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camming and porting

Discussion in 'XJ Modifications' started by blackjack550, Mar 6, 2008.

  1. blackjack550

    blackjack550 Member

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    Location:
    san pedro california
    any ideas about where i could get a higher lift cam with shims....
    and what about the idea of fabricating my own cold air intake manifolds?
    and does anyone know what happens to anyones bike if they had 3 angled their heads and valves?
     
    blackjack550, Mar 6, 2008
    #1
  2. cruzerjd

    cruzerjd Member

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    Location:
    Eugene, Oregon
    Megacycle has a good grind for the Xj550. Uses stock pistons and springs. Has an increase of .042 intake and .071 exhaust and an increase of 11 degrees intake an 16 degrees exhaust on duration. Total specs are .350 lift and 244 degrees duration on a 107 degree lobe center. Will run about $388 on customer core regrind. As for porrting, the stock porting is pretty good, but a cometent shop could improve on it. It might cost a bit for a small gain in performance. cruzerjd
     
    cruzerjd, Mar 6, 2008
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