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Thread: hows my lapping?

  
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    welsh-andy's Avatar
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    Question hows my lapping?

    started to lap the valves now, put hardly any pressure on stick. but did a short vid,

    is this ok, do coarse,then after no noise move onto fine, and do same, ok??





    4 done

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    jalfrezigazee's Avatar
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    make sure absolutely no grinding paste gets onto the stems or else you are enlarging the hole which is a BAD thing to do. 5 mins per valve with fine paste only is the rule of thumb - if you use the coarse stuff you can put ridges in that are really hard to get out. Then to test degrease and put 4 pencil marks 90 deg apart radially. A quick dry lap then see how the pencil mark has spread. It should be an even spread and not peaky
    Be Happy


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    Quote Originally Posted by jalfrezigazee View Post
    make sure absolutely no grinding paste gets onto the stems or else you are enlarging the hole which is a BAD thing to do. 5 mins per valve with fine paste only is the rule of thumb - if you use the coarse stuff you can put ridges in that are really hard to get out. Then to test degrease and put 4 pencil marks 90 deg apart radially. A quick dry lap then see how the pencil mark has spread. It should be an even spread and not peaky
    cheers, did make sure was only on lip, as didnt want(enlarge as u said)

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    mattcoupturbo's Avatar
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    What i find more worrying is the ready steady cook action going on in the background

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    Quote Originally Posted by mattcoupturbo View Post
    What i find more worrying is the ready steady cook action going on in the background

    im busted, a closet fan
    i wont try 2 deny it as u wont believe me anyway

    is a shame my financial woes have spirialed and will have to sell head as need cash for PV and fmic, as bank manager cut me off

    i spent fecking days on this,well gutted

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    Quote Originally Posted by welsh-andy View Post

    is a shame my financial woes have spirialed and will have to sell head as need cash for PV and fmic, as bank manager cut me off

    i spent fecking days on this,well gutted
    this guys looking for one http://www.astraownersclub.com/vb/sh...d.php?t=148346

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    Quote Originally Posted by leeeeshad View Post
    normally would sell it on here(forums), but need 2 get as much as poss,due to tw*t above(namely bank manager) so have no choice but 2 egay it

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    what exactly were you doing andy?

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    Quote Originally Posted by f4af100uk View Post
    what exactly were you doing andy?
    nothing tbh m8, was just learning and experience, plus head was a lot newer, so thought would clean it up and put it on mine, then clean mine up and sell that one.
    there was a mention of porting/polishing but funds wouldnt allow that.

    so really learning tbh, enjoyed it, but eck hard work

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    I would have had it off you if you hadn't messed it up
    Be Happy


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