Does this sounds like a loose liner or stuck lifter/ bad rockers or valves?
#11
01-21-2018, 10:22 AM
Pro Wrench
#14
01-22-2018, 07:25 AM
Recovery Vehicle
#15
01-22-2018, 07:26 AM
Recovery Vehicle
#16
01-22-2018, 07:28 AM
Recovery Vehicle
Everyone that cries slipped liner really, really, really need to read this page: JE Robison Service - Bosch Car Service Specialists ? the blog: The last word on Land Rover liner failures - I hope!
#17
01-22-2018, 07:49 AM
Everyone that cries slipped liner really, really, really need to read this page: JE Robison Service - Bosch Car Service Specialists ? the blog: The last word on Land Rover liner failures - I hope!
How about the engines that rap at idle? I’ve had several late model Discos at the shop with noise complaints. In two cases, dealers told the drivers they had noise from liners moving up and down, and they suggested the motor was about to fail as a result. One dealer actually got the motor hot and heard it rap, at which time he sprayed the side of the block with a hose and the rap went away. He told the customer that was evidence of liner movement.
Actually, it wasn’t. These photos make it pretty clear that late model liners have nowhere to move. The hose test simply showed that the noise went away when the engine block was cooled – in other words, the noise was triggered by thermal expansion.
Steve and I sorted that noise question out on another engine a few months back. On that motor – which had exactly the same hot rap – we found the piston skirts had collapsed in about ten thousandths of an inch. That was enough to make them rock when they got hot, and they rapped good and loud.
Actually, it wasn’t. These photos make it pretty clear that late model liners have nowhere to move. The hose test simply showed that the noise went away when the engine block was cooled – in other words, the noise was triggered by thermal expansion.
Steve and I sorted that noise question out on another engine a few months back. On that motor – which had exactly the same hot rap – we found the piston skirts had collapsed in about ten thousandths of an inch. That was enough to make them rock when they got hot, and they rapped good and loud.
......
#18
01-22-2018, 08:16 AM
Everyone that cries slipped liner really, really, really need to read this page: JE Robison Service - Bosch Car Service Specialists ? the blog: The last word on Land Rover liner failures - I hope!
I'm also confused to as why he is discussing the flanged liners if the liners are not the issue. if you have a cracked block the coolant will find its way up through any liner style.
#19
01-22-2018, 08:31 AM
I got the heads off of mine yesterday, and just need to hook up the cherry picker to remove top 4 trans bolts, and I can pull the block.
All 8 cylinders look good. No steam cleaning anywhere, all looks good with minamal wear.
Land Rover brand head gaskets were on it(not sure if stock or had ever been done) and I had no heating issues, no Co2 in coolant, oil in coolant, or coolant in oil.
Engine ran great, other than loud tapping as it warmed up.
I replaced lifters, pushrods, rocker shafts, timing chain, and all looked good. Replaced oil pump, which was cracked in 3 places...and it still ticked!
So, I took it back apart, which is where I'm at now.
I've yet to check cam, crank or rod bearings, but can't belive they would make the tap or ticking sound, I would expect a noticeably different sound, a knock.
The top of the block looks good, and there is no ring/impression in the bottom of the head gasket, at any cyclinder, that would indicate the sleeve/liner is hitting the bottom of the head gasket.
I have read good info and arguments stating that liners do or don't slip. So far, these liners appear to be ok.
I still think I'm going to pin all 8. I'm about to have the engine out, so it would be one potential problem eliminated.
I will measure the piston skirts(as well as everything else), since the skirts were specifically mentioned in the above article. But again, I would expect a different sound from pistons, more of a knock or hollow sound, not a gremlin with a ball peen hammer.
Hopefully I can find a definative answer once I have everything apart and measured.
I'll post what I find.
I have to find something.
All 8 cylinders look good. No steam cleaning anywhere, all looks good with minamal wear.
Land Rover brand head gaskets were on it(not sure if stock or had ever been done) and I had no heating issues, no Co2 in coolant, oil in coolant, or coolant in oil.
Engine ran great, other than loud tapping as it warmed up.
I replaced lifters, pushrods, rocker shafts, timing chain, and all looked good. Replaced oil pump, which was cracked in 3 places...and it still ticked!
So, I took it back apart, which is where I'm at now.
I've yet to check cam, crank or rod bearings, but can't belive they would make the tap or ticking sound, I would expect a noticeably different sound, a knock.
The top of the block looks good, and there is no ring/impression in the bottom of the head gasket, at any cyclinder, that would indicate the sleeve/liner is hitting the bottom of the head gasket.
I have read good info and arguments stating that liners do or don't slip. So far, these liners appear to be ok.
I still think I'm going to pin all 8. I'm about to have the engine out, so it would be one potential problem eliminated.
I will measure the piston skirts(as well as everything else), since the skirts were specifically mentioned in the above article. But again, I would expect a different sound from pistons, more of a knock or hollow sound, not a gremlin with a ball peen hammer.
Hopefully I can find a definative answer once I have everything apart and measured.
I'll post what I find.
I have to find something.
#20
01-23-2018, 11:59 AM
Recovery Vehicle
If you read the whole blog article at that link, you will see they have cut blocks in half and show you why the sleeves on LATE model 03, and 04’s don’t get slipping liners. Cliff notes: 03 and 04’s have a step at he bottom of the cylinder, preventing liners from fallingAlso note that in the article he shows how cylinder wall failure is more common.