poohbear Posted October 15, 2008 Share Posted October 15, 2008 Hi guys, I'm planning to replace head gasket, piston rings and big end shells this weekend and was wondering if there are any pitfalls I should be looking out for, or if anybody has any helpfull hints? It's a 2.5TD with loads of crankcase pressure which is blowing oil and water into the air filter. White fumes blow from any exposed breathers and the dip stick tube. Any handy hints would be greatly received (yes I know I should be transplanting a Tdi but the budget wont stretch that far!) I have done an engine swap before and other normal service bits, and was wondering how much time to allow to complete these works, bearing in mind I've not split a head before. Many thanks, D. Quote Link to comment Share on other sites More sharing options...
LR4x4 Management Posted October 15, 2008 Share Posted October 15, 2008 You are likely to find that one or more pistons are cracked - this is a very common problem on this engine. At least piston kits are only about £40 each. Les. Quote Link to comment Share on other sites More sharing options...
TJ101 Posted October 15, 2008 Share Posted October 15, 2008 You are likely to find that one or more pistons are cracked - this is a very common problem on this engine. At least piston kits are only about £40 each.Les. Maybe wrong Login Les ??? Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted October 15, 2008 Share Posted October 15, 2008 oops ! This is the voice of the Mysterons ..... MO Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 15, 2008 Share Posted October 15, 2008 Bugger - sorry about that Les. Quote Link to comment Share on other sites More sharing options...
denviks Posted October 15, 2008 Share Posted October 15, 2008 if you are looking for an 2.5td engine i have one sat waiting to go. its just come out of my 110 and is sat in southampton waiting to go up for sale. the only reason its out is we are doing a tdi conversion. it was a great runner give me a shout of you are interested Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 15, 2008 Share Posted October 15, 2008 I would recommend a replacement of a good engine, rather than a fix - it'll probably be cheaper than possibly replacing pistons/head gasket/ labour time. You can swap a TD engine in a day. Of course - it depends how much Denviks wants for the engine Les. Quote Link to comment Share on other sites More sharing options...
JonR Posted October 15, 2008 Share Posted October 15, 2008 Maybe wrong Login Les ??? Nah, he's just showing off again.... Jon. Quote Link to comment Share on other sites More sharing options...
denviks Posted October 15, 2008 Share Posted October 15, 2008 im not looking for a huge amount. its just had a new cambelt fitted 3000 miles ago, along with an oil change and new glow plugs. i have video of it running too ,,,,,,2 days ago i know you are a fair way up country but it might be worth the trip?? Quote Link to comment Share on other sites More sharing options...
pat_pending Posted October 15, 2008 Share Posted October 15, 2008 I agree with Les. Swap for a better engine. The chances are the bores will be worn or scored requiring a rebore. Even if they're OK you'll need to deglaze the bores to allow the new rings to bed in, or you'll be back to square one before long. Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted October 16, 2008 Share Posted October 16, 2008 i founf the big end nuts a pain. Ended up using rounded star shape sockets. Use a cheapo honing tool run it slow and use plenty of thin oil. Put a rag down the bore to stop the swarf hitting the crank Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 16, 2008 Author Share Posted October 16, 2008 Thanks for the response guys - Denviks - thanks for the offer, though if I'm going to swap the engine again I might aswell go for a Tdi and do it properly. I already have a spare engine sat my garage! - that one has a bottom end knock too, could do the shells on that one I suppose and put it back in. I also have the gasket kit, rings and shells sitting under my desk so looks like I'm commited to an oily weekend! or do Paddocks accept returns? Back to hunting flea bay if they do. Many thanks, D. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted October 16, 2008 Share Posted October 16, 2008 Use a cheapo honing tool run it slow and use plenty of thin oil. Those cheapo honing tools with three stones are a load of rubbish - they make everything oval. Beg, borrow, or steal one of the ones with the lots of round balls on the end of wires. Use an electronic drill and run it as slow as you can, with lots of oil as above. A mix of diesel and engine oil is pretty good. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 17, 2008 Author Share Posted October 17, 2008 Thinks Jim - on the case already. D. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 17, 2008 Author Share Posted October 17, 2008 Got a bit carried away and whilst I was tidying the garage I ended up starting to strip the beast - well the spanners were out so it seemed a shame not to use them Having removed the injectors three of them are covered in oil and one is totally clean (apart from right on the end which is clean on all four of them with a sooty deposit around the injector whole). Is this an indication of what I will find when I pull the head tomorrow? - I'd have expected to find them all the same. Also any body know the bore diameter of the top of their heads by any chance - it would save me hunting through the book of lies D. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 18, 2008 Share Posted October 18, 2008 90.4700 mm Les. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 18, 2008 Author Share Posted October 18, 2008 Many thanks Les. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 18, 2008 Author Share Posted October 18, 2008 Well full marks to Les - with the head off I can clearly see 4 cracked pistons! Guess I know how I'll be spending my evenings this week. D. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 18, 2008 Share Posted October 18, 2008 All 4 - I've only seen 1 or 2. Any chance of a picture please? Les. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 18, 2008 Author Share Posted October 18, 2008 here you go...... No.1 No.2 3 & 4 to follow. Quote Link to comment Share on other sites More sharing options...
poohbear Posted October 18, 2008 Author Share Posted October 18, 2008 and the second installment... No.3 No.4 Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 18, 2008 Share Posted October 18, 2008 Oops! looks pretty bad The pistons are AE, which I think are not original items, so they may have been replaced previously. Standard size still and the top of the bore doesn't appear to be badly lipped. If that's the case, then just new piston kits, head gasket, and some RTV sealant and it's all back together and running. Make sure your cooling system is in good order - this problem is usually caused by over heating. Les. Quote Link to comment Share on other sites More sharing options...
nas90 Posted October 18, 2008 Share Posted October 18, 2008 Excuse me butting-in, but can someone explain the diesel engines that have been used in Land Rovers? This thread is a 2.5TD, presumably turbo diesel, the same capacity as 200 & 300 TDi but not as good as 200 TDi? Now if the thread was V8............................ Quote Link to comment Share on other sites More sharing options...
western Posted October 18, 2008 Share Posted October 18, 2008 Excuse me butting-in, but can someone explain the diesel engines that have been used in Land Rovers?This thread is a 2.5TD, presumably turbo diesel, the same capacity as 200 & 300 TDi but not as good as 200 TDi? Now if the thread was V8............................ Yes, all 2.5 diesels are 2495cc, the earlier diesel engines are 2.25 sometimes refered to as a 2.3 & before those the 2.0litre diesel, most of these can trace their liniage back to the 2.0litre diesel engine, the tdi block is very similar to the 2.5n/a & 2.5TD blocks. Quote Link to comment Share on other sites More sharing options...
nas90 Posted October 18, 2008 Share Posted October 18, 2008 Yes, all 2.5 diesels are 2495cc, the earlier diesel engines are 2.25 sometimes refered to as a 2.3 & before those the 2.0litre diesel, most of these can trace their liniage back to the 2.0litre diesel engine, the tdi block is very similar to the 2.5n/a & 2.5TD blocks. So whats the big difference between a 2.5TD and 200 TDi and why leave out the 'i' on the 2.5TD? Presumably the 200 TDi was the first Diesel to be used on RR or Disco 1 apart from the diesel used in RR late 80's which I have forgotten the engine name and wasn't a LR unit anyway? Quote Link to comment Share on other sites More sharing options...
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