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  1. Replies
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    Tell us about the exhaust you will be using. ...

    Tell us about the exhaust you will be using.

    Jeff
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    L31 which is a sbc Vortec motor '96-'00. Mercury...

    L31 which is a sbc Vortec motor '96-'00. Mercury used the same unit in some of their engines.
    It has the right output signature to use it for a sync source.

    Jeff
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    You'll need to add a crank trigger and use an L31...

    You'll need to add a crank trigger and use an L31 distrubutor for a cam sensor. They make a cap that replaces the normal spark plug style cap. You'll only be using it for a cam trigger.

    ...
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    Which engine do you have? I would think a call...

    Which engine do you have?
    I would think a call to these people would answer your questions,

    https://www.obd2allinone.com/mefitune.asp


    Jeff
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    A MEFI4b will run an LS2. I believe it's all...

    A MEFI4b will run an LS2. I believe it's all about getting the right firmware installed.

    UMI racing sold the ecu package for this many years ago. It was then sold off to MSD.
    Not sure who is...
  6. Thread: 502 to LS3

    by HallJ
    Replies
    249
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    79,049

    You're learning! Nothing wrong with that. Jeff

    You're learning! Nothing wrong with that.

    Jeff
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    Stainless Marine exhaust is $2000 LS would do...

    Stainless Marine exhaust is $2000
    LS would do nicely in that boat.
    Phil did a 383, does anyone know how much power it made?

    Jeff
  8. Thread: 502 to LS3

    by HallJ
    Replies
    249
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    79,049

    Do you really need the baro sensor? Could you...

    Do you really need the baro sensor?
    Could you put the oil pressure on that channel instead?

    Jeff
  9. Thread: 502 to LS3

    by HallJ
    Replies
    249
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    79,049

    One of the things I like about the megasquirt is...

    One of the things I like about the megasquirt is the documentation, it's extremely thorough!!!
    Are you aware that the knock sensor doesn't directly interface to the ecu?

    Jeff
  10. Thread: 502 to LS3

    by HallJ
    Replies
    249
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    79,049

    You buy a license per ECU. Did you look at EFI...

    You buy a license per ECU. Did you look at EFI live? The knock control algorithim in the GM ECU would be desirable for a supercharged high compression engine like the LS3. Did you change out the...
  11. Thread: 502 to LS3

    by HallJ
    Replies
    249
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    79,049

    What has steered you away from the GM ECU? Jeff

    What has steered you away from the GM ECU?

    Jeff
  12. Thread: Trim tabs

    by HallJ
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    1,961

    From my experience doing a similar change, I...

    From my experience doing a similar change,
    I would recommend it. It takes much less tab angle to hold the bow down or level the boat.
    Much more efficient. You can really eat up the waves.

    Jeff
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    I have a 1.5" thick steel bar I use as a drill...

    I have a 1.5" thick steel bar I use as a drill guide. It has a 17/32 hole in it to guide the drill. I also machined some pieces of threaded rod to a point. I screwed these into the standoff box...
  14. Thread: Operating Temp.

    by HallJ
    Replies
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    4,101

    Use your DVM to measure the resistance between...

    Use your DVM to measure the resistance between the main engine ground and the body of the sensor where the hex is.
    If it is more than two or three ohms, add the ground wire and measure again.
    ...
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    What year is your Aquasport? Jeff

    What year is your Aquasport?

    Jeff
  16. Thread: Operating Temp.

    by HallJ
    Replies
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    4,101

    Try adding a ground wire to the sending unit...

    Try adding a ground wire to the sending unit body. Ty rap, safety wire or small hose clamp to hold it there.

    Jeff
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    This was the Port side. The Stbd side was worse....

    This was the Port side. The Stbd side was worse.

    Jeff
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    Matt, What year is your boat? An 1/8" is too...

    Matt,

    What year is your boat?
    An 1/8" is too much to leave alone.
    I would use 3M marine filler. It is Vinyl Ester and glass spheres. This equates to low moisture absorption potential which is...
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    First order of business is to straighten the...

    First order of business is to straighten the bottom of the boat out. Grab a straight edge and tell us what you find.

    Jeff
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    Get bent!!!! Check it out...... ...

    Get bent!!!! Check it out......

    https://youtube.com/watch?v=eibj5PS4wJ8
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    Kenny couldn't get the bow lift but I had the...

    Kenny couldn't get the bow lift but I had the opposite problem. Out of anything I tried, the 17.75x23 4 blade Rolla helped the most. The added length of the rocker plates cured the porpoise. I do not...
  22. Thread: Solas LH prop

    by HallJ
    Replies
    5
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    932

    You don't always need to prop for top speed. ...

    You don't always need to prop for top speed.

    Jeff
  23. Thread: Solas LH prop

    by HallJ
    Replies
    5
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    932

    Solas LH prop

    Not mine.

    http://m.ebay.com/itm/VOLVO-BOAT-PROP-SOLAS-MATCH-stainless-steel-8842-156-23-new-/112142458979?nav=SEARCH
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    George, My Minx was the same when I measured...

    George,

    My Minx was the same when I measured it. Not a big surprise I guess.

    Jeff
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    If you want more speed, raise the drive up 2". ...

    If you want more speed, raise the drive up 2".

    Jeff
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