How to tell difference between auto and manual cams ?

Discussion in 'Technical' started by kakaboy, Apr 2, 2012.

  1. kakaboy

    kakaboy New Member

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    local noob calling for some advice .... again :D

    Ok I have two engines side by side one a manual and the other an auto . Both TT's . I have looked at the intake cams in both engines and cant seem to see an obvious difference :confused:

    Do the numbers on the cam actually mean anything or designate what cam it is ?

    The lobes on both seem the same also ? I havent looked at exhaust cams yet .

    So fire away fella's ... you know you want to :D
     
  2. Chrispy

    Chrispy Pretentious Upstart

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    There is a coloured band on the cams. This tells you what they are. I can't remember the colours, but it has been posted up before.
     
  3. a2zed

    a2zed Guest

  4. kakaboy

    kakaboy New Member

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    Thanks fella's . I cant see any bands and to the naked eye its too hard to tell . Ill find something to measure it with .

    Ill give you a call in the morning Eric and I have those turbs ready to send to you . Just wanted to nut a couple things out with you .
     
  5. a2zed

    a2zed Guest

    No problems, anytime after 9.
     
  6. Tony

    Tony Member

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    Cam Markings

    Each cam will be marked with either RI,RE,LI,LE Right Inlet, Right Exhaust Ect. You may have to run over the markings with a wire brush
     
  7. kakaboy

    kakaboy New Member

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    Thanks for that . But more concerned with id'ing the manual from the auto cams ;) Its no biggy just tossing the idea of changing them over to suit the manual turbo's .
     
  8. MickW

    MickW Carntry member...

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    Eric, a clarification please -
    On an auto engine, should there be yellow bands on the intake cams and greenyblue bands on the exhaust cams?
    As in this pic -

    [​IMG]


    Whereas the manual engine will have greenyblue bands on both intake and exhaust?
    As in this pic, barely discernable on the 2 LHS camshafts uppermost in the pic -

    [​IMG]

    Because the exhaust cams are the same part for auto and manual, wouldn't you end up with both colours on an auto engine?

    I'm only asking for the benefit of future searchers :)
     
  9. a2zed

    a2zed Guest

    That is correct. All Na cams and all exhaust cams are green. Manual tt exhaust cams are also green as all exhaust cams are the same.

    S1 TT auto intake cams are yellow.

    S2 TT and NA intake cams are red.
     
  10. kakaboy

    kakaboy New Member

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    Can this be removed when cleaned up by engineers ?
     
  11. Chrispy

    Chrispy Pretentious Upstart

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    I'm an engineer and I'm terrible at cleaning things :p


    I guess if they use a horrible enough cleaning agent it might come off, it is often very faint and stained from the oil containments
     
  12. MickW

    MickW Carntry member...

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    I went through this, the yellow auto bands are easy to spot but the greenyblue manual bands are harder to see.

    Look at them in daylight. If still not sure, wash them with prep wash or turps etc then let them dry and look again.

    ( be sure to get some oil back onto them straight afterwards )
     
  13. kakaboy

    kakaboy New Member

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    Thanks Guys will give it a clean and have another look in daylight .
     

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