defender 200tdi siezed up engine

[Grant.]

Ok my problem is i have a siezed engine, what is the best way to unsize the engine. it looks like it may have run out of oil and this may of caused the problem.

any tips be great thanks trig

[errol209]

Err... take it to bits? You may well need a very very VERY big hammer, as the pistons have probably jammed in the bores, or you have friction welded the con rods to the crank, depending on how long it ran without oil

[TD5 power]

hi

With a lack of oil its most likely the crank will have siezed into the bearings and possibly spun them round (very bad block becomes scrap.) I would drop the sump and ladder frame off, remove all main and big end bearing caps or just bolts if the caps wont move. Try and remove the crank you may need a big hammer and a bit of wood, carefully inspect the crank and block for damage.

if it is ok then try to remove the pistons one or more will be stuck depending how well siezed they are i would start with the biggest bit of wood that will fit and try to beat the pistons up the bore. if no luck stand the block on some wood and try the same going down the bore when they move clean the bore with emory cloth then turn the block on its side and knock them out the top, im not sure if land rover pistons fit out the bottom of the block.

The camshaft and rocker shaft will have also suffered and need to be removed and checked for damage.

HTH

matt

[Les Henson]

Well I have some experience of a boiled and fried engine - seeing as how I bought a 300TDi in the same condition (it was only £50, mind)

If you put a socket on the crak, does it move at all, or is it rock solid?

If you have a small movement of the crank, then the pistons will be locked in the bores (there may be crank journal damage though still) Drop the sump and the ladder frame, unbolt the big ends and see if you can shove them up the bores. If you can then rotate the crank a small amount, then pistons have picked-up and jammed. Whatever has happened, engine strip I'm afraid, but not the end of the world, by any means. I rebuilt mine - using genuine parts, new Turners head, timing gear, etc, etc. The basic lump cost me about £500 to get back to as new as possible, but then I have a perfect engine (or as close as I can get to one). You need to dismantle the whole engine really, then see what needs doing. You can end-up with an 'as new' engine for not a lot of money.

A solid crank means the mains have siezed, but perhaps a regrind/new shells/re-bore/new pistons/etc, will sort it. You really need to take it all apart........................

Les.