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Thread: Specs on head bolt Torque?? WHat are they?

  1. 08-23-2006, 08:46 AM #1
    300excrazy98's Avatar
    300excrazy98
    300excrazy98 is offline Senior Member
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    Specs on head bolt Torque?? WHat are they?

    hey what are the ft. lbs. spec for the head bolts?

    also the base bolts? on the cylinder..

    thanks
    05' Yamaha YFZ 450 , TC, Galfer, Lsr, Hiper, GYRT, K&N, Miaere, Pro Design, Pro Taper, Maxxis, Douglas, Boyesen, Keihin, NGK, PRM, AC, Bomb Squad, Tether
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  2. 08-23-2006, 12:06 PM #2
    atvmxr
    atvmxr is offline Registered User
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    i guess i have built too many motors, I know off the top of my head that the cylinder head nuts are 21 ft #'s.

    The base I am not so sure, i think 35
    86, 87, & 88 x 2 TRX250R's, 05 450R, couple 88 blasters, couple 85 350x's, 87/85 TRX350XR hybrid, 88 zilla, 92/87 Hybrid LT250/500R, & JP Racing Outlaw chassis w/ LT500R HRD motor
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  3. 08-23-2006, 12:08 PM #3
    250r4life
    250r4life is offline You can't buy skills...
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    i thought the head nuts are 21-28, and the base nuts are 42-48...
    06 YFZ450
    1988 TRX 250R
    2001 XR 50
    1984 Honda 200S
    1776 Turbo Sandrail
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  4. 08-23-2006, 12:39 PM #4
    zedicus00
    zedicus00 is offline Senior Member
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    straight from manual
    head 17 - 21 ft lbs
    jug 27 - 35 ft lbs
    God is not here today.
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  5. 08-23-2006, 09:27 PM #5
    atvmxr
    atvmxr is offline Registered User
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    Boo-Yah!! straight off the cuff ok any way stepping down from my " I KNow 250R poduim."
    86, 87, & 88 x 2 TRX250R's, 05 450R, couple 88 blasters, couple 85 350x's, 87/85 TRX350XR hybrid, 88 zilla, 92/87 Hybrid LT250/500R, & JP Racing Outlaw chassis w/ LT500R HRD motor
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  6. 08-24-2006, 08:50 AM #6
    300excrazy98's Avatar
    300excrazy98
    300excrazy98 is offline Senior Member
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    thanks

    ill torgue the head bolts to 21 and the bases to 35
    05' Yamaha YFZ 450 , TC, Galfer, Lsr, Hiper, GYRT, K&N, Miaere, Pro Design, Pro Taper, Maxxis, Douglas, Boyesen, Keihin, NGK, PRM, AC, Bomb Squad, Tether
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