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Thread: head and cylinder torque pattern and specs

  1. #1
    Junior Member Mini jipcee's Avatar
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    Default head and cylinder torque pattern and specs

    Hey all, I'm working on a friends 95 vmax 800. Can anyone tell me the head torque pattern and specs. also cylinder nut torque?
    Thanks in advance..........

  2. #2
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    base bolts are 20 ft-lb. the head bolts 16 ft-lb. each set of two heads has sequence. go side to side when torqueing. #1 bolt will be first bolt in middle of head, #2 will be on other head at front. and so on. there are 10 nuts total per head set. 3:16 (yammie tony)
    WELCOME TO YAMAHA HEAVEN / WINTER THUNDER/ VMAX4 800 5.91 e.t.
    1995 VMAX 800- FASTEST YAMAHA EVER RUN AT THE AMERICAN SNOWMOBILER MAG SHOOTOUT. 105.16 mph
    2000 SRX 700 (10.458 @ 120.98, 1.39 60. on tar)
    2002 SRX 700 (110 in 1000 f.t. on radar 8bu-10)
    5.74 e.t. 85.15 on grass
    1979 srx 440
    YAMAHA PERFORMANCE SNOWMOBILES
    ''my old dinosaur just ate your new sled for lunch ''

  3. #3
    Junior Member Mini jipcee's Avatar
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    Thanks Toni, I'm a little confused......Like this?

    vmax4 head torq seq.jpg

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    try and follow me. on your diagram .
    1 is your 5
    2 is your 10
    3 is your 9
    4 is your 8
    5 is your 1
    6 is your 4
    7 is your 2
    8 is your 3
    9 is your 4
    10 is your 7
    3:16 (yammie tony)
    Last edited by YAMMIEGOD3:16; 11-04-2014 at 07:32 PM.
    WELCOME TO YAMAHA HEAVEN / WINTER THUNDER/ VMAX4 800 5.91 e.t.
    1995 VMAX 800- FASTEST YAMAHA EVER RUN AT THE AMERICAN SNOWMOBILER MAG SHOOTOUT. 105.16 mph
    2000 SRX 700 (10.458 @ 120.98, 1.39 60. on tar)
    2002 SRX 700 (110 in 1000 f.t. on radar 8bu-10)
    5.74 e.t. 85.15 on grass
    1979 srx 440
    YAMAHA PERFORMANCE SNOWMOBILES
    ''my old dinosaur just ate your new sled for lunch ''

  5. #5
    Junior Member Mini jipcee's Avatar
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    Got it! Thank you! Do you happen to know the ring end gap?
    Thanks again..............

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    i can dig that out for ya. 3:16 (yammie tony)
    WELCOME TO YAMAHA HEAVEN / WINTER THUNDER/ VMAX4 800 5.91 e.t.
    1995 VMAX 800- FASTEST YAMAHA EVER RUN AT THE AMERICAN SNOWMOBILER MAG SHOOTOUT. 105.16 mph
    2000 SRX 700 (10.458 @ 120.98, 1.39 60. on tar)
    2002 SRX 700 (110 in 1000 f.t. on radar 8bu-10)
    5.74 e.t. 85.15 on grass
    1979 srx 440
    YAMAHA PERFORMANCE SNOWMOBILES
    ''my old dinosaur just ate your new sled for lunch ''

  7. #7
    Senior Member ProStock
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    End Gap(installed)
    Top ring -.35-.55mm
    2nd ring- .35-.55mm
    Side clearance
    Top ring .02-.06mm
    2nd ring-.02-.06mm
    This is straight from the Yamaha service manual. Happened to have it out as I'm reassembling my 800.

  8. #8
    Junior Member Mini jipcee's Avatar
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    Awesome, Thanks hammer and tony!

  9. #9


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    Would you know the pattern for 96 vmax 600. And torque specs for cylinder and head ?

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    VIP Member A couple of bucks's Avatar
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    Last edited by A couple of bucks; 08-10-2020 at 09:21 AM.
    Dannyboy

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