cracked liner?

[RGD129]

hi everyone

ive just entered the world of p38 ownership and it is great, i cant wait to get on the road.its a 2000 model hse, silver paint with black seats
but it has a few problems....the main problem at the moment is that it was using water when i brought p38.ifound that the front of both heads were leaking from the head gaskit, there was some water in the drivers side foot wheel and some running out from the drivers side front guard.

ive taken the heads off to find some poor condition head gaskits and number 4 cyl to be a little cleaner then than the other cylinders.

at this stage i am woundering if cyl 4 has a cracked liner and if there is any way to test liner while still in p38? or am i worrying about nothing?

any help would be great
regards brett

[Scouse]

You can pressure test the block while still in the car but you need to blank off the water galleries on the deck.

Check the tops of the liners & see if you can feel if one is slightly lower than the others.
Ron might be along shortly with some photos :(.

[Scouse]

He must be still in bed but he does need his beauty sleep these days.

Look here:
http://www.aulro.com/afvb/p38a-range-rover/66180-p38-4-6-what-would-you-do.html

[RGD129]

thanks for that, have cheaked and they all feel the same.

ihave just been told by my local mec that the 4.6 runs dry liners so even if the liner is cracked it wont let any water in because the liners dont have water running directly around them.does this sound true?

regards brett

[Scouse]

Most times if the liner's cracked, it's from the head bolts behind it cracking the block which then lets coolant through.

[PhilipA]

ihave just been told by my local mec that the 4.6 runs dry liners so even if the liner is cracked it wont let any water in because the liners dont have water running directly around them.does this sound true?


Well It would be if it was relevant but it isn't.
What happens is that the block behind the liner cracks and water rises between the block and liner and gets into the combustion chamber , because the head gasket does not adequately cover the join.

This may pressurise the cooling system, or if small just result in a clean cylinder and mysterious loss of water.
Any one got the Robison reference ?
OK here it is . he has some cutawaays on here
Land Rover repairs and service (http://www.robisonservice.com/servicedep/rover_dept.asp)
Regards Philip A

[p38arover]

ihave just been told by my local mec that the 4.6 runs dry liners so even if the liner is cracked it wont let any water in because the liners dont have water running directly around them.does this sound true?

He'd better have a look at this video:

Revised Land Rover Engine Block Tester - YouTube (http://www.youtube.com/watch?annotation_id=annotation_234714&v=t-NrrCpHhP8&src_vid=C2EyvgxdyRY&feature=iv)

Perhaps you need a Rover specialist mechanic. All Four x 4 at Kotara http://www.allfourx4.com.au/ are LR specialists as are Modern Motors at Dungog http://www.modernmotors.com.au/.

[101RRS]

I didn't think that liners normally cracked but the block material around them does and they slip.

Garry

[Scouse]

I've seen a few that have leaked through the liner itself, initially thought to be porous but now (in the light of the Robison tests) probably cracks.

[wayneg]

Water in the drivers side footwell will be the heater o rings leaking, Passenger side Aircon drain tubes blocked

[p38arover]

Passenger side Aircon drain tubes blocked

Or disconnected. There are two of these drains, one each side. There is a valve on each drain either side of the transmission tunnel under the car.

The catch trough under the AC evaporator. There is a drain at each end:

http://www.aulro.com/afvb/attachment.php?attachmentid=48440&stc=1&d=1340859043

This one of the drains.

http://www.aulro.com/afvb/attachment.php?attachmentid=48439&stc=1&d=1340858931

Note how it is disconnected.

http://www.aulro.com/afvb/attachment.php?attachmentid=48438&stc=1&d=1340858885

The other end of the drain under the car:

http://www.aulro.com/afvb/attachment.php?attachmentid=48441&stc=1&d=1340859339

[RGD129]

thanks for the links and info.at this stage iwill be ringing all4xfour and mordern motors to see if the have a test kit.failing that iwill make up my own kit.

ithink leak in footwell will be heater o rings as leak is coolant coloured.

any ideas about coolant leak near drivers side front guard?

regards brett

[p38arover]

any ideas about coolant leak near drivers side front guard?

The reservoir overflow exits there. I have an extension hose on mine to avoid dribbling water onto the electricals,