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It is currently Wed Apr 24, 2024 11:51 am
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[ 11 posts ] |
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Brokeknee
MMT Pro Member
Joined: Thu Nov 08, 2012 2:32 pm Posts: 261
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Speeds
So over the years speeds have steadily gone up. Originally if you had a 35hp stage 2, 32-33 mph were good speeds. Now you see stock 40hp running that and a stage 2 running 37-38. What is the difference? Have the builds become better? Heads worked differently? A 35, 37, and 40 block are in theory all the same with a stage 2 except for one being carb and the other fuel injection. Just curious what yall opinions are.
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Wed Apr 07, 2021 7:29 pm |
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BlueShamu
MMT Elite Member
Joined: Mon Feb 06, 2012 6:13 pm Posts: 5605 Location: D'town, LA
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Re: Speeds
Speed is over rated.
Will it get out of its own way in the thick stuff?
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Wed Apr 07, 2021 8:23 pm |
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Brokeknee
MMT Pro Member
Joined: Thu Nov 08, 2012 2:32 pm Posts: 261
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Re: Speeds
Speed is over rated to some and everything to other's.
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Wed Apr 07, 2021 9:03 pm |
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kib876
MMT Addict
Joined: Tue Dec 15, 2009 8:16 am Posts: 612 Location: Orange, Texas
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Re: Speeds
You are right, I can remember when low to mid 30’s was “fast”. Now the stock motors are running that. I’ve modded 2 motors in the past, both of which ran about the same speeds as my stock 37 GTR runs empty. However, the mods were very nice when I loaded the boats down and didn’t drop very many mph at all.
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Thu Apr 08, 2021 3:00 am |
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Brokeknee
MMT Pro Member
Joined: Thu Nov 08, 2012 2:32 pm Posts: 261
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Re: Speeds
The bigger cam and better heads help tremendously with load carrying. In stock form the 40s are impressive from the old 35/36 models, but I don't understand why they are so much quicker when built. I guess the EFI makes that much of a difference.
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Thu Apr 08, 2021 6:09 am |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Speeds
I think a lot of the stock 40 speeds are inflated. I’ve run next to one. Good motor, but definitely not a mid 30s rig by any stretch. 30, sure, not much above it though.
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Thu Apr 08, 2021 6:38 pm |
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BlueShamu
MMT Elite Member
Joined: Mon Feb 06, 2012 6:13 pm Posts: 5605 Location: D'town, LA
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Re: Speeds
All speeds posted on the www for mud motors are inflated...tail winds, tail currents, shallow water, light load....all 4 of those in my favor, I just gained at least 3.5 MPH.
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Fri Apr 09, 2021 7:00 am |
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Brokeknee
MMT Pro Member
Joined: Thu Nov 08, 2012 2:32 pm Posts: 261
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Re: Speeds
Speeds are definitely inflated, but you can consistently see a 40hp run 31-32mph. Which like stated above use to be borderline "fast".
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Fri Apr 09, 2021 8:45 am |
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DmaxHunter
MMT 1000 Club
Joined: Wed Jan 18, 2012 7:21 pm Posts: 2207 Location: North Alabama
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Re: Speeds
I put a new 40 on a 10 model Gator series 18x54, with a decent hook at the worst possible spot, unloaded I ran 29 to 30 mph. I have sense taken the hook out, but am now running a Hammer, which nets me 28ish loaded or unloaded.
yes the stock 40 is better than a stock 35 yes, will it out run a modded 35, that depends on so many factors, rig, load, prop.....
BlueSky ran next to me with his 17x54 3/16 bottom, heads, cam, and exhaust and he did not have an issue keeping up, we are both running hammer props, so speed isnt our main priority.
Needless to say 40 is nice, but I will take the ability to toat a load over speed. The 40 has been a good motor so far.
_________________ 2014 PRODIGY 1754 (#19) 2014 5500 BAMF HDR RETRO SOLD
2010 Gator Tail Gator Series 18x54 pushed by a 2020 40GTRXD
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Fri Apr 09, 2021 10:13 am |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: Speeds
yes over the years builders have dialed in there combos. now a good stg2 makes what the badass full builds used to make
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Fri Apr 09, 2021 12:49 pm |
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dpd
MMT Addict
Joined: Thu May 07, 2009 10:25 am Posts: 714 Location: Thibodaux, LA
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Re: Speeds
I have a stock 40 efi on a 16x48 hull and never really took a good look at my speeds on the new 40.
Saturday I went fishing and decided to look. Used the speedbox on my cell phone and when I got to some open water where I could pay attention I was flipping back and forth between 29 & 30 mph.
That is it. I had some gear but I am not going to claim that I was loaded like a barge because I wasn't.
IF I had an 18ft hull maybe it would be different; faster; maybe not.
I am keeping the motor stock because I just don't feel like fooling with mods and props anymore.
I do care what my motor does when I get in the soup and gumbo and lettuce and so far I am pleased.
I think I would benefit most by playing with the skeg on my GEN II lower unit.
_________________ 16 x 48 Blanchard Bateau / 40 PD FPR Eat,Sleep, Fish, Hunt. Repeat.
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Thu Apr 15, 2021 7:27 am |
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