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 re-torquing head bolts
#771609
12/12/06 08:18 PM
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Joined: Oct 2005
Posts: 392
OP
Mudrunner
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I havent really ran my truck since i got it all buttoned up but i couldn't remember when to re-torque the head bolts, was it after you let it get to operating temp and then do it hot?
1986 xtra-cab 22re
stock everything
1991 bed
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Re: re-torquing head bolts
[Re: 1986xtracab]
#771610
12/12/06 08:51 PM
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Joined: Sep 2004
Posts: 1,015
Body Damage is Cool
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Esquire812:
*You're safest bet is to follow the maufacturers guidlines. For example FELPRO puts no re-torqueing required in big letters on their packaging, while Engnbldr suggests its done with his graphite headgasket. I do it myself...right after I get the engine up to operating temperature and just prior to re-adjusting the valves after a top end rebuild. Then do a double check at the first oil change and have yet to have a gasket related failure since doing it this way. Just follow the torque sequence that you used when re-installing the head, and that all bolts are evenly torqued. darin's smart <img src="/forums/images/graemlins/cyclops.gif" alt="" />
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 Re: re-torquing head bolts
[Re: ChrisH]
#771611
12/12/06 08:59 PM
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Joined: Oct 2005
Posts: 392
OP
Mudrunner
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awesome, i just put the EB gasket on mine, so later tonight thats what I will be doing, that is after I assumne the position for exxon...haha
1986 xtra-cab 22re
stock everything
1991 bed
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Re: re-torquing head bolts
[Re: 1986xtracab]
#771612
12/12/06 09:05 PM
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Joined: Aug 2004
Posts: 1,298
Body Damage is Cool
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You definitely should. I found out the hard way...You gotta have the cover off to do the valves anyhow.
If Mad Max had a 4runner...
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Re: re-torquing head bolts
[Re: ChrisH]
#771613
12/12/06 09:11 PM
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Joined: Feb 2000
Posts: 1,059
Body Damage is Cool
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Do NOT re-torque a hot (or even warm) head, unless you like your head cracked.
The procedure I use is to fully warm the motor up to operating temp, to the point where the T-stat opens, and then beyond that until it reaches standard operating temp. Then shut it off and allow it to cool *completely*, like overnight. Once it is COMPLETELY COLD TO THE TOUCH, re-torque the head bolts/studs in order, to the proper spec. I have also heard the recommendation to very slightly increase the load on re-torque by 1-2 ft. lbs. so you are sure you are getting enough "bite".
Do this again after 500 miles, and you should be good to go for a long time.
-Jeff
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Re: re-torquing head bolts
[Re: 1986xtracab]
#771614
12/12/06 09:58 PM
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Joined: Sep 2004
Posts: 1,015
Body Damage is Cool
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...after I assumne the position for exxon <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> and just to re-iterate DONT TORQUE YOUR HEADBOLTS WARMlol thanks mosk
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Re: re-torquing head bolts
[Re: mosk]
#771615
12/12/06 09:58 PM
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Joined: Aug 2004
Posts: 1,298
Body Damage is Cool
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OK, you got me there, Jeff...I failed to mention letting it cool first.
If Mad Max had a 4runner...
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Re: re-torquing head bolts
[Re: 1986xtracab]
#771616
12/13/06 01:53 AM
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Joined: Sep 2003
Posts: 286
Mudrunner
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Do your follow up when the engine is stone cold! as in over night. <img src="/forums/images/graemlins/cheers.gif" alt="" />
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Re: re-torquing head bolts
[Re: BennyBoy]
#771617
12/13/06 03:37 AM
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Joined: Oct 2005
Posts: 392
OP
Mudrunner
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well the truck will be sitting untill about 1pm tomorrow and then i'll be out of school and have time to re-torque.
1986 xtra-cab 22re
stock everything
1991 bed
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Re: re-torquing head bolts
[Re: 1986xtracab]
#771618
12/13/06 11:16 PM
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Joined: Jul 2004
Posts: 72
Getting the Wheeling Fever
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Is it necessary to torque the head bolts after 500 miles of a rebuild? Just curious?
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