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phongus
Fordmods Junkie
Age:22
Posts: 8237
Joined: 17 May 2005
Location: Melbourne VIC, Australia
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 Posted: Mon Apr 28, 2008 9:56 pm Post subject: |
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| FordFairmont wrote: | | i would leave it. The headbolts are meant to be torqued once i believe |
WHS. The head bolts are torque to yield...or something along those lines. Only need to be tightened once. Though you can re-tighten the exhaust and inlet bolts, some might come loose the first time round.
phong =P~ |
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Punnisher_42
Fordmods - Getting Side Ways
Age:25
Posts: 632
Joined: 10 Nov 2004
Location: Tingalpa QLD, Australia
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| Posted: Fri Jun 13, 2008 4:56 pm Post subject: |
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| mechanic told me and we did retorque the head bolts (back them off and retighten)... |
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FordFairmont
Fordmods - Getting Side Ways
Posts: 2752
Joined: 08 May 2007
Location: Sunny QLD, Australia
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| Posted: Fri Jun 13, 2008 5:03 pm Post subject: |
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| Punnisher_42 wrote: | | mechanic told me and we did retorque the head bolts (back them off and retighten)... |
what for? |
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Punnisher_42
Fordmods - Getting Side Ways
Age:25
Posts: 632
Joined: 10 Nov 2004
Location: Tingalpa QLD, Australia
View User Gallery (10)
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| Posted: Fri Jun 13, 2008 5:11 pm Post subject: |
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heating and cooling of the motor and settling of the new gasket may cause uneven tension on the head bolts. That is the theory anyway. Certainly hasn't caused any problems by doing it, but i have no idea whether it was really necessary.
If others are sayin no then i wouldn't waste time with it when i have to do it again... |
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TROYMAN
Technical Contributor
Age:34
Posts: 2236
Joined: 07 Nov 2004
Location: South Western Sydney NSW, Australia
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| Posted: Fri Jun 13, 2008 5:23 pm Post subject: |
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| Punnisher_42 wrote: | | mechanic told me and we did retorque the head bolts (back them off and retighten)... |
is your mechanic an old school mechanic??
your suppose to re torque head bolts by nipping them up so to speak.
not un doing them and doing them back up that defeats the purpose of re tensioning them..
but as others have said you dont need to re torque the had bolts on a i6 falcon as they are torque to yield bolts.. now you risk early failure of the head bolts and gasket because you have undone them and done them up again(stretched the bolts). they are only suposed to be torqued once.. |
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