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Is The Mx5 Engine A Interference Engine If Timing Belt Breaks??

22K views 10 replies 9 participants last post by  Mr Slow  
#1 ·
i read somewhere that the mx5 engine will not be damaged if the timing belt breaks!!! is this true?
 
#3 ·
You should be fine. It's non-interference.

Had mine snap in the summer and I ended up fitting a new one myself, easy peasy. Worth doing the water pump and tensioners while you're at it too
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#7 ·
seen em bend but never stretch lol
 
#9 ·
it is but i think you can still cause damage if the revs are over something like 5000 when it snaps
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Non interference is non interference
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i remember reading it somewhere , not the pistons smashing into the valves but i imagine the high revs causing the belt to snake and smash the waterpump etc,
 
#11 ·
it is but i think you can still cause damage if the revs are over something like 5000 when it snaps
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[/quote]

Non interference is non interference
[/quote]

i remember reading it somewhere , not the pistons smashing into the valves but i imagine the high revs causing the belt to snake and smash the waterpump etc,
[/quote]

Well it's still wrong. My belt snapped at about 5k, I towed it home and fitted a new belt, drove to work the next day.

The belt snaps/or strips it's ribs and then just hangs there, it's only the crank pulley (which is tiny) which makes it move.