Oil Pump.....Do they need to bed in??

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I've replaced main and big-end shells (in situ) in tired Rover V8s before and managed to get another 40K miles out of the engine before the point where the crank needs a regrind - older Rover V8s had bugger-all oil pressure to begin with so worn shells were usually the first job when the oil light started flickering at idle. They're cheap and easy to do - what have you got to lose? Worn shells are usually caused by swarf from excessive rocker arm/shaft or camlobe wear.
 
Saint - I don't know if this will help but I was in a similar position to you a few months ago.

Horrible noises, tapping etc.

Bought all the bits I thought needed doing - shells, camshaft, tappets, timing gear, oil pump gears.

When the workshop stripped the engine they found plenty of wear in no. 7 bore and other general wear.

It could have been fettled locally but with unsure outcome, so I opted for a Turner short engine. (top hats you know).

I was nervous at the expense and hadn't properly factored in the labour and additional parts like head bolts, head overhaul, valve seals gaskets etc.

I now wish I'd paid the extra for the full engine.

Good luck with it.
 
Thanks for the horror story Spiggy!! :D:D:D

Elected to heed the advice you fine chaps have given me, as the Crank journals look to be in OK condition (will do my best to mic them in-situ) and the bearing shells haven't spun or look to be heat damaged, I will haul the Range Rover off the road for a few days, drive the BRIGHT YELLOW FIAT 500 (and I am 6'3" and the wrong side of the BMI chart !! so will get many laughs and jibes from the Engineers at work) and order the required Main bearing shells and Big End Shells and replace those before any further damage may occur.

Oil light flickers at idle if stood for a couple minutes at the lights so pressure is leaking past the Mains and I would rather be laughed at a few times in the Fiat than pull the engine and face a huge bill.

Once the Mains and Biggies are done, in the new year I will no doubt look to the Cam and Rocker Shafts along with followers.

Love Range Rover ownership, it is what makes life less dull :D:D:D:D:D:D
 
Right, had the main bearing and one of the Big End shells out again....no size numbers stamped so can I assume they are standard??....

All they have on them is as per the photos...tried a search on the numbers and feck all turns up that can ID them as a part!

Any clues?

Also the Biggie looks rough in places, but the crank journals are groove and mark free, so looks like they haven't been spun, over heated or damaged the crank.

Also the tip for sliding the top shell out is grand, only thing is the oil way in the crank is not straight and is drilled at an angle so I had to modify the rivet to have a really short stubby tail to fit squarely!
 

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If, as you say that the crank looks ok then I am sure that a bearing supplier can cross reference the shell numbers. I would guess that they are standard as there are no + values stamped on the shells. Good man for not driving it any further.:) glad the rivet tip worked
 
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they are std and big ends worst shell will be the one in the rod not cap
Did push the piston up the bore about an inch but as I had to refit so I could move the vehicle back out the workshop into the yard (I was doing this last night - got in at 2am) before the weekend shift started, I didn't want to pull the rod end shell only to find I couldn't get it back on without a faff as I hadn't taken the plugs out to make life easier!! but yes, due to the loading cycle, the top shell is bound to be much worse!
If, as you say that the crank looks ok then I am sure that a bearing supplier can cross reference the shell numbers. I would guess that they are standard as there are no + values stamped on the shells. Good man for not driving it any further.:) glad the rivet tip worked
Rivet tip was sound!, yep after you chaps gave me some advice on best not to drive it, I do like to heed advice and act on it where possible.....I did get a few comments from the hairy arsed engineers I work with about turning up in a bright yellow Fiat 500 mind you..!!
 
Right, had the main bearing and one of the Big End shells out again....no size numbers stamped so can I assume they are standard??....

All they have on them is as per the photos...tried a search on the numbers and feck all turns up that can ID them as a part!

Any clues?

Also the Biggie looks rough in places, but the crank journals are groove and mark free, so looks like they haven't been spun, over heated or damaged the crank.

Also the tip for sliding the top shell out is grand, only thing is the oil way in the crank is not straight and is drilled at an angle so I had to modify the rivet to have a really short stubby tail to fit squarely!

ERR1773 are std big ends new number STC1426. ERR1765 does not compute but as big ends are std can't see mains being different. New number is STC4299.
 
Rivet tip was sound!, yep after you chaps gave me some advice on best not to drive it, I do like to heed advice and act on it where possible.....I did get a few comments from the hairy arsed engineers I work with about turning up in a bright yellow Fiat 500 mind you..!!

Sod the engineers, they are not picking up the bill for a complete engine rebuild if you keep on driving it.:D:D
 
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why are you replacing con rod or main cap bolts?

Change con rod bolts for sure, but main bearing bolts should be fine as they are torqued and not angle tightened. :);)

Con rod bolts a stretch (angle tightened) so need changing, main cap bolts are torqued and don't need changing. But if it suits him to change them that is up to him.

Just thought it would be good practise to do so!!
 
Certainly on stretch bolts for sure. But the main caps for their size are not that tight so receive a lot less stress. But it's up to you. Maybe that's why you can't find a supplier because they are not called for that often.


Range Rover 2 V8 Cylinder Block Components at www.rimmerbros.co.uk

Not that tight??????

I am a fairly hefty lad, and using a 2 & 1/2 foot breaking bar I nearly popped my shoulder out trying to get the main caps undone...the big ends were fecking tight as well!!
 
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