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MG MGF Technical - Cylinder liner protrusion

MG Rover's service manual does not specify how much the K-engine's cylinder liners should protrude above the cylinder block. Anybody who knows?
Jon F

was said to be 0.15mm to not less than 0.1mm
Dieter

Sorry to contradict Dieter, but I think this is for a new engine. I'm sure that the Landrover service bulitin for the MLS gasket quotes a bit less than this reconising that the liners settle in service. I don't have the bulitin to hand, as I gave it to the mechanic who did my daughters last HGF. Can somebody check?
Paul Hollingworth

Paul, that's correct.

Looked up and found it

****** cut **********
Cylinder liner position

Cylinder liner position is the distance
that the liner protrudes above or is
below the face of the cylinder block.
Liners can be level with or 0.075mm
(0.003in) above the face of the block.
If the liners have dropped below the
block face, the engine must be
replaced.
*********************

Regards
Dieter
Dieter

Next question is how much difference in protrusion among the cylinders that is allowed.
If one liner is level with the block and the remaining three are .075 above, is it still recommended to put the engine back together?
Jon F

I don't think its helpful to have a big difference between adjacent liners
Paul Hollingworth

Lets be quite clear, despite what the manual says, if your liners are lower than 4 thou (0.1mm) you will have HGF.

Dave
Dave Andrews

It it recommendable to put shims under liners that have sunk to obtain correct protrusion?
Jon F

Making such shims is entremely difficult, it is better to lower the surface of the block by linishing.

Dave
Dave Andrews

This thread was discussed between 27/03/2008 and 03/04/2008

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