Thats fecked
I feared as much and will address whatever it takes to move forward. I have a question and without sounding stupid can you explain how it would affect the running / performance please ? the reason i ask the car ran perfectly before the engine was pulled apart to investigate coolant leak. TIA
 
The bores are aluminium not steel lined and are coated once that coating is worn then the rings are chewing up the ali which is soft, basically your piston rings are filling away your engine.

Recently had to do this to a mates engine, s/h bottom end
 
That is ****ed..

Have it lined or a new block..

Problem with having it lined is the lack of materiel in the M62..

This is a Lined block, the same thing happened.

MEEK5gEl.jpg


6 out of 8 were lined, still driving my OCD nuts!! runs good though ;)
 
The bores are aluminium not steel lined and are coated once that coating is worn then the rings are chewing up the ali which is soft, basically your piston rings are filling away your engine.

Recently had to do this to a mates engine, s/h bottom end
That makes perfect sense thanks for the explanation
 
That makes perfect sense thanks for the explanation

Nikasil liners, quite a fragile coating, hates sulfer rich fuel..

With that said it still wears off naturally.

Would be interesting to utilise plasma spray bore, can't imagine it would be cheap though ;)
 
That is ****ed..

Have it lined or a new block..

Problem with having it lined is the lack of materiel in the M62..

This is a Lined block, the same thing happened.

MEEK5gEl.jpg


6 out of 8 were lined, still driving my OCD nuts!! runs good though ;)
Plan B it is then and will use a spare engine i already have, hope that has a serviceable block I took a punt and brought it out of a scrapper that i never heard running
 
Plan B it is then and will use a spare engine i already have, hope that has a serviceable block I took a punt and brought it out of a scrapper that i never heard running

Well dunt much matter what it sounded like as i hope you'll rip it apart and give it a refresh ;)

Check the Bores thoroughly ;)
 
Why were they not built with a well known steel liner instead of tin foil?:rolleyes: it's not progress is ito_O
 
As Saint says they are Alusil and not coated, the whole block is cast from 18% ish silicon aluminium and then bored, honed and etched or felt pad finished to expose the silicon for the rings to run on.
If you have a serviceable block then use that and make yourself a coffee table with the old one . You could have the one bore repaired but I would use an Alusil liner and not steel or iron although you only have 6 mm of wall between the bores
 
Why were they not built with a well known steel liner instead of tin foil?:rolleyes: it's not progress is ito_O

Weight? Reaction between different metals? Different expansion leading to dropped liners? Cost?!

Nikasil was fine with purer fuels and the UK should have been low sulphur since at least 2000. Might be some dodgy stuff on the continent after that. Not sure how Alusil stacks up.

Got a feeling my 2001 Jag might have Nikasil bores, although now I think about it I think they stopped using it around then.
 
As Saint says they are Alusil and not coated, the whole block is cast from 18% ish silicon aluminium and then bored, honed and etched or felt pad finished to expose the silicon for the rings to run on.
If you have a serviceable block then use that and make yourself a coffee table with the old one . You could have the one bore repaired but I would use an Alusil liner and not steel or iron although you only have 6 mm of wall between the bores
Removed heads from donor engine 3 am this morning and all looks good so far :) Good advice with the non return valve in block it was in a desperate state. I suppose it would be wise to have this donor block tested ? Thanks again. The other half said it is a firm NO to the coffee table idea :D
 
The pistons are ferrocoated as well as they are also aluminium which prevents galling between the similar metals and the piston rings are a specific type to run in aluminium which means it can get complicated if you start introducing iron or steel. Having said that I have read about iron liners being successfully introduced but for how long I don’t know.
 
That is ****ed..

Have it lined or a new block..

Problem with having it lined is the lack of materiel in the M62..

This is a Lined block, the same thing happened.

MEEK5gEl.jpg


6 out of 8 were lined, still driving my OCD nuts!! runs good though ;)


as a question, why line 6 of 8 instead of all 8 ?
 
Weight? Reaction between different metals? Different expansion leading to dropped liners? Cost?!

Nikasil was fine with purer fuels and the UK should have been low sulphur since at least 2000. Might be some dodgy stuff on the continent after that. Not sure how Alusil stacks up.

Got a feeling my 2001 Jag might have Nikasil bores, although now I think about it I think they stopped using it around then.

the 4.2 had "normal bores aswell as later 4.0s ;)
 

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