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  1. #16
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    Edgewater,B.C. CANADA
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    Quote Originally Posted by FastLaser View Post
    "Do these motors have factory velocity stacks? If so is it worth trying to track some down?"

    2.4 MOD VP motors came with velocity stacks. I have same motor. I removed the stacks with no ill effects.
    Stacks ain't going to get ya 1000rpm they are not the issue.


    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"

  2. #17
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    Aug 2011
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    Ontario
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    The engine height is as high as it can go while keeping adequate water pressure with the 2 Hole CLE. I find the factory water pickup holes quite high as they are just above the bullet compared to my setup with the bob's cone where they are below. But obviously people run fast with the stock CLE so this isn't the issue. I would guess he is about even with the pad. We'll see what happens today with the 24.
    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

  3. #18
    Join Date
    Feb 2013
    Location
    Allenford, Ont.
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    I had the STV out today with the 24 Chopper on it and it pulled like a freight train from idle to about 6500 RPM and then struggled to get up to 7000 RPM and just barely made it to 7200 RPM once. I talked to my buddy Fullthrottleguy about it and he suggested checking the spark plugs quickly after running it hard, so I'll give that a try in the next few days or so. Where starting to wonder if it's a bad plug or a head gasket leak maybe? Anyone with a Bridgeport experience these symptoms?

  4. #19
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    What about the Jets? It occurred to me that this Mod-VP motor runs lower compression then it was initially jetted for because its heads have been swapped to regular Bridgeport ones; it could be running a bit fat. What jets would a regular '86 Bridgeport have?
    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

  5. #20
    Join Date
    Aug 2004
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    Canada
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    Quote Originally Posted by Fullthrottleguy View Post
    What about the Jets? It occurred to me that this Mod-VP motor runs lower compression then it was initially jetted for because its heads have been swapped to regular Bridgeport ones; it could be running a bit fat. What jets would a regular '86 Bridgeport have?
    My factory original MOD VP motor had 96 & 94 main jets. I replaced the 2 piece 2.0L heads with standard one piece heads so lowering compression from 145# to 120#. The motor was dialed in with 88 & 86 jets.

  6. #21
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    Quote Originally Posted by FastLaser View Post
    My factory original MOD VP motor had 96 & 94 main jets. I replaced the 2 piece 2.0L heads with standard one piece heads so lowering compression from 145# to 120#. The motor was dialed in with 88 & 86 jets.
    Thanks! That was exactly what I was looking for. I can't help but notice your name "fastlaser"; do you have a Bridgeport on a laser LTV? If so how does it run?
    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

  7. #22
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    Quote Originally Posted by Fullthrottleguy View Post
    Thanks! That was exactly what I was looking for. I can't help but notice your name "fastlaser"; do you have a Bridgeport on a laser LTV? If so how does it run?
    Yes, a 1986 MOD VP motor on a 1987 LTV. Came with a stock 28" big ear chopper. I added a jack plate with only 2.5" set back. Cables are too short to allow anything further. Have not bothered to replace them yet. Boat ran okay but I found it trim sensitive because of the bow lift provided by the prop. It ran mid eighties with this setup. Recently picked up a 28" small ear chopper because I tried a 26" small ear and found the boat had much better attitude. Raised motor so bullet level with pad. Have not checked speed lately, but suspect similar results as motor turns 6700 rpm with this set up. All in all, a nice handling boat.

  8. #23
    Join Date
    Sep 2002
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    Loch Erin, Irish Hills Area, SE Michigan
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    FastLaser... Your boat sounds familiar... Are you the super-nice older guy who hangs out with Michigan Hot Boats?
    '89 Hydrostream Vegas XT, '90 Merc 2.4 Bridgeport PCU EFI
    My YouTube videos________My Flickr photo gallery
    http://www.facebook.com/profile.php?id=1706097519

  9. #24
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    Quote Originally Posted by pyro View Post
    FastLaser... Your boat sounds familiar... Are you the super-nice older guy who hangs out with Michigan Hot Boats?
    Yes I am "the SUPER NICE OLDER GUY"

  10. #25
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    It's possible that the 2.4 MOD-VP won't turn harder than high 6's without the high-compression heads and high octane fuel.
    '89 Hydrostream Vegas XT, '90 Merc 2.4 Bridgeport PCU EFI
    My YouTube videos________My Flickr photo gallery
    http://www.facebook.com/profile.php?id=1706097519

  11. #26
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    Quote Originally Posted by pyro View Post
    It's possible that the 2.4 MOD-VP won't turn harder than high 6's without the high-compression heads and high octane fuel.
    I'm surprised these motors can't pull +7500 RPM on these boats too. Mcmopar has .092 and .056 jets so perhaps it is jetted too rich for these heads which could explain a bit of the lack of RPM.
    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

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