2012 SI Valve Adjustment Question
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Thread: 2012 SI Valve Adjustment Question

  1. #1
    Greenhorn
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    2012 SI Valve Adjustment Question

    Dealer wants $600.00 to do a valve adjust on my 148K mile Civic SI. I don't know a ton about valve adjustments but I know enough that 600.00 is pretty much robbery. I'm not afraid to get into the engine and do this myself. My question is does anything have the clearance numbers for my engine?
    bfaided1984 likes this.

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  3. #2
    One Bad Mama Jama!!!
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    This is for K24Z7:
    http://www.hocivic.com/valve_clearan...4z7_-1141.html

    Valve Clearance
    Intake: 0.21-0.25 mm (0.009-0.009 in)
    Exhaust: 0.25-0.29 mm (0.010-0.011 in)

    Edit: Updated link to Si (k24z7) and added specs
    Last edited by RedRocket; 10-11-2019 at 10:31 AM.
    Teeps and bfaided1984 like this.
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  4. #3
    Platinum Member Teeps's Avatar
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    Make sure the engine is stone cold before checking/adjusting the valve lash.
    bfaided1984 likes this.
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  6. #4
    Platinum Member bfaided1984's Avatar
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    Solid info fellas. Will be using this soon.
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  7. #5
    Greenhorn
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    Intake: 0.21-0.25 mm (0.009-0.009 in)
    Exhaust: 0.25-0.29 mm (0.010-0.011 in)
    Lock nuts torqued to 10 lb-ft

  8. #6
    Greenhorn
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    Talk the dealer down! I got the Glendale Honda dealership to perform my valve adjustment, oil change, and top off fluids for just under $400 out the door!! And Glendale is an expensive place to shop and live. Talk them down if you don’t have time to do it yourself.

    And yes, our cars need to be dead cold when working on anything near the cylinder head. I have an 8th gen Si, but the work is essentially the same.

  9. #7
    Nooblets eaeaerick's Avatar
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    Is this an age of vehicle related maintenance as well as mileage? Was thinking about this the other day however my 13' only has 55k on it.
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  10. #8
    Big Pimping!!! DOHCtor's Avatar
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    I have done it 3 times in the course of the last 238k miles. I may be a bit picky however...

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  11. #9
    Platinum Member Teeps's Avatar
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    Quote Originally Posted by eaeaerick View Post
    Is this an age of vehicle related maintenance as well as mileage? Was thinking about this the other day however my 13' only has 55k on it.
    Time as perceived by humans is not a factor with regard to valve clearance... unless you want to make it a thing.

    I checked the valve lash on my '12 EX a couple years ago at 31500 miles.
    Only found one exhaust valve that needed adjusting, it was too tight, but not by much.
    My service log notation says all other valve lash was at the max. allowable clearance; which is better than being tight.
    Or, slightly noisy valves are happy valves. Though Honda recommends to adjust valve lash only if noisy.
    (NOTE: we argued for years to remove the notation: adjust valve only if noisy, but Japan would not budge.)

    The tight valve does not complain until the valve seat is damaged.

    If you have kept the engine oil changed at recommended intervals. The valve lash on you engine should be ok for another 50k miles.
    However, the only way to know for sure is to remove the valve cover and physically check them....
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  12. #10
    Greenhorn
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    Just did my first one at 318,000km. I don't know how necessary it was, but I figured I'd do it. $330 plus tax. I'm in Toronto, Canada.

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