Engine rebuild/replace?

lynall · Dec 3, 2023

1988smithy said:
I remember the German fella measuring the block of that 3.0 sdv6 they did to check for true

Iirc he had issues, I genuinely reckon once a wrongun always a wrongun where these engines are concerned, if you get a good one then you are doing well, he say fingers crossed with 162k and counting!

Bloke down the club his mate had 2016 3.0 blow, LR changed engine few months later that blew, now legal arguments.

Garage in Kent who specialises/d in them have had rebuilt ones fail, and now charge 5k before they will even strip your car for a look see, and I am sure there is a damned good reason for that.

One bloke on the d3forum summed it up for me when he said, I had to sell it as it was like driving around on a hand grenade with the pin pulled!
I did smile a few years ago when they closed rank when I said they (the 3.0) were crap and the apple never falls far from the tree, but then they would as they had 10s of thousands sitting on their driveways, many went to the volvos, cannot say I blame them either.

lynall · Dec 3, 2023

Ian M in France said:
It would be interesting to see how many that have been repaired fail again, the other thing is if they fail again was it down to the block or something that had been damaged the first time and not picked up on, I find it hard to believe if the new crank goes in and all turns as it should and all clocks up as it should that the block would cause a problem, but who really knows, could the block be near the limit of spec when new and that plays a part in the problems in the first place

Apparently the block twists and is never right after a failure.

Ian M in France · Dec 3, 2023

lynall said:
Apparently the block twists and is never right after a failure.

What would it take to fit the 2.7L engine? you can get a S type Jag for 2k with good engine and with the oil pump sorted seem to be a better option, but bet getting everything to talk to each other and work would be a pig

1988smithy · Dec 3, 2023

lynall said:
Iirc he had issues, I genuinely reckon once a wrongun always a wrongun where these engines are concerned, if you get a good one then you are doing well, he say fingers crossed with 162k and counting!

Bloke down the club his mate had 2016 3.0 blow, LR changed engine few months later that blew, now legal arguments.

Garage in Kent who specialises/d in them have had rebuilt ones fail, and now charge 5k before they will even strip your car for a look see, and I am sure there is a damned good reason for that.

One bloke on the d3forum summed it up for me when he said, I had to sell it as it was like driving around on a hand grenade with the pin pulled!
I did smile a few years ago when they closed rank when I said they (the 3.0) were crap and the apple never falls far from the tree, but then they would as they had 10s of thousands sitting on their driveways, many went to the volvos, cannot say I blame them either.

I think you're right there, I went with tdv8 when a D3 would've been a much better car for us as a family purely because of the engine.....then the 3.6 **** its head gasket

lynall · Dec 3, 2023

Ian M in France said:
What would it take to fit the 2.7L engine? you can get a S type Jag for 2k with good engine and with the oil pump sorted seem to be a better option, but bet getting everything to talk to each other and work would be a pig

I have no idea, but have read that someone fitted a 3.0 engine into a 2.7 disco, so the reverse should be possible.
I assume they just used the bare engine and fitted everything 2.7 onto the 3.0.

tyregeezer · Dec 4, 2023

Its true many broken cranks do destroy the block First step is to check for visible impact of any moving parts on the block as same as the German fella mine had none nothing actually touched the block, spinning of the main bearings is the killer, I then took it to ivor Searle machine shop who confirmed for me the mains are inline and fine just had the bores honed on rebuilding the proof will be when you fit the crank and turning torque even a couple of thou will lock it solid the German chappie has already done quite a few miles so far, not been out in the workshop too much but will be rebuilding after Christmas may switch this motor with mine which had now done 208k and is also ripe for rebuild

steve2286w · Dec 4, 2023

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these fellas nearby did a good rebore job on my 2286

tyregeezer · Dec 5, 2023

Yes lots of great machine shops around you can always use them to do the measurements and not as expensive as you might think

steve2286w · Dec 5, 2023

Yes I used a local general tool fitting co. To double check my bore dims , they were both very similar and worth the £20 for peace of mind

Nodge68 · Dec 9, 2023

Housewarmers said:
So the guy I bought from is stripping it back and found a bearing having spun and chewed crankshaft. Drakes engineering who supplied & re ground the crankshaft think it is caused by a bent conrod….. waiting to hear more.

