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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » torque setting for head bolts


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Author torque setting for head bolts
sumner2k3
Member
Registered: 12th Jan 06
Location: South Wales Drives: Clio 172
User status: Offline
30th Jan 08 at 00:41   View User's Profile U2U Member Reply With Quote
what is the torque setting for the head bolts on a c20xe?
Limecat
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Registered: 25th Jun 05
Location: The Internet
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30th Jan 08 at 01:31   View User's Profile U2U Member Reply With Quote
You will probably get a few different answers depending on your take on it?

Initially it was 25nm then 3 lots of 90 degree angle tightening.

That was revised to 25nm then 3 lots of 60 degree angle tightening. (Apparently as a result of the 'porous head' issues)

SBD says with a standard gasket it should be 25nm and 3 lots of angle tightening at 65 degrees.
sumner2k3
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Registered: 12th Jan 06
Location: South Wales Drives: Clio 172
User status: Offline
30th Jan 08 at 01:39   View User's Profile U2U Member Reply With Quote
what do you mean by the porous head issues? tightening it wrong will cause a porous head?
Limecat
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30th Jan 08 at 01:56   View User's Profile U2U Member Reply With Quote
It was due to a crack in the waterway, some people say it is a result of the way the head is torqued down - ie. too much causing undue pressure.
sumner2k3
Member
Registered: 12th Jan 06
Location: South Wales Drives: Clio 172
User status: Offline
30th Jan 08 at 01:58   View User's Profile U2U Member Reply With Quote
ahh rite.. so 25nm and 3 lots of 65 degree angle tightnings is fine then mate

 
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