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Thread: Tuning a stock 3k

  1. #1
    Forum Member
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    Default Tuning a stock 3k

    Could someone please tell me,

    * At what degree btdc should a stock 3k engine fire number one cylinder?
    * What distance is the the points gap?
    * What are the clearences for intake and exhaust under rockers.
    * Any advice on stock carby. To get a reasonable idle speed and smooth running.

  2. #2
    Junior Member Grease Monkey 3BarSuperstar's Avatar
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    Default Re: Tuning a stock 3k

    Timing at a guess would be 10 degrees before and points gap you could probably get away with 16 thou. Have you tried looking around the net?

  3. #3
    Junior Member Backyard Mechanic benjamin's Avatar
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    Default Re: Tuning a stock 3k

    I'll be home in about 10 days (April 1st) and I am pretty sure that I have a tuning manual for the old corolla's, and should have the tune up specs. If you haven't found out by then send me a PM and I will look it up for you.

  4. #4
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: Tuning a stock 3k

    Quote Originally Posted by celica gt-t
    Could someone please tell me,

    * At what degree btdc should a stock 3k engine fire number one cylinder?
    * What distance is the the points gap?
    * What are the clearences for intake and exhaust under rockers.
    * Any advice on stock carby. To get a reasonable idle speed and smooth running.
    10deg BTDC, but 10-15 should be ok unless you are using low octane unleaded.
    points gap.. 0.2-0.4mm.. just set for 0.3mm
    rockers, 0.2-0.3mm (maybe 0.2-0.25 for intake and 0.25-0.3 for exhaust)
    i usualy run them a bit tighterm but it depends on your cam base circle etc.. aim for 0.2-0.25mm?

    umm..clean carby helps. set the float level.. after that, it is just fiddling wiht the idle mixture and idle speed..

    new/clean spark plugs help. for stock, heat range 5 (in NGK) is good.
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  5. #5
    Mad****** Grease Monkey FASTFOO's Avatar
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    Default Re: Tuning a stock 3k

    What OC said but set the timing to 15' BTDC

    Orig factory said 7 or 8 and was then revised and memos sent to all dealers stating 15'

    they go much better there!!

    Regards
    MATT.

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