New valve break in.

Discussion in 'Engine, Fuel and Exhaust' started by coopernicus, Nov 9, 2015.

  1. coopernicus

    coopernicus Junior Member Contributor

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    Ok so I know I said I was satisfied with just the cam upgrade but it bit me and I tore down the bike and sent the heads off for porting and new valves. Can someone tell me a good way to properly seat new valves? :D
     
  2. Breeze3at

    Breeze3at Well-Known Member

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    If the person doing the valve work doesn't have any special instructions, I would just ride it as normal.
     
  3. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    +1, like Pete said, check with the shop doing the work.
     
  4. BUBBIE

    BUBBIE Well-Known Member

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    NOTHING OVER 9,000 RPM for the first 1,000 miles...:lero

    That would be My Way...:D

    ask if they replaced the Guides with Bronze or kept stock...? Just for information. Bronze will Out-Last stock guides.

    signed....BUBBIE
     
  5. Jack Klarich

    Jack Klarich Expert Member

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    If the valve job was done correctly, checking spring height and pressures, ride it like Bubbie said:s
     
  6. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    I suspect with the work you identified, that you may have changed the rings too. Those do need a bit of a process to make sure they are seated. Check this out:

    Harley Davidson Forums

    Cheers,

    TQ
     
  7. coopernicus

    coopernicus Junior Member Contributor

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    ha ha ha:lero

    No rings but it is tempting to go big bore since its just sitting there naked on top!

    Ok thanks.
     
    Last edited by a moderator: Nov 9, 2015
  8. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    With the heads off, I would be tempted to replace the rings so you know what condition they are in too. You are already having to replace the head gasket, so taking the jugs in to have them crosshatch honed at an indy is a piece of cake.

    Clean up the pistons, install the new rings then reinstall the pistons on the connecting rods. Put the jugs back on.

    BIG NOTE OF CAUTION: put some rags around the connecting rods filling the holes into the case as soon as you pull each jug off. If you drop anything into the case, the job has just become way larger!!

    Cheers,

    TQ
     
  9. BUBBIE

    BUBBIE Well-Known Member

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    Good Idea from TQ...:s

    ALSO.....

    If you stuff shop towels around the rods to cover openings... NOT JOKING: Take the towels OUT before you put it back together...

    One member Long ago, forgot a small piece of towel he used inside the hole and YES problems...:cry

    :bigsmiley36: that work Good Bye...

    signed....BUBBIE
     
  10. coopernicus

    coopernicus Junior Member Contributor

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    I only have 8000 miles on bike so I'm not too overly worried about the rings. I am having a blast doing this stuff. Never have done any of it before and am learning a lot. Not bad for this old geezer:D Any hoo, life is short..never stop learning and trying new things. Oh yeah, I really appreciate everyones advice and help. Thanks a lot!