Thread: 3.5 litre cylinder

yes and no...

not likely in a brand new motor...

given that they havent made one for ages.

yes, over heating it can loosen the liners as can prolonged full load operation

Just a thought ...
Another part to look at is a worn rocker

Mike

If a liner is going to move, the time when the noise will be most noticable is when the engine is cold and first started. Once up to temperature, the block expansion will hold the liner still and the noise will no longer be evident.

I would lean towards worn lifters / rocker assembly as being the most likely cause.

Ron.

sounds like pinging to me.
get your timing checked.
once the sleeve slips, it stays where it ends up, it doesn't bounce up and down even when cold.

Ron,
Cam, Lifters, and rockers & shafts were all brand new 20,000k ago. I have had the rocker covers off and checked all including bolt torques).

I have got the motor bloody hot twice over the last 12 months through water pump corrosion.

Definitely not pinging, and much louder and more serious rattle than pinging.

I have bought another block off E-Bay and plan to transfer all parts into that.

Will be pulling off the suspect side head first though,

Many Thanks
Jeff

Originally Posted by MoodyBlue

Ron,
Cam, Lifters, and rockers & shafts were all brand new 20,000k ago. I have had the rocker covers off and checked all including bolt torques).


Definitely not pinging, and much louder and more serious rattle than pinging.

On the Suspect head side ..... ... Start motor .... USING a hose for listening to your ear ... Identify the position of the rattle




Take the rocker cover off.....

I'm still going for a dud rocker .... Have a real GOOD look at the depth of the (push rod) ball sitting in the hollow of the rocker // (Compare it to the others)

Mike

Hello Jeff,

Were the parts that you used, cam, lifters, rockers and shafts genuine Land Rover items or Britpart pattern parts?

I have heard of the latter failing in a very short space of time, with the distance that you have covered since fitment being more than adequate.

Ron.

Originally Posted by RoverP6B

If a liner is going to move, the time when the noise will be most noticable is when the engine is cold and first started. Once up to temperature, the block expansion will hold the liner still and the noise will no longer be evident.

The other way around. Aluminium expands at a great rate than steel thus expands away from the liner.

A hole in a block increases in diameter when hot, not the other way around.