Urgent Lash Pad appeal | The Z Club of Great Britain
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Urgent Lash Pad appeal

Discussion in 'Engine' started by racer, Mar 20, 2015.

  1. racer

    racer
    Z Club Member

    Hi guys
    As per the title. I'm after some thick lash pads for my current L6 build.

    I need 6x200 thou and 6x 250 thou.

    Much appreciated
    Matt
     
  2. jonbills

    jonbills
    ZClub Administrator
    Staff Member Moderator

    Hi Matt,
    Presumably no chance a set off a standard head will be anywhere near that thick?
     
  3. racer

    racer
    Z Club Member

    Thanks John
    but got loads of those all to thin i'm afraid. It's so annoying when I told the engine builder 2 weeks ago that we may need some and to let me know then.
     
  4. Rob Gaskin

    Rob Gaskin Treasurer Staff Member Moderator

    So why would you need a special size - valves sitting too high, valve stems short?
     
  5. datsun dave

    datsun dave
    Z Club Member


    Tried Dave Jarman or Fourways ?
     
  6. jonbills

    jonbills
    ZClub Administrator
    Staff Member Moderator

    When you regrind the cam, the base circle of the lobe gets smaller, moving it away from the rocker, so you move the rocker up to meet the cam again by having a thicker lash pad and adjusting the tappet thing (I.e. move the rocker up at both ends, keeping it level - if you don't keep it level with a thicker lashpad, you move the cam contact patch away from the valve, and if you're not careful, off the contact pad)
     
  7. Rob Gaskin

    Rob Gaskin Treasurer Staff Member Moderator

    I see so isn't it better to start again with a new cam?
     
  8. jonbills

    jonbills
    ZClub Administrator
    Staff Member Moderator

    I think good new blanks may be hard to come by. Also, (I'm guessing) if you want big lift, you may have the same problem even with a new blank.
    If you think about it, it's the base circle you grind away, not the lobe, so the bigger the lift the smaller the base circle.
     
  9. racer

    racer
    Z Club Member

    Quote "Tried Dave Jarman or Fourways ?"

    Yeah Dave is looking for me now. I've tried MSA, and Rabello but no joy.
    Forgot about Fourways. I'll ring them asap.
     
  10. Mr.G

    Mr.G
    Z Club Member

  11. racer

    racer
    Z Club Member

    Cheers George
     
  12. richiep

    richiep
    Z Club Member

    Maybe try Schneider?

    http://schneidercams.com/7191738StandardWearCap-1.aspx

    They have .205 but the biggest is .220.

    On the new blanks front, I noticed recently Schneider are now only doing regrinds on customer cores for cams above stage 3. Limited availability of suitable blanks?... Could get interesting.
     
  13. racer

    racer
    Z Club Member

    Thanks Richie
    I did check there site earlier today and saw the sizes as you say.
     
  14. richiep

    richiep
    Z Club Member

    Iskenderian are another option. They are revamping their website though, which makes it a bit difficult to check their inventory. There is a phone number for them on the temp home page.

    http://www.iskycams.com
     
  15. Huw

    Huw
    Z Club Member

    Hi Matt

    The Zstore sell what you are after. Won't you need custom spring retainers, I thought the stock ones were only good for lash pads up to 0.160"??

    Huw
     
  16. Jimbo

    Jimbo 1978 260z in yellow

    i seem to recall an episode of wheeler dealers where they wanted to reprofile a standard cam so they sent it to a specialist that welded meat onto the cam then ground them back down.
    wasnt much cheaper than an aftermarket cam but a great option if you cant get aftermarket cams.
     
  17. SKiddell

    SKiddell Well-Known Forum User

    I'm familiar with the process but I don't know of any mainline cam profiler in the UK the does it (or at least advertise it) they tend to reprofile and rely on the user shiming or using lash pads to make up the difference.

    I've found the Nissan "core" to be suitable for regrinds direct on the lobe as its hardness grade was good from the start, the downsides of regrinds is that they are a compromise both from the profile and the fit.
     
  18. Lurch

    Lurch Active Forum User

    I'm probably a little late to the party on this but...

    If you are prepared to buy from Australia, http://www.precisionshims.com.au/products/slotted
    have all the sizes you could need.
    And with the current exchange rate, it would be reasonably cheap buying for you in the UK.

    FWIW these are the shims that LCR use for all their big capacity / big HP L6's...
     
  19. racer

    racer
    Z Club Member

    Cheers for that. I'll bookmark this one for another time.
     
  20. SKiddell

    SKiddell Well-Known Forum User

    Looks good, be interested in the pricing
     

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