Well, it's taken a while but alas, the new engine is now in. Only done 30 miles since it was finished yesterday but all good so far.
After 6 months of the most annoying tap,tap,tap when warm i now have a nice quiet V8.
In the end I had practically a new full engine.
It started with me getting a good deal on a top hat HRC2411 block with new 4.6 crank, rods & 4.0L pistons (this is to give a higher compression - ideal for running LPG).
Together with this i also bought:
new cam (Kent)
lifters
pushrods
cross bolts & seals
timing chain, gears,chainwheel
oil pump gear set - might aswell while it's off.
new seals, gaskets etc.
I was hoping to use my existing heads but it wasn't to be. The liner on no.5 had been busy chewing through the fire ring into the head - too deep to skim.
So, a new pair from Emmotts was the quickest (& cheapest) solution.
Just thought i'd post up some info & piccies of the damage:
A fair lip on cylinder 5, also looks like it was starting to blow into the headbolt. No evidence of coolant leaking - piston is caked in carbon.
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Head had taken a battering from the liner beating the fire ring against it a few million times- too deep to skim off.
This engine was a Genuine LR replacement - new casting LCF000250. I read from JE Robinsons that these blocks actually had a step at the bottom of the liner to supposedly cure the issue of liners slipping - ummmmm. Thought i'd take a look at mine while it's sat in the shed.
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There's definately a step on the bottom of the liner, so in theory the liner should be trapped between the step & the headgasket? I can only presume the liners were not seated properly in production before the blocks were decked, allowing the liner to move.
So, just need to decide what to do with my old block etc. Coffee Table?
In the meantime will just keep an eye on fluid levels in the new engine. Will just run unleaded for a few hundred miles before trying LPG. I was concerned with running standard unleaded with a higher compression but seems fine so far.
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Sorry, couldn't resist ditching the old rocker covers that had some manky green hammerite finish on them.
