I don't know anything about hot torquing, but it sounds like your concern is
leakage.
Though you probably already know them, here are a few things to ensure
proper assembly:
1. Check the surface of the block for pulled material around the bolt
holes.
2. Clean the block threads with a tap/thread chaser
3. Use new bolts
4. Apply a thin coat of grease to the threads AND the bearing surface of
the bolt head.
5. Use a good torque wrench.
6. Make an offering to the head gasket goddess.
<dnw>
1972 Midget
1998 Safari
1999 9-3
1964 (Me)
----- Original Message -----
From "Charles F. Christ" <cfchrist at earthlink.net>
To: "Brent Wolf" <wolfbj@prodigy.net>; "Spridgets"
<spridgets@autox.team.net>
Sent: Friday, January 25, 2002 7:52 AM
Subject: Re: 1500 head torque
> hot torque? from what i know about torqueing a head and hot / cold you
are
> asking to break a retainer or crack a head retorquing when hot. it has
> always been explained to me to retorque a head after 1 cycle of
> cold-hot-cold or in some cases no retorquing (permatorque gaskets)and
other
> cases after a specific amount of mileage depending upon engine or gasket
> manufacturers. if you retorqued a hot engine , upon cooling down the
> contraction of the fastners (let alone elasticity of fastners when at
> operating temperature) could result in the fastner at more that the
> allowable stretch for that fastner wich could lead to a fastner failure.
in
> adition it could be very possible for a casting to develop a crack in that
> same area by exceeding the casting's ability tosupport the torqued fastner
.
> the cold retorque would result in a more "even" job as in top engine
area's
> there are also hot spots . combustion chamber and exhaust port areas are
> much hotter than lets say intake ports. and depending on design front of
a
> head vs. rear of a head will show a bit of difrence in temperatures due to
> coolant circulation patterns in the block / head. so hot retorque can
lead
> to some very irregular end torque values vs. cold retorque values being
all
> normalised to ambient temperature. now if a manufacturer sez to retorque
> when hot then by all means follow their instructions! but to date i do
not
> know of any that reccomend that . i could be wrong! but like i said i'm
> not aware of any at this time of writing. and this does not even address
> the posibilities of distortion of mating surfaces or tearing out threads
in
> the block.
>
> chuck.
> ----- Original Message -----
> From: "Brent Wolf" <wolfbj@prodigy.net>
> To: "Spridgets" <spridgets@autox.team.net>
> Sent: Friday, January 25, 2002 6:49 AM
> Subject: 1500 head torque
>
>
> > Listers,
> >
> > What is the experience, feeling, etc. on hot torqueing the head on the
> 1500?
> >
> > I know the Haynes manual does not say to and I have known plenty of
other
> > manuals for engines that don't say to hot torque, but those heads always
> > developed leaks. I have also known several manuals that specifically
said
> > DO NOT HOT TORQUE for fear of cracking the head.
> >
> > TAI
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