bigal1978

any one shed any light for me i removed the head of my 2wd cossie as it was blowing water out the header tank like a water fall
here are sum pics i cant see any cracks any signs im hopin it was the cometic gasket that failed nothin else hope to get block and head tested tuesday we will see




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shit pics cheap diggi cam but u get the idea

cossie4i+

iTrader: (15)

Nice valve piston contact on the inlet

Hope you get it sorted soon

Steve.

Stu @ M Developments

iTrader: (12)

Normal reason for failure is teh head bolts coming loose in my experience.

Did any feel a little slack upon removal?

Alvyn

iTrader: (1)

[quote="cossie4i"]Nice valve piston contact on the inlet


that's a norm on most yb's

have had a small crack 3/4 down a cylinder b4 also your best off to wait and see what the checks show! number 1 looks abit sus maybe

bigal1978

i undone them with a 3/8 ratchet with xtesion bar and 1/4 10mm socket came off easy

now is the head stuffed ?

oh i did a compression test and all were 10/150psi each cly

bigal1978

the old owner fitted a cambelt wrong hence the contac i belive as it was timed rong

bigal1978

going by pic 5 i think its on its last skim will the head bolts becoming slack mean new head ?

Stu @ M Developments

iTrader: (12)

They all came loose then. mystery probably solved. lol

Alvyn

iTrader: (1)

know just that they weren't done up properly!

get the head checked and measured and go from there!

richm

why do they "come loose" Stu? not torqued up properly in the first place? or just lose tension with age?

bigal1978

im going to say that they were not torqed up properly as the rench used was demed fooked a few weeks after i done this but i did do around 2000 miles on it but now refitted it in to a new car and had this problem
but on old car i had all samcos swirl pot baliyes header tank ect now all standered if that would make adiffrence in me not noticeing

SPADGE

Using old head bolts will cause them to come loose!
The bolts are made to stretch so after fitting and then the engine getting warm the head will expand and the stretch will compensate for that expansion.

If you use old bolts then they would have already stretched and so the head will just pull them thus loosening them from the block once the engine has cooled!

Was that block 'properly' cleaned-up before fitting that cometic gasket? What is left on the top of the block looks like very old debris from a previous standard type gasket to me but it could just be the shonky camera/pics

richm

spadge - it never entered my mind that old bolts may be used! lol.

bigal1978

no it was all new bolts from woodford does seem to be shitty on block but i tho i cleaned it all

ill just take 1 of theses
and hope thre is no more damage

Turbo Zetec

iTrader: (1)

exactly what i was thinking i'd be tempted to give it a slight skim.