee99

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Posted 14 April 2009 - 06:29 PM

at 70mph i would say you have damaged some valves due to the sheer enurchur {INERTIA} of the engine speed.



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#7 Russ

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Posted 30 April 2009 - 03:54 PM

Some engines u get away with timing belts snapping because they're made with clearance so if the belt snaps the valves don't come down on the top of the pistons,.... Not too sure about fords though but I think you'll have some bent valves at the very least.

#8 sam1986uk

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Posted 03 June 2009 - 08:59 PM

I would have to say IMO judging by what you have said unfortunately, yes the valves have.
Sorry to hear.

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