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ef head 

 

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 Post subject: ef head
Posted: Sat Feb 17, 2007 6:18 pm 
Parts Gopher
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Age: 46

Posts: 53

Joined: 21st Jan 2007

Location: Edwardstown
SA, Australia

hi does anyone know what the minimum thickness is for a ef 4.0 head and also what the original thickness is when new.
regards :D

 

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Posted: Sat Feb 17, 2007 10:56 pm 
Getting Side Ways
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Ride: EF Fairmont Station Wagon.

Power: 150 rwkw

Location: Mandurah
WA, Australia

The gregorys manual say's to to check head thickness by measuring between three measuring pad's, one on the intake side on # 3 intake port and two on the exhaust side towards the ends. any thing under 1.5mm from pad to gasket surface and the head should be replaced. I wouldn't take this as gospel because plenty of people remove 40 thou to raise compression and probably go less than this measurement.

 

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4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
Home port job. 1636 Wade cam. Wildcat Extractors, 2 1/2" cat and exhaust.
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Posted: Sun Feb 18, 2007 3:19 pm 
Getting Side Ways
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Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

40 thou is 1.0mm or near enough.

 

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Posted: Sun Feb 18, 2007 9:39 pm 
Stock as a Rock
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Age: 37

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Joined: 6th Nov 2005

Ride: XHII ute

Location: Brisbane
QLD, Australia

what compression ratio would you end up with 40thou shaved off?
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 Post subject: ef head
Posted: Mon Feb 19, 2007 10:36 pm 
Parts Gopher
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Age: 46

Posts: 53

Joined: 21st Jan 2007

Location: Edwardstown
SA, Australia

thanks for your help guys but i found out today that my head is stuffed seems like the previuos owner must have cooked it as she was soft and warped almost 2mm.

 

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Posted: Sat Feb 24, 2007 11:08 pm 
Getting Side Ways
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Ride: 2000 Au wagon

Location: some where in nsw
NSW, Australia

just for info sake,,the thickness of the 4 litre and 3.9 heads from top to bottom should be 15 cms

 

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