Chadicles
Member
Registered: 8th Jun 09
Location: Westbury, Wiltshire
User status: Offline
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Hey I've just removed a coscast head off a donar engine to fit on my c20xe, just waiting for the head to be pressure tested and skimmed, but I have no idea of torque figures for the head bolts and by what degrees they have to be turned by. Any one that had this info it would be much appreciated.
Also I've heard about removing he wedge out of he inlet butterfly, what does this intail and what are the gains? Cheers chad
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gsiwannabe
Member
Registered: 28th May 08
Location: Sudbury, Suffolk
User status: Offline
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its 45 nm and 2 lots of 90 dergree turns on all head bolts
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Chadicles
Member
Registered: 8th Jun 09
Location: Westbury, Wiltshire
User status: Offline
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Cheers mate ur a lifesaver!
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Mattb
Member
Registered: 2nd Feb 03
Location: Under your sisters bed
User status: Offline
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actually vauxhall decided to change the torque setting later on in the life of the XE - mainly because of the porus issue.
The change was
25nm
60 degrees
60 degrees
60 degrees
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Limecat
Banned
Registered: 25th Jun 05
Location: The Internet
User status: Offline
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quote:
Originally posted by Mattb
actually vauxhall decided to change the torque setting later on in the life of the XE - mainly because of the porus issue.
The change was
25nm
60 degrees
60 degrees
60 degrees
I have never had an issue with 3 lots of 90 degree angle tighteneing but you are indeed correct.
However, SBD recommend it as;
25nm and then 3 lots of 65 degrees. Only 15 degrees difference and TBH most people just make an educated guess as they dont have an angle gauge. 
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Chadicles
Member
Registered: 8th Jun 09
Location: Westbury, Wiltshire
User status: Offline
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Haha how confusing! Umm ok then cheers for the info! Have to change the head as my gm head has gone porous chucking all my oil into the header tank! I do have a angle gage everything gets done properly when it comes to me! Cheers again chad
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