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Thread: head torque specs

  1. #1
    Junior Member Just broke my cherry!
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    head torque specs

    I had the rear rocker box bolt come out and wedge alongside the exhaust valve spring. It ticked for awhile and I couldn't figure what it was till one of the keepers came out and it went to running on one cylinder. Probably hit the piston and bent the valve. did it at an idle, so I'm pulling the head today. one of my dilemmas is I am not at home and do not have my manual. Can someone provide correct torque specs for the top end? Head bolts, rocker boxes, rocker covers, intake, exhaust, etc? Much thanks. 95 FXDWG stock (pretty much) engine. Also I've been told that 35 lbs is a good alternative to the torque/turn method used by harley, any thoughts? Thanks again, lvhdude

  2. #2
    Senior Member Senior Member Horse's Avatar
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    Re: head torque specs

    Info from 93HD manual FLT and FXR

    Head bolts, be sure holes are clean and dry

    Torque sequence

    Front Cylinder #1 front left #2 rear left #3 front right #4 rear right
    Rear Cylinder #1 rear left #2 front left #3 rear right #4 right front

    Clean bolts and lubricate (engine oil)

    start at cylinder head bolt #1 and torque to 7 ft lbs than tighten bolts #2 #3 #4 to 7-9 ft lbs

    Start again with head bolt #1 #2 #3 #4 and torque to 12 - 14 ft lbs

    mark a line cylinder head aligned with a mark on the head bolt and
    follow the same torquing sequence and tighten each bolt a 1/4 turn

    procedure is finished


    Push rods (stock) rear exhaust purple
    rear intake blue
    front intake yellow
    front exhaust green


    rocker boxes,
    Slowly snug lower rocker box fasteners in small increments using cross pattern. 5/16 bolts torque to 15-18 ft lbs 1/4 bolts torque to 10-13 ft lbs


    rocker covers
    10-13 ft lbs cross pattern small increments


    intake,
    intake manifold to cylinder 6-10 ft lbs


    exhaust,
    not sure flange square to cylinder as possible and snug
    equal torque on each nut

    Hope this helps
    HCG-Pacific Northwest Group
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  3. #3
    Senior Member Senior Member HeadDoc's Avatar
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    Re: head torque specs

    great post horse. its nice to see motorcycle info on the hcg
    "the blues had a baby and they named it rock and roll"

  4. #4
    Junior Member Just broke my cherry!
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    Re: head torque specs

    Thanks for the info Horse, exactly what I needed.

  5. #5
    Senior Member Senior Member Horse's Avatar
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    Re: head torque specs

    Hey lvhdude how did things work out?
    HCG-Pacific Northwest Group
    Some mistakes are too much fun to only make
    once.
    839

  6. #6
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    Re: head torque specs

    It went togeather perfectly, after some hunting for a head gasket. I bought a kit off e-bay that was a very nice kit wit everything, head,(2 sets) base, rocker boxes, intake, carb, exh, all the good stuff but the gaskets were 10and 15 thousands thicker than what came out. I ended up buying a solo gasket from the dealer that was the same part # as what came out and the motor runs great. Oh yeah the kit had all the push rod tube seals, and valve stem seals too. Reliant gasket, 48.00 +10 for freight. Found a pair of manlet SS exhaust valves delivered for 24.00 as oposed to the dealers 52 for 1 valve. dealer was around 100 for a gasket kit. Anyway thanks for the torque specs and sequence. She's up and running great. Joe.

  7. #7
    Senior Member Senior Member Horse's Avatar
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    Re: head torque specs

    Thanks lvhdude Very glad to hear that all went well.
    HCG-Pacific Northwest Group
    Some mistakes are too much fun to only make
    once.
    839

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