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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Slow excel and 37efi
After breaking in my mb37efi. We took it out this year and only got 22mph per gps. Is that typical and what can I do with that setup for more speed.. This was empty with three people( 700 lbs)
I know I can put a cuda kit on or change to a lighter hull( mine is .125) but I feel the need for speed...
After a dog and a hunting load, it would obviously slow down more
Steve
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Mon Sep 03, 2018 1:29 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Slow excel and 37efi
Boat size?
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Mon Sep 03, 2018 1:35 pm |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
Excel 1854
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Mon Sep 03, 2018 1:43 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Slow excel and 37efi
Figure that's not too far off, but it is a couple mph low. How many rpms are you turning, is your prop worn (measure it), and what does a compression test show on each cylinder?
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Mon Sep 03, 2018 2:01 pm |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
Maybe 12 hours on it. Big blade. Have not done a compression test...what compression should it have and do I need to change plugs after break in?
It kinda struggled some last year with a full load
And that is about 4000-4100 rpm
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Mon Sep 03, 2018 2:09 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Slow excel and 37efi
Props can get worn in no time and lose some bite. Never hurts to have fresh plugs, but 12 hours isnt very many on a set. Rpms sound right, but trim level and prop wear affect that, and the ability to carry loads. Compression ought to be 150ish.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Mon Sep 03, 2018 2:55 pm |
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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: Slow excel and 37efi
When all said and done you are probably going to need a stage 1 motor to feel like it's doing its job without effort
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Mon Sep 03, 2018 9:39 pm |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
Any suggestions on a stage one kit?
BPS ?.
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Mon Sep 03, 2018 11:12 pm |
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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: Slow excel and 37efi
I wouldn't be going with the high volume places. Texasmudmotors, Bayou surface drives and a couple other good guys will take the time to do it right
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Tue Sep 04, 2018 8:08 am |
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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: Slow excel and 37efi
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Tue Sep 04, 2018 8:25 am |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 8:28 am |
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4Cody4
MMT 1000 Club
Joined: Thu Mar 31, 2011 11:21 am Posts: 2530 Location: Land of 10,000 Lakes
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Re: Slow excel and 37efi
Delta is good as well.
Sent from my iPhone using Tapatalk
_________________ "Two people in this world wear helmets, and that's dare devils and pussies." - Willie Braun
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Tue Sep 04, 2018 8:40 am |
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Glade
MMT Pro Member
Joined: Fri Apr 18, 2014 7:05 pm Posts: 150
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 2:10 pm |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
Great info...thanks for the specific shops to inquire about
What is a stable hp to expect for an increase from the 37 efi?
Don’t want it to go a season then grenade itself after 10 hours
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Tue Sep 04, 2018 4:00 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 4:32 pm |
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4Cody4
MMT 1000 Club
Joined: Thu Mar 31, 2011 11:21 am Posts: 2530 Location: Land of 10,000 Lakes
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Re: Slow excel and 37efi
I actually think that Briggs and Stratton translates to Grenade in all other languages.
Sent from my iPhone using Tapatalk
_________________ "Two people in this world wear helmets, and that's dare devils and pussies." - Willie Braun
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Tue Sep 04, 2018 5:09 pm |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 6:26 pm |
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JBsuperG
MMT Pro Member
Joined: Wed Mar 21, 2018 2:51 pm Posts: 263 Location: Michigan
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 6:36 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Slow excel and 37efi
With 36ish hours total, mind you.
Couldn't get the pic to post and was busy at work. Thanks for posting.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Tue Sep 04, 2018 7:12 pm |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Slow excel and 37efi
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Tue Sep 04, 2018 7:37 pm |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
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Wed Sep 05, 2018 10:23 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Slow excel and 37efi
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Thu Sep 06, 2018 7:05 am |
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Okiedukk
MMT Member
Joined: Wed Feb 08, 2017 11:17 pm Posts: 9
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Re: Slow excel and 37efi
Maxxiis, looked you folks up...might call and see about options
Can you recommend my next steps to get this excel moving ...heads, tuner etc??
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Thu Sep 06, 2018 3:37 pm |
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