Thread: V8 slipped liners

its essentially hammering or peening a locating notch over from the deck material. Doable but not a real smart idea, remachining the block to take top hat liners is a much smarter idea.

Thanks Dave!
Was just hoping there might be a way out that didn't involve a $5k rebuild, as I assume even a "good" second hand motor might end up with the same issue...
Bum!
Cheers
Mike

I have had my motor top hatted, as I had not come across this "pinning" method.

Shame the top hat process wasn't done at the factory from day 1.

Does anyone know if other manufacturers also top hat their liners or are all engines which have iron sleeves lined in the same way as the Rover V8, and it's just bad luck when a liner slips?

Originally Posted by tempestv8

I have had my motor top hatted, as I had not come across this "pinning" method.

Shame the top hat process wasn't done at the factory from day 1.

Does anyone know if other manufacturers also top hat their liners or are all engines which have iron sleeves lined in the same way as the Rover V8, and it's just bad luck when a liner slips?

Mine was also top-hatted.

Re liner install in new engines, I was watch "How it's Made" on TV a couple of days ago and it showed an alloy V6 being made. The liners were inserted in the sand mould and the alloy cast around it. Those liners would, I assume, never move.

How common is this slipped liners problem in later D2's.?

My brother is thinking of getting an 03 or 04 D2 & looking for a petrol.

Primarily is the result of a over heated engine.

Garry

The liners slipping in the rover V8 only started happening when the left the 88.6mm bore and went to 94mm and is a result of the aluminium in the block being thinner but is caused by heat that doesn't show up on your temp gauge ( specific to 1 cylinder ). I would advise any one planning on using a 3.9, 4 or 4.6 to do this if it hasn't already been done if you want the reliability. the 3.5, 4.2 and 4.4 as far as I know had the 88.6 or 3.5inch bore which didn't suffer the same fate.

Originally Posted by scarry

How common is this slipped liners problem in later D2's.?

My brother is thinking of getting an 03 or 04 D2 & looking for a petrol.

Hi Paul
As a Td5 owner for some years and not really paying attention, I'm now finding out - as Freestyler's said - that the V8's have a propensity for this!

The labour intensive nature of top-hatting/stepped liners makes it a relatively expensive exercise. The one I bought had the heads done - which I took to be a good thing - but I assume they'd had a look and gone. "Oops! We'll just pop this back together and keep our finger's crossed..."

So I'd at least recommend a TK test before your brother buys. I've been told if the reading goes into the yellow quickly, it's the head/s as you'd expect, but a slow change can indicate a slipped liner.

In my questioning, I also discovered that head gaskets these days are 'monotorque' - so no re-torqueing - I had hoped maybe that was the issue.
Cheers
Mike