42 Poker Run rerig
#503
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Joined: Jan 2004
Posts: 5,325
Likes: 112
From: Northern NY
#507
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Joined: Mar 2011
Posts: 943
Likes: 277
From: So. Burl. VT.
Thanks for the kind compliments. We really love the boat also, definitely my favorite one I've owned. Really love the way it runs, it will cruise endlessly at 105. Not to bad for a 525 efi based engines. We are working on an upgrade for next winter. We would like to go play with the outboard cats. Dustin Whipple did the tune on these engines, and talking to him I believe with the new gen 5, 3.8 liter blowers we can easily achieve what we need. I want to retain all the mercury smartcraft systems, and this setup will allow that. It would be interesting to hear from anyone who is using this new system.
#509
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Joined: Sep 2013
Posts: 2,320
Likes: 1,040
From: Wisconsin
One of our concerns this past summer was low charging voltage. Going over video that we took we hardly saw above 12.5 volts, even at higher rpm. The boat was outfitted with a battery isolator from the factory. Both alternators were wired directly into the isolator them from there off to the 3 batteries. Doing some research I found out that these isolators rob between 1 to 1.5 volts. So we did away with the isolator and wired the alternator up direct. Used a smart solenoid to separate batteries.
results are 13.8 to 14.1 volts to batteries.
The smartcraft did throw a low voltage code a few times. So this should solve any issues.
results are 13.8 to 14.1 volts to batteries.
The smartcraft did throw a low voltage code a few times. So this should solve any issues.











.............pretty sure bencini231 ( Chris ) is building a pair of those new 3.8 Whps