Landcruiser 80s 1Fz-Fe Burnt Valve ?

First thing to do is a Cylinder compression test, cylinders with burnt valves will be lower, Daryl

Compression test yes.....
Engine up to normal operating temp (N.O.T.) Remove plugs, keep in order inspection of the plugs can tell a lot to the trained eye.
Do a dry test first with wide open throttle (W.O.T.)crank engine over the same number of times for each cylinder say 6 or 7 times. Record readings. Then do a wet test this involves putting three squirts of clean engine oil into each cylinder just before you connect the compression guage to that cylinder.
Record & compare results from wet & dry tests.
If there is a marked increase in compression with the wet test this would more than likely indicate worn rings on that cylinder.
Low compression with both wet & dry test would more than limkely indicate a burnt vale & this will be odds on to be an exhaust valve as they run a lot hotter than the inlet valve.
Low compression on adjoining cylinders usually indicate a blowen head gasket.
Ideally you want the results to be no more than10% variation from the highest to the lowest reading.
Hope this helps

CU down the road
Tony H

$3000 for a landcruiser head job sounds way to dear if it is a head make sure get get a few quotes
cheers

So I did a compression test yesterday and it came up with some obvious results:

1: 180psi
2: 180psi
3: 180psi
4: 30psi
5: 180psi
6: 180psi

So definitely a burn out valve or seat. Does anyone have any recommendations on if I should go with head replacement or do a recond'd long or short motor? Any places I should talk to first in Adelaide area?


Cheers

Fil

OK

Just if anyone else goes through this I thought I would give a costing.

Dropped car off to a S.A. Cylinder Heads. He took the head off, replaced all exhaust seats with lpg seats and all valves with lpg valves. Cleaned the head up, re-shimmed the tappets and put it all back together with new seals.
He also took the sump off, cleaned it all out, changed oil filter, oil and coolant, replaced 3 coolant hoses and the HT leads.
Gave the car a once over and let me know what else needs to be done.
All work was completed in one week and cost me $2595.

Very happy and will be returning there for other work.

Cheers!

Fil