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Thread: Head off, Pistons out, need some technical data -

  1. #1
    Join Date
    Feb 2014
    Posts
    158

    Head off, Pistons out, need some technical data -

    Hey all, about to swap out the rings on my little red car.

    need to know the following -

    Ring gap size
    Head bolt tightening torque and sequence
    Conrod bolt tightening torque

    anything surprises i should be aware of also? i've rebuilt many engines over the years but nothing this as quirky as the E07A!

  2. #2
    Join Date
    Jul 2005
    Location
    Camberley
    Posts
    90
    Ring gap size is:
    top = 0.15 to 0.3mm. The up and down tolerance of the top ring in the piston groove is 0.035 to 0.060mm, with a service tolerance of 0.13mm
    second = 0.3 to 0.45mm
    oil = 0.2 to 0.5mm
    Service limit on each is 0.6mm

    Head bolt tightening torque is 6.2 - 6.8kg-m. Oil the threads first.

    Cylinder head sequence, if you have the camshaft pulley on your right, and they are numbered 1 to 8 from top left to right and then bottom left to right, is 3 6 2 4 1 8 4 5
    Note that when you take it off it is 8 1 5 4 6 3 7 2

    Conrod cap torque is 3.2kg-m

    Hope this helps,

    Stu
    ! Stuei

  3. #3
    Join Date
    Feb 2014
    Posts
    158
    Quote Originally Posted by stu g View Post
    Ring gap size is:
    top = 0.15 to 0.3mm. The up and down tolerance of the top ring in the piston groove is 0.035 to 0.060mm, with a service tolerance of 0.13mm
    second = 0.3 to 0.45mm
    oil = 0.2 to 0.5mm
    Service limit on each is 0.6mm

    Head bolt tightening torque is 6.2 - 6.8kg-m. Oil the threads first.

    Cylinder head sequence, if you have the camshaft pulley on your right, and they are numbered 1 to 8 from top left to right and then bottom left to right, is 3 6 2 4 1 8 4 5
    Note that when you take it off it is 8 1 5 4 6 3 7 2

    Conrod cap torque is 3.2kg-m

    Hope this helps,

    Stu

    absolutely perfect. thankyou!

  4. #4
    Join Date
    Jul 2005
    Location
    Camberley
    Posts
    90
    Hey, you're more than welcome, hope it goes well.

    Stu
    ! Stuei

  5. #5
    Join Date
    Feb 2014
    Posts
    158
    main cap torques too? didn't realise i'd have to take the ladder frame off to get to the rod bolts!

  6. #6
    Join Date
    Jul 2005
    Location
    Camberley
    Posts
    90
    If you mean the 10mm bolts which clamp the crankshaft down, they are 4.8kg-m.
    ! Stuei

  7. #7
    Join Date
    Feb 2014
    Posts
    158
    yeah, those, thanks!

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