Member Since: 14 Apr 2018
Location: Dorset
Posts: 12
I had a d3 with snap oil pump. And a snapped chain on the drivers bank I replaced 10 lifters that had broken. On rebuilding the heads found the drivers camshaft had twisted. Replaced camshafts started and drove lovely for 50 miles then the bottom end let go.
That's the last time I try to save a engine. Replacement engine from now on
24th May 2018 8:59 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4613
Yep, these engines are not known for outstanding bottom end strength, but no shortage of cranks failing even at low miles. Seems the smallest issue at the top end (eg over-fuelling . timing slip) can cause catastrophic bottom end failure.
24th May 2018 9:39 pm
symonm
Member Since: 13 Feb 2018
Location: Lincs
Posts: 7
Hi All,
Well thanks for the feedback..
I will try to elaborate slightly more. Tensioner gave way at low revs, luckily or maybe not? Definite some valve piston collision, left head off and appears to be no damage to any valves, cams, chain or tensioner. Piston tops appear ok and all move up and down to same heights.
Have not had other head off but piston tops and heights appear ok.
What confuses me is compression is pretty consistent all round but low? Compression test done via injector holes.
24th May 2018 10:50 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4613
Be thorough and examine everything carefully. I'd suggest you must have damage! You will just have to find it. Sorry if that sounds defeatist but I would not want you to find trouble after the job is done.
24th May 2018 10:59 pm
symonm
Member Since: 13 Feb 2018
Location: Lincs
Posts: 7
Hi,
Forgot to mention also most of cam bearings had been pushed up, the outer ones not so far as few bolts not snapped. Bolts stretched and snapped flush with head. All remnants easily removed and replaced. No caps were actually broken.
Thanks again everyone. Simon.
24th May 2018 11:01 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4613
Hi Simon, for me thats enough to remove engine and either repair or replace. I know others will disagree but it's only my opinion, and based on previous experience. Yes it's a massive job but you will know the integrity and sleep better !
24th May 2018 11:16 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10355
PROFSR G
1) Where would you go to have the engine re conned?
95% of the re-con placed for these engine have a bad reputation.
2) An exchange engine from landrover is about £5K I think + labour to remove (body off). It is a bargain considering the warranty you get.
But I guess the car is worth £8K ?
What would you do if it was your money ?
25th May 2018 11:38 am
symonm
Member Since: 13 Feb 2018
Location: Lincs
Posts: 7
Hi,
In my opinion, trying to fix this myself, considering a complete exchange engine at this point is not the way forward yet. I feel I would need to be more certain the lower end is at fault which I do not have.
I feel the best bet is to replace the left cylinder head, cams, valves, etc with another working one, rebuild to the point where I can check compression again. If its the same then fair enough i may have some evidence of lower end problems!
What do you all think? Simon.
25th May 2018 12:49 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4613
Pete K wrote:
PROFSR G
1) Where would you go to have the engine re conned?
95% of the re-con placed for these engine have a bad reputation.
2) An exchange engine from landrover is about £5K I think + labour to remove (body off). It is a bargain considering the warranty you get.
But I guess the car is worth £8K ?
What would you do if it was your money ?
Hi Pete,
I take your point re poor recon work, not living in the UK I'm not in a position to suggest a reputable repairer. In my case I would do it myself, as I do for all my automotive needs, but I accept that's not for everyone. That said, there must be someone within the pages of this forum who can recommend a quality approved engine rebuild specialist. However, if Simon went the way of a top end rebuild and takes his chances, the financial loss of the work done would not be great if it all goes tits up.
There is most certainly something to be said for that, however my point was simply a technical opinion and not an evaluation of the financial implications. That's something only the individual can weigh up.
25th May 2018 1:59 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4613
symonm wrote:
Hi,
In my opinion, trying to fix this myself, considering a complete exchange engine at this point is not the way forward yet. I feel I would need to be more certain the lower end is at fault which I do not have.
I feel the best bet is to replace the left cylinder head, cams, valves, etc with another working one, rebuild to the point where I can check compression again. If its the same then fair enough i may have some evidence of lower end problems!
What do you all think? Simon.
I take your point Simon, and I suppose the costs of going that route would be acceptable if the repair didn't work out. You would just have to bite the bullet at that point. On the other hand, if the bottom end is undamaged you're "on the pigs back"!
25th May 2018 2:06 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10355
just to add, I have replaced a piston on these while the engine is in the car.
It is do-able but a bit of a faf (as the car kinda has 2 level's of sump)
I paid £71 for a new one
25th May 2018 4:25 pm
symonm
Member Since: 13 Feb 2018
Location: Lincs
Posts: 7
Hi,
I am going to replace the two cylinder heads complete with cams, valves, etc from a working engine, and supposedly they have never been skimmed. Can anyone suggest which size head gasket would be best suited in this situation?
Thanks.
30th May 2018 1:47 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10355
the same size HG that came off. (count the fingers at the front of the old HG to identify)
I think its more to do with piston height tolerances than anything to do with the heads
30th May 2018 5:17 pm
XDAndy
Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597
symonm wrote:
Hi,
Can anyone suggest which size head gasket would be best suited in this situation?
Thanks.
As always, my usual disclaimer is that I have no personal knowledge of any of this, have never done it, and no clue how.
I just scour the inter web a lot for as much info as I can find ....
Found this, but no idea if it helps or not
Andy
PS : should point out it is awkwardly paginated. The Section starting 'Cylinder head gasket' starts in the right hand column above the box, then continues in the left hand column below the box.
30th May 2018 8:43 pm
symonm
Member Since: 13 Feb 2018
Location: Lincs
Posts: 7
3.co.uk/gallery/albums/userpics/54875/normal_20180817_171124.jpg[/img]
Hi
Does anyone know where this plugs in on my disco 3 2007. After replacing left head found it hanging! Model is an SE. Comes out of loom next to left EGR valve plug.
Thank you
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