Hi I replaced the head on my sons 1983 998 mini with an unleaded version ( refurbed by mini speed ) around six months ago and now the head gasket has blown between cylinders 1 & 2 any ideas why, any thing I should check before refitting. I have stripped it down following a compression test finding no compression between 1&2 and there is no obvious reason to what could have caused this.
Blown Head Gasket
Started by
brdaffey
, Mar 27 2010 04:57 PM
6 replies to this topic
#2
MINI 1
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Posted 27 March 2010 - 05:17 PM
When you put the cylinder head on the car first time around , was the headgasket tourqed twice . Once when the head is fitted and then again when the engine is warm?
#3
brdaffey
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Just On Tickover
Posted 27 March 2010 - 05:34 PM
yes Head torqued down in stages to the values in the haynes manual and retorqued when warm
#4
Ouster
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Posted 27 March 2010 - 07:01 PM
Don't you drive it after fitting for 50 or so miles, let it cool, and then retorque it? i.e not when it's warm?
#5
Carlzilla
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Camshaft & Stage Two Head
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Posted 27 March 2010 - 07:32 PM
from what ive read, it either blew for no apparent reason, or it may have been that your son keeps in the higher rpm range a touch to often, which may have reduced the life of the gasket
#6
Pauly
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Posted 27 March 2010 - 08:10 PM
Was the head skimmed at all? Also what type of headgasket was used?
#7
minimate
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Learner Driver
Posted 27 March 2010 - 08:57 PM
Has it been overheated or run with low water level?
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