Recent content by uwish

  1. U

    replacing manifolds on 5.7

    Hi I have a 1990 5.7 alpha 1 set up and the exhaust manifolds have failed so I'm repairing the engine and need to replace manifolds, can I use the newer dry joint style? do they bolt straight on with no modifications? is there any thing tips/tricks I need to look out for when buying manifolds...
  2. U

    wanting more power out of 4.3 vortec v6

    hi i have a 90hr from new 4.3 vortec v6 with thunderbolt ignition and it has a merc 2 barrel carb. the year is 1999 of the motor. the motor goes great and is in a hamilton jet boat driving a hamilton 212 jet unit. i would like sum more power,the boat currently does 80kms and @ w.o.t and is...
  3. U

    mercuiser running on help

    hi after my previous post about carb adjustments i have found the problem i had (thanks to those who helped) but my motor which is a 4.3lx v6 with 2 bbl carb runs on quite bad now after playing with the carb. what i want to do is get it better than it was even b4 i had the problem 5sec or...
  4. U

    mercruiser 4.3 2bbl carb adjusment

    i have a 4.3 lx v6 motor with the merc 2bbl carb, what i want to know is for the rich/lean idle adjustment screw on carb which way is rich or lean? i.e i screw in to make richer or screw out? thanks
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