Omega Owners Forum
Chat Area => General Car Chat => Topic started by: The Red Baron on 23 December 2009, 15:28:20
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further to my post in help section about rattling v6.
the cam timing was way out, drivers side(outer) cam 5 teeth out, well i thought i was doomed. however, fitted a new belt kit & tensioners & fired her up. Well it ran :o no missfire, rattled for a bit until the lifters got happy again but all seems ok apart from the egr gasket has blown.think i will be blanking that off now anyway. so im happy again now. :y
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'kin 'ell
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Who's a very lucky lad then ... :)
5 teeth out and nothing bent ?? .. must be a record .. :)
Good to hear the motor is running again :y :y :y
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Jammy sod, I had one a while ago (you supplied the head)that had gone 2 teeth and the valves were bent
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Jammy sod, I had one a while ago (you supplied the head)that had gone 2 teeth and the valves were bent
i turned it off very quickly, was only on tickover at the time in my yard, but yes, still very lucky. ;D
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Jammy sod, I had one a while ago (you supplied the head)that had gone 2 teeth and the valves were bent
i turned it off very quickly, was only on tickover at the time in my yard, but yes, still very lucky. ;D
Always makes me laugh that statement.... It's still spinning at 600 RPM ::) ::) ;D ;D
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Jammy sod, I had one a while ago (you supplied the head)that had gone 2 teeth and the valves were bent
i turned it off very quickly, was only on tickover at the time in my yard, but yes, still very lucky. ;D
Always makes me laugh that statement.... It's still spinning at 600 RPM ::) ::) ;D ;D
600 is nowt though really is it tbh.
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As the cams go at 1/2 engine speed thats 300 rpm for that cam ... thats 5 revs /second, if you ran it for 12 seconds ... long enough to hear the problem, register it, switch off, thats 60 cycles.
I believe you said just one cam out, so that's 6 valves per cam ... so if the valve and piston met each valve gets hit 60 times ..... :( thats 360 "strikes" .......
More than enough impacts to do some serious damage I'd have thought .......
So .. you was very lucky IMHO .... :)
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As the cams go at 1/2 engine speed thats 300 rpm for that cam ... thats 5 revs /second, if you ran it for 12 seconds ... long enough to hear the problem, register it, switch off, thats 60 cycles.
I believe you said just one cam out, so that's 6 valves per cam ... so if the valve and piston met each valve gets hit 60 times ..... :( thats 360 "strikes" .......
More than enough impacts to do some serious damage I'd have thought .......
So .. you was very lucky IMHO .... :)
Exactly... It only takes 1 hit to bend a valve ;) ;)
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As the cams go at 1/2 engine speed thats 300 rpm for that cam ... thats 5 revs /second, if you ran it for 12 seconds ... long enough to hear the problem, register it, switch off, thats 60 cycles.
I believe you said just one cam out, so that's 6 valves per cam ... so if the valve and piston met each valve gets hit 60 times ..... :( thats 360 "strikes" .......
More than enough impacts to do some serious damage I'd have thought .......
So .. you was very lucky IMHO .... :)
not ran it for around 3 weeks, fired up no probs, after a minute or so it all went tits up, swithed off immediatly.
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Jammy sod, I had one a while ago (you supplied the head)that had gone 2 teeth and the valves were bent
i turned it off very quickly, was only on tickover at the time in my yard, but yes, still very lucky. ;D
Always makes me laugh that statement.... It's still spinning at 600 RPM ::) ::) ;D ;D
600 is nowt though really is it tbh.
Still 5 times a second, given camshaft/crankshaft speeds........ ;D
edit as others beat me to it!! ;D ;D ;D 8-)
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As the cams go at 1/2 engine speed thats 300 rpm for that cam ... thats 5 revs /second, if you ran it for 12 seconds ... long enough to hear the problem, register it, switch off, thats 60 cycles.
I believe you said just one cam out, so that's 6 valves per cam ... so if the valve and piston met each valve gets hit 60 times ..... :( thats 360 "strikes" .......
More than enough impacts to do some serious damage I'd have thought .......
So .. you was very lucky IMHO .... :)
not ran it for around 3 weeks, fired up no probs, after a minute or so it all went tits up, swithed off immediatly.
Appreciate that, which is what the 12 seconds was based on .. ok . perhaps it only took you 6 seconds to register the noise and switch off .. thats still 180 hits in total, 60 per cylinder !!!
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very lucky mate glad it still a runner :-) :-)
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you are a lucky man jonboy .does that mean you will be driving round in her now mate? :y
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you are a lucky man jonboy .does that mean you will be driving round in her now mate? :y
all being well, yes pete. use the mv6 a little less now. :y
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It all depends on which direction the timing was out.
Exhaust cam.... so it can be advanced wrt the crank for quite a long way before problems occur but can only be retarded (late) by 2 teeth (ish) before the valves fail to get out of the way of the ascending piston.
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It all depends on which direction the timing was out.
Exhaust cam.... so it can be advanced wrt the crank for quite a long way before problems occur but can only be retarded (late) by 2 teeth (ish) before the valves fail to get out of the way of the ascending piston.
& it was. :P