12 replies to this topic

[fpsasm]

HELP! I am loosing coolent.. between the cylinder head and the block. I have upgraded the gasket, and i have cleaned the mating surfaces, yet water still leaks. The compression in my cylinders is: 9.0; 9.1; 8.9; 9.0. (Its a 850). I have checked that there is no water leakage from any coolent pipes. The tappets are at the correct gap-age ( ;/ )... The valve seats are Kay!... watelse... everythin is K k K k k k !

Thanks for ur feed-back...

[tomsbluemini]

Are you sure it's coming from the head?? It may well be the water pump or bypass hose...

Have a look in the morning when it's light and make sure you're absolutely certain where the water's coming from. It's likely to be either the water pump or bypass hose...

Cheers

Tom

[fpsasm]

Are you sure it's coming from the head?? It may well be the water pump or bypass hose...

Have a look in the morning when it's light and make sure you're absolutely certain where the water's coming from. It's likely to be either the water pump or bypass hose...

Cheers

Tom

I put a new bypass hose, which doesnt leak, and theres a new gasket on the thermo, and there are no leaks from either..

...the leak is defo coming from were the head meets the block, you can see small bubbles forming and going...


I think that the cylinder head is warped...

Edited by fpsasm, 13 April 2009 - 09:21 AM.

[Massey]

if it is warped just send it off to get scimmed some places do it for less than 40 quid

[Ethel]

Bubbles suggest the head gasket's gone if it happens while it's still cold. It could be worth getting the head skimmed but also meticulously check the mating surfaces and studs are clean and all the edges are square.

[Saxo-Fiesta-Mini]

also check the core plugs arent leaky too id always check a cylinder head with a straight edge to ensure it has no gaps

[miniman1965]

If the head has been machined and it still happens also check if the head bolts aren't stretched or head thickness is to thin.This will not alow the head gasket to copress thus making the head gasket not to seal. Hope this helps.

[ANON]

...id always check a cylinder head with a straight edge to ensure it has no gaps

but what do you check your staight edge with ??

THE ONLY WAY TO CHECK A HEAD IS WARPED IS TO GET IT SKIMMED

[Saxo-Fiesta-Mini]

you place a straight edge across the head and using a torch look for light passing underneath the straight edge

thats what i was taught

[ferrox_666]

You dont need to chech a Straight edge for Straightness, I think the clue exposes itself in the name of the tool?
Just a suggestion..

[ANON]

put it this way, i've seen heads that people have checked with a straight edge (usually a metal rule) claimed they are true and needed loads of skimming.

to be honest i thought it was only 70 year olds who still said to check a head with a straight edge

[Sprocket]

put it this way, i've seen heads that people have checked with a straight edge (usually a metal rule) claimed they are true and needed loads of skimming.

to be honest i thought it was only 70 year olds who still said to check a head with a straight edge

I have a few years before I'm 70 years old, and, I own a precision straight edge which cost more than you probably earn in a week!

[Sam Walters]

put it this way, i've seen heads that people have checked with a straight edge (usually a metal rule) claimed they are true and needed loads of skimming.
to be honest i thought it was only 70 year olds who still said to check a head with a straight edge

62 years till i reach that ripe age.