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Thread: Wh 20 jets

  1. #1
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    Wh 20 jets

    What size jets did a set of wh 20 carbs come with
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

  2. #2
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    .072 mains except cyl 2 it had .074, .046 idle, no vent jets.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  3. #3
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    Thank u. And if I remember correctly ugo up 8 jet sizes if u are cross drilling
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

  4. #4
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    Quote Originally Posted by bigbluechevy454 View Post
    Thank u. And if I remember correctly ugo up 8 jet sizes if u are cross drilling
    Not sure on the cross drill thing.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  5. #5
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    I think there was a service bulletin that upped the mains to 80 & 82 (cyl 2 & 5).
    Go Time
    2003XS GS 225 Promax/ 260 / 280
    26 Regulator twin 250 EFI

  6. #6
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    Quote Originally Posted by Go Time View Post
    I think there was a service bulletin that upped the mains to 80 & 82 (cyl 2 & 5).
    You are correct,Chris

  7. #7
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    Where are people buying jets? I have a set of WH's that came with no jets at all.
    If I don't ask any questions, I'll never learn anything.

  8. #8
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    Merc dealer. I wish there was a "jet kit " availible like for a Holley carb but if there is I've never found one.

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