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  1. #21
    Forum User stan's Avatar
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    See if theres any part numbers on the ends...remove the dizzy and drive boss to check end of exhst cam would probably be the easiest option.

    Other than checking for visual identity, you could measure the lift and duration if you have the time. You'd need a micrometer, DTI, degree wheel, and a V stand.

  2. #22
    Quote Originally Posted by stan
    Quote Originally Posted by Richardcard1974
    Quote Originally Posted by Evogone
    Quote Originally Posted by Richardcard1974
    Quote Originally Posted by Evogone
    Quote Originally Posted by Richardcard1974
    Not worth the expense in my opinion.
    Why not ? on all my previous car i have made 20-25hp just through working the head, "cnc heads/ric wood" are very good. 1.9 205 / 16v redtop etc...

    There must be gains to be had....?
    Because of the simple fact that the williams head is already well made and it cannot be ported to give major gains.


    25 bhp is fantasy island territory for a williams for headwork.

    With mild cams and headwork you will make realistically about 15 -20 bhp

    Most williams in this spec will be running about 170 - 175 bhp. A rebuild will probably give you another few bhp on top of that.

    At most youll get circa 5 bhp from porting. You can get more from changing the valves sizes, but stan will know more about this than me.
    Im sure APD have done cars with 190+hp with just headwork and cams.....

    Im sure he will comment..
    Big valve head innit.

    190 from headwork (porting) and cams is lala land dreamer town.
    Nope, big valves werent required for the level of spec.

    My williams headwork, catcams 5502225, wossner forged pistons giving 12.5:1 Cr, and a PROPERLY built engine, not just cobbled togther...but proper attention to detail on all clearances (this makes a considerable difference alone).
    This made 192/193bhp or there abouts. Which is coincidentally 5% more than the same spec without the pistons. 5% being the theoretical gain from 2.5 points increase in comp ratio.


  3. #23
    Quote Originally Posted by Evogone
    So SpongeRob shows "again" you dont really know much.......

    Thanks Stan will pop you a PM.

    Is there anyway of finding out the spec of my cams ?
    No, stan said to get 190 bhp you need modification to the pistons AND a rebuilt engine.

    CAN YOU READ SPIV BOY?

  4. #24
    Forum User stan's Avatar
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    Not totally sure where the humour is coming from their sunny jim :D

  5. #25
    Quote Originally Posted by Richardcard1974
    Quote Originally Posted by Evogone
    So SpongeRob shows "again" you dont really know much.......

    Thanks Stan will pop you a PM.

    Is there anyway of finding out the spec of my cams ?
    No, stan said to get 190 bhp you need modification to the pistons AND a rebuilt engine.

    CAN YOU READ SPIV BOY?
    LOL at you this was one engine with just porting and cams im sure with a different cam you could reach 190. Not the dreamland stuff as you suggest....

    Crusty Crab beckons....

  6. #26
    Just to recap what stan actually said, not what you imagined he said:

    My williams headwork, catcams 5502225, wossner forged pistons giving 12.5:1 Cr, and a PROPERLY built engine, not just cobbled togther...but proper attention to detail on all clearances (this makes a considerable difference alone).
    This made 192/193bhp or there abouts.


    So NO. If it takes all that to get to 192 bhp, headwork and cams will not.

    It doesnt matter how big the knot in your tie or how much hair gel is in your hair. Its NOT going to happen.

  7. #27
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    in your opinion...i think with the right head work and the right cams on the right engine you will see over 190bhp

    seen over 210 on a standard inlet so why not..

  8. #28
    Quote Originally Posted by MAXIBOY
    in your opinion...i think with the right head work and the right cams on the right engine you will see over 190bhp

    seen over 210 on a standard inlet so why not..
    Exactly....

  9. #29
    Quote Originally Posted by MAXIBOY
    but works clio ran 280bhp from cams headwork and bodies...

    so yes it is possible..just needs a very good head with cams and a very good re-map..
    They ran titanium valves. Not eactly within reach of the track day amateur is it?


    Jesus wept.

  10. #30
    Quote Originally Posted by Evogone
    Quote Originally Posted by MAXIBOY
    in your opinion...i think with the right head work and the right cams on the right engine you will see over 190bhp

    seen over 210 on a standard inlet so why not..
    Exactly....
    So why ask if you already know the answer? Or did you already know what you want to think, and are just gathering evidence to support your delusion?


 

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