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Old 2nd September 2013, 07:16   #1
janniroux
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Question Cylinder Sleeves and Timing Belts Rover 75

Greetings to all,
Rover 75 v6 Model 2006.
The TWO HEADS have been removed and The Engineering Shop is busy with valves and cylinder-head skimming.
Without the heads we turned the main pulley to clean the cylinder-heads. In the process some of the Cylinder sleeves came out of the block. Not far about 1 inch and we will then push them back-in again.
Question’s ;
Are there any pre-causes I must take before fitting the heads ?
Because the Sleeves came out ; is there is change that water from the radiator could get into the sump via the cylinder sleeves?
Sleeves inside feels good, should I hone them will they still in the block ? The vehicle did 86 000 Kms / about 54 000 miles.
Timing belts look good, do they need replacement at 54 000 miles ?
Gentlemen I really DO appreciate your input.
Kind Regards
Pastor Janni
South Africa.
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Old 2nd September 2013, 08:15   #2
andy willi
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if the liners have moved you will need to reseal them don't rebuild without resealing as they will leak water into the oil


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Old 2nd September 2013, 08:23   #3
lovema75
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Yes the timing belts require replacement, they may only hve done 54000 miles but if they are original then they require replacement on a time basis alone. Plus it would be madness not to do them while the engine is apart.

Dont forget the waterpump and tensioners as well!
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Old 2nd September 2013, 08:58   #4
chris75
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I would not hone the bores unless you are fitting new piston rings . At that mileage , I wouldn't think you are
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Old 2nd September 2013, 09:05   #5
janniroux
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Thankyou,
How do we reseal the sleeves ?
Regards
Pastor Janni.
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Old 2nd September 2013, 13:20   #6
lovema75
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I'm not expert enough to answer that, but I can suggest the italion approach: much arm waving and shouting at your mechanic "for goodness sake don't turn the engine while the heads are off!"

I am sure you can find suitable biblical examples to highlight what awaits him if he disturbs any more liners. Try the lions den...

Last edited by lovema75; 2nd September 2013 at 13:26..
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Old 2nd September 2013, 13:51   #7
kaiser
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Let's hope the boss is with you!
You need to take this engine out and do a complete strip.
The sleeves need to come out and get sealed. Then you must look at the bearings and oil pump and the rings, well everything, and see if anything here needs replacing.

A new set of gasket/seals for the whole engine is a good idea.

The belts must be renewed and so must the water pump, the idlers and the tensioner bearing.

It would be a good idea to also do the thermostat.

One question is why on earth did you take the heads off. These engines normally do not blow headgaskets.

Many of the spares are identical to what is used for the Freelander KV6.

But check before you order! Some things are not!

The water loss that you might have seen is most likely owing to a cracked thermostat and perhaps to broken seals near the liners in the first place.

I have had that and it was completely cured by using Wondarweld.

Anyway, I fear your garage does not know the Rover engine, and maybe you should just look carefully before leaping.
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Old 2nd September 2013, 14:12   #8
lovema75
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It does indeed seem to be a case of the blind leading the blind! (Sorry, cant help myself...)

Certainly it does not sound as if the garage knows what they are doing here. Even if the engine is not familiar to them, it should be evident never to disturb the liners unless they are to be removed anyway, and sometimes mechanics will use the cylinder head holes to bolt wood/metal bars across the top of the block to stop the liners moving.

None of this is of any comfort now of course, the damage is done. Sorry its turning into a major undertaking.
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