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D3 - Engine Bay Everything under the bonnet

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  #1  
Old 11th March 2012, 10:13 AM
AusA8 AusA8 is offline
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Default Engine Movement

Once I fitted the intake manifold links a few weeks back, I filmed the start up and engine revs etc to see how they worked.

(See here for a full explanation on the variable intake system and what happened to my linkages -> http://forum.a8parts.co.uk/showthrea...6047#post36047)

After watching it a few times, I realised that the engine does not 'torque' or twist on start up or revving, no matter how hard she revs. That is, it doesn't move at all!

So, a dumb but simple question, what does your car do on start up and revving? Does it kick, twist, move at all?

For reference - 2003 4.2 V8 petrol.

I know that our cars have special torque and engine mounts and I'm learning about them ATM.
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Last edited by AusA8; 11th March 2012 at 10:35 AM.
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Old 11th March 2012, 11:25 AM
PsYcHe PsYcHe is offline
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My 2003 4.2 doesn't really move.. Maybe the whole car if you rev it hard then let off quickly when stationary, but not an awful lot. Certainly less than a lot of cars I've seen.
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Old 11th March 2012, 12:31 PM
AusA8 AusA8 is offline
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Thanks for the reply.

Does it move at all though? Are we talking mm or cm's of movement?

Mine barely moves a mm. (I set up a benchmark to measure it that was independant of the car.)
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Old 11th March 2012, 02:21 PM
PsYcHe PsYcHe is offline
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I'd put the movement of the car body at mm... Enough to notice something move, but not enough to think there's a problem. Engine movement is negligible.
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Old 12th March 2012, 05:43 AM
AusA8 AusA8 is offline
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Ah, phew, thanks. I thought my mounts might have been shot!
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