A

Andy_J

Active Member
Hi

My 4.6 V8 has sfter 78,000 miles done what every V8 does eventually. It overheated. th cooling system was bone dry by the time I got the car parked up (some nice drivers who would not leave a gap for me to get off the road).

The cause was a burst hose (i think) which has now been fixed, I have refilled the engine and run it and it is blowing water out the header tank.

I have done a compression check as I assumed head gasket, but the results don't seem right.

All the cylinders except number 2 (front driver side) show 150PSI but cylinder number 2 is showing 200psi.

Anyone got any thoughts/advice before I pull the cylinder head off that side.

Have I blow 7 cylinders and 1 is ok?

Cheers Andy
 
cylinder 2 seems high,i think you will have to pull the heads off to have a look,be prepared for the worst it may be the famous cracked block job if it is only the head gasket take it as a big bonus.i take it youve checked the rad/water pump/fan/stat are ok
 
clarkie said:
cylinder 2 seems high,i think you will have to pull the heads off to have a look,be prepared for the worst it may be the famous cracked block job if it is only the head gasket take it as a big bonus.i take it youve checked the rad/water pump/fan/stat are ok
Click to expand...

Thanks, I am already working out how much a new block will cost.

Really after any suggestions on whay cyliner 2 would be so high. I expected some low comprssions indicating where the gasket had blown
 
jamesmartin said:
oil on rings, water in bore
Click to expand...

Strange there would only be oil on the rings on one cylinder. I will do a wet test on each cylinder tomorrow, see if the other come up to 200 psi

Then pull the drivers side head

not sure I want to think about water in the bore, that just sounds expensive.

Plugs were all dry when they came out

Could i have damaged a valve?
 
I would expect 150-160 psi +/- 10% per cylinder. Valve seating problems give lower readings. I suspect the high reading is due to a "Wet" cylinder. Try another set of readings but shoot a squirt of oil or Redex into each plug hole prior to taking the readings
 
Would just remove head and have a look. Compression much to high, 200 psi is F1 stuff. Mind you if he could get them all like that he would have one hell of an engine.:D:D:D
 
wammers said:
Would just remove head and have a look. Compression much to high, 200 psi is F1 stuff. Mind you if he could get them all like that he would have one hell of an engine.:D:D:D
Click to expand...

:bolt::hysterically_laughi:hysterically_laughi:hysterically_laughi
 
Not got the cylinder heads off yet, but nearly ther should have the right bank off tonight.

Head Gasket has definitly gone on the outside of the block at cylinder 2 as once I got the alternator mount off I could see lots brown sludge down the side of the engine starting at the cylinder head.

Does anyone know how long Turner engineering have been fitting the ductile iron liners to their engines as looking through my service history I have a receipt for a turner engine that was fitted 70K miles ago.
 
Andy_J said:
Not got the cylinder heads off yet, but nearly ther should have the right bank off tonight.

Head Gasket has definitly gone on the outside of the block at cylinder 2 as once I got the alternator mount off I could see lots brown sludge down the side of the engine starting at the cylinder head.

Does anyone know how long Turner engineering have been fitting the ductile iron liners to their engines as looking through my service history I have a receipt for a turner engine that was fitted 70K miles ago.
Click to expand...

So it had a new engine at 8000 miles? Wouldn't that have been a warranty job rather than an aftermarket replacement?

No idea how long for Turner - give em a bell and ask them!

Guy
 
kooky_guy said:
So it had a new engine at 8000 miles? Wouldn't that have been a warranty job rather than an aftermarket replacement?

No idea how long for Turner - give em a bell and ask them!

Guy
Click to expand...

By the compression on cylinder two it should have been a bill from Mclaren.:):):)
 
Andy_J said:
Does anyone know how long Turner engineering have been fitting the ductile iron liners to their engines as looking through my service history I have a receipt for a turner engine that was fitted 70K miles ago.
Click to expand...

I Think I may have caused some confustion here the new engine was fitted 78K miles ago, Typo in my post.

The rangie has done about 128K miles.

I took the head off the right bank last night, I couldn't see any visible damge to the gasket, is this normal? or does it now look more like a knackerd block. When I have had blown gaskets in other cars there is visble damge to the gasket.
 
you should be looking for staining /black,around fire ring ,fire ring should have clear ring where gasket was sealing
 
Ok guys it seems like all I see on here are head gaskets going on low mileage motors. Are the land rover motors that big of a piece of junk, or are you guys not doing good service on them? 200,000 miles on gas and 300,000+ miles on a diesel are the normal here?

And the air suspension. You don't have the snow and ice like we do and all the salt and sand they put on the road for traction control, for 5 months of the year? Whats up
 
engines last longer on long journeys rather than cold short ones , ive stripped test motors with equivalent of 200000 miles like new inside and old womens motors with 40k on clock and worn out + no one seems to understand about checking cooling system effiency ,as long as expansion tank looks like its got something in it will be allright+ lr should have done a little more than bore 3.5 out 200 thou
 
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