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Valve covers only hand tight?

Discussion in '1st Gen. Tacomas (1995-2004)' started by obxmac, Jan 28, 2016.

  1. Jan 28, 2016 at 6:43 PM
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    obxmac

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    obxmac [OP] New Member

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    Am replacing head gasket on my '99 Tacoma. Was shocked to find them hand tight, can I use Locktite?
     
    obxmac, Jan 28, 2016
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  2. Jan 28, 2016 at 6:46 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    Are you referring to the valve cover gasket or head gasket?
     
    FirstGen Jer, Jan 28, 2016
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  3. Jan 28, 2016 at 6:50 PM
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    obxmac

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    obxmac [OP] New Member

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    Sorry, valve cover.
     
    obxmac, Jan 28, 2016
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  4. Jan 28, 2016 at 6:56 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    Oh ok sounds right then. Ya those are not torqued too tight the torque setting for those bolts is 53 INCH pounds that converts to about 5 FOOT pounds.
     
    FirstGen Jer, Jan 28, 2016
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  5. Jan 28, 2016 at 6:56 PM
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    Fenwick1993

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    Fenwick1993 Hillbilly

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    I think the looseness is from seal compression, not the bolts backing off. I have used the blue Permatex sealant on valve cover bolts before.
     
    Fenwick1993, Jan 28, 2016
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  6. Jan 28, 2016 at 7:15 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    :notsure:As far a the locktite I have heard mixed suggestions for that. Some say blue locktite is affected by heat so it's useless for this type of application. But then some say it has worked for them?
     
    FirstGen Jer, Jan 28, 2016
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  7. Jan 28, 2016 at 7:44 PM
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    MQQSE

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    MQQSE I take naps

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    I believe he's talking about Permatex Rubber Sealant and Gasket Dressing, not Loctite. @Fenwick1993
     
    MQQSE, Jan 28, 2016
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  8. Jan 28, 2016 at 7:52 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    Would that help putting that on the bolts to keep them tite?
     
    FirstGen Jer, Jan 28, 2016
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  9. Jan 28, 2016 at 8:05 PM
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    o0oSHADOWo0o

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    o0oSHADOWo0o Just lurking in the darkness

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    o0oSHADOWo0o, Jan 28, 2016
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  10. Jan 28, 2016 at 8:14 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    thanks, that's what I was referring to as well in my second post. But I have heard/read that it is affected my heat so used in this type of application it does not perform well? Wonder how hot those bolts get really though? That locktite is a high temp up to around 450° I believe. I don't really think they would get that hot?
     
    FirstGen Jer, Jan 28, 2016
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  11. Jan 28, 2016 at 8:26 PM
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    o0oSHADOWo0o

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    o0oSHADOWo0o Just lurking in the darkness

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    To be sure I would have to look at the product spec sheet to see what the highest temperature this product could withstand before it degrades.

    Loctite makes thread locking compounds in various different strengths. To break the bond of the more permanent types, I have had to use a torch to get the parts loose.

    I'm almost sure they make something that will withstand the normal operating temperature of an engine.
     
    o0oSHADOWo0o, Jan 28, 2016
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  12. Jan 28, 2016 at 8:30 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    Loctite 29513 246 Thread Locker 10 mL Bottle, Blue
    http://www.amazon.com/Loctite-196508-Temperature-Strength-degrees/dp/B00B749NJC this is the blue strength and high temp loctite rated up to 450°.
     
    FirstGen Jer, Jan 28, 2016
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    o0oSHADOWo0o[QUOTED] likes this.
  13. Jan 28, 2016 at 8:43 PM
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    o0oSHADOWo0o

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    o0oSHADOWo0o Just lurking in the darkness

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    well there's your answer. :thumbsup:

    If your engine ever got up to 450 degrees, I would think you might need to do some work to it anyway.
     
    o0oSHADOWo0o, Jan 28, 2016
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  14. Jan 28, 2016 at 8:45 PM
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    FirstGen Jer

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    FirstGen Jer Well-Known Member

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    Thanks for the help @o0oSHADOWo0o :cheers:
     
    FirstGen Jer, Jan 28, 2016
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Loctite 242 Blue Interior and Exterior Sealant 3/4 Length x 1/4 Width, 10 mL
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