An engineering company should be able to measure a rod to a high accuracy in a few minutes. I can measure a rod for straightness to 0.0125 mm (½ thou in old money) in my home workshop.

Housewarmers · Dec 30, 2023

Nodge68 said:
An engineering company should be able to measure a rod to a high accuracy in a few minutes. I can measure a rod for straightness to 0.0125 mm (½ thou in old money) in my home workshop.

I’ve got the car back now - just.
the guy I bought it from has been superb with me charging just for parts to rebuild.
the conrod supplier accepts that it was indeed faulty (1.5mm too long !!!) however, because the workshop
is not a registered LR repairer there’s no warranty !

anyway it is rebuilt and running perfectly - for now - done a couple o‘hundred miles today over to Keswick and back.
running great, smooth and I’m certain more (the engine) quietly than previously

hope it lasts a bit longer this time!!

steve2286w · Dec 30, 2023

good ending , was conrod for a different engine cant see how it would have been that far out otherwise

Housewarmers · Dec 30, 2023

Stanleysteamer said:
Shame!

Mechanical skills I have. Vehicle lift I have not. Motivation I have not!
motorbikes and small sports cars are my limit now !

steve2286w said:
good ending , was conrod for a different engine cant see how it would have been that far out otherwise

. It is massively over size! But can explain the serious stress / pressure on crank bearings as the piston
just about touches head. Mechanic has pictures of head over piston two was gleaming compared to the others.
the head was checked and deemed to be perfect. It was the bearings on number two that were totally chewed / destroyed

steve2286w · Dec 30, 2023

Envious of all your toys

Graculus · Dec 30, 2023

Ian M in France said:
... could the block be near the limit of spec when new and that plays a part in the problems in the first place

The engine is, as most will know, a joint Ford / PSA design built under licence by Ford (originally at DDC) during the design stage, LR as part of Ford's PAG asked for a longer block to give the crank more 'land' between journals and therefore more strength, along with wider main bearings. This was refused by PSA as a longer engine would not fit the C5/6 407/607 transverse architecture. All is well (mostly) with the correct oil grade & specification and 'enough' usage, nearly 20 years of real-world tests have shown that 'treat 'em mean, keeps 'em keen' also applies to Lion engines.

Andy Warren · Dec 30, 2023

Housewarmers said:
Mechanical skills I have. Vehicle lift I have not. Motivation I have not!
motorbikes and small sports cars are my limit now !

. It is massively over size! But can explain the serious stress / pressure on crank bearings as the piston
just about touches head. Mechanic has pictures of head over piston two was gleaming compared to the others.
the head was checked and deemed to be perfect. It was the bearings on number two that were totally chewed / destroyed

Blimey a CB125T-B if I'm not mistaken, haven't seen one of those in a while

.

steve2286w · Dec 30, 2023

I had lessons in one of them at my local school nearly ran over my teacher

MJI · Dec 31, 2023

Andy Warren said:
Blimey a CB125T-B if I'm not mistaken, haven't seen one of those in a while.

Had a race against one once, i won as well.

Was rather pleased i had a 100cc bike.

MJI · Dec 31, 2023

Graculus said:
The engine is, as most will know, a joint Ford / PSA design built under licence by Ford (originally at DDC) during the design stage, LR as part of Ford's PAG asked for a longer block to give the crank more 'land' between journals and therefore more strength, along with wider main bearings. This was refused by PSA as a longer engine would not fit the C5/6 407/607 transverse architecture. All is well (mostly) with the correct oil grade & specification and 'enough' usage, nearly 20 years of real-world tests have shown that 'treat 'em mean, keeps 'em keen' also applies to Lion engines.

Design flaw then. Again pity the project storm 6 never got made.

Turboman · Dec 31, 2023

MJI said:
Had a race against one once, i won as well.

Was rather pleased i had a 100cc bike.

Never had a CB125, but I reckon my Suzuki GT125 Stinger twin would have eaten it up, in a straight line, at least!

Engine rebuild/replace?

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