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 prop question for 18' ranger w/175 mariner
#7674754
06/21/12 08:09 PM
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Joined: Feb 2010
Posts: 93
75670
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2010
Posts: 93 |
I have a 93 Ranger 481v with a 175 mariner efi, with a 25p laser prop. Currently running 6100 rpm's wide open, trimmed out. Redline from 6000-7000 rpm's. Is it safe to run in the redline for an extended period of time? Next question is how much more beneficial would it be if I got a 25p Tempest. Gps recently quit working, so I have no idea how fast I'm going at full throttle. Any info greatly appreciated.
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Re: prop question for 18' ranger w/175 mariner
[Re: 75670]
#7677402
06/22/12 02:05 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
that EFI is max at 6200
i'd prefer to keep it at 5900-6000
and no it won't hurt to run it at 6100 at all.
with that boat a worked laser II is good, but the tempest may be a lil faster on top, but won't turn but about 5600-5700 rpms, unless you can run the motor alot higher.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: prop question for 18' ranger w/175 mariner
[Re: 75670]
#7681972
06/23/12 04:01 PM
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Joined: Apr 2007
Posts: 2,165
Team Brown Stripe
Extreme Angler
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Extreme Angler
Joined: Apr 2007
Posts: 2,165 |
My boat a 482V ran like carp with a Laser Prop. Put a 10" Jackplate on it and run a Tempest or Fury and HANG ON! 
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Re: prop question for 18' ranger w/175 mariner
[Re: 75670]
#7697671
06/27/12 05:54 PM
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Joined: Apr 2004
Posts: 14,760
Stump jumper
TFF Guru
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TFF Guru
Joined: Apr 2004
Posts: 14,760 |
My 375V - Merc 175 runs best with 23P Tempest Plus. Tempest is a great prop if you justify spending the money. If you do not have a spare then I would get a Tempest and keep the Laser for a back up.
2200 Bay Champ/200 Mercury Optimax
2017 Tundra TSS 4x4 Crewmax 5.7L
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