I am aware that torsion values from the VCDS are in degrees.

 

+ve = camshaft advanced relative to crankshaft

 

-ve = camshaft retarded relative to crankshaft.

 

and that figure should be close to zero although aware that some folk aim for, or at least accept, slight variations in region of 1 degree

 

If you believe any of the above is wrong please say.

 

My question though is this: Does the VCDS torsion value figure represent degrees of rotation of the crankshaft or camshaft? obviously different as 1 degree of crankshaft rotation corresponds to 0.5 degrees of camshaft rotation.

 

 

Thanks

This might be a stupid question but going Back to my old cars that I used to adjust the timing on by twisting the distributor, is a torsion value of 0 equal to TDC or am I being too simplistic here?

This might be a stupid question but going Back to my old cars that I used to adjust the timing on by twisting the distributor, is a torsion value of 0 equal to TDC or am I being too simplistic here?

What you are thinking about there is ignition timing (getting the spark timed right relative to crankshaft position) on a petrol engine.

 

The torsion value is about getting the the camshaft at the correct angle relative to the crankshaft. - Oh how I long for the good old days of pushrods and carburettors!

What you are thinking about there is ignition timing (getting the spark timed right relative to crankshaft position) on a petrol engine.

 

The torsion value is about getting the the camshaft at the correct angle relative to the crankshaft. - Oh how I long for the good old days of pushrods and carburettors!

Haha, thought I might be looking at it too simply.

Posted this in model forum but then realised there was a specific section for VCDS

 

I am aware that torsion values from the VCDS are in degrees.

 

+ve = camshaft advanced relative to crankshaft

 

-ve = camshaft retarded relative to crankshaft.

 

and that figure should be close to zero although aware that some folk aim for, or at least accept, slight variations in region of 1 degree

 

If you believe any of the above is wrong please say.

 

My question though is this: Does the VCDS torsion value figure represent degrees of rotation of the crankshaft or camshaft? obviously different as 1 degree of crankshaft rotation corresponds to 0.5 degrees of camshaft rotation.

 

 

Thanks

 

A further question

 

I see references elsewhere to there being a limit to the range of torsion values which the VCDS can display, if the number gets too big it defaults to zero. Is this true? and if so what is the torsion value measuring range on the VCDS? I ask this because I suspect mine is a long way out and am going to get it checked on a VCDS, Don't want to be fooled by a false zero.

 

Thanks again

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