Cylinder Head

[Radders]

Hi all,

After long term overheating problems with my 2.5 estate, I decided to go all in today and change the head gasket. The head is now removed ready to be cleaned up and inspected closely tomorrow. Is there anything else I should check while I have the head off? (Apart from the obvious)
I also seem to remember someone telling me that the engine has a bad cast at the rear of the block and I need to use some sealant on the gasket or something to stop it leaking oil when I put it back together???? Any ideas???

All help will be greatly appreciated.  :)

[nicmk1est]

overall,has the engine given u any problem before the overheating issue? if theirs a bad cast,,would it benefit from a block skim?

[kenv8pi]

Hi radders  Have a poke around the back of no 6 to see if any of the casting sand is still pact around the bore make no6 run very hot

  Ken

[Radders]

1521 wrote:

Hi radders  Have a poke around the back of no 6 to see if any of the casting sand is still pact around the bore make no6 run very hot

  Ken

Thanks. will do.

[Radders]

1555 wrote:

overall,has the engine given u any problem before the overheating issue? if theirs a bad cast,,would it benefit from a block skim?

Nah, engine looks fine. Piston tops and valves are really good. No marks on the bores at all. Its just always had slight overheating issue, always run sick when cold and kicks out a bit of white smoke sometimes. Tell tale head gasket failure signs.  :(

[Nick Moore]

Just a thought, can the water passage at the back of the head be opened out? I noticed the passage on my GT6's head was much smaller than the corresponding waterway at the back of the block (bottom of picture).