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Bigen
MMT Member
Joined: Mon May 28, 2018 4:17 pm Posts: 31
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Prodrive Speed. Needing help!
New to the Forum. I recently purchased a 1854 Prodrive rig not running. The boat is in good shape. No hooks. Since then, I have gotten the engine running. My motor is a 2006 gen1 32hp. I getting 4100-4200 rpm out of the water. 1300 idle. With myself (320#) and friend 180# II saw 22mph@3750. With 950# of people this weekend, I would only plow at 11-14mph. Are these numbers correct?
I have been thinking about doing a few mods to this engine or if it would just be a waste. I might look for a 40efi to replace my 32hp.
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Mon May 28, 2018 4:28 pm |
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Quack N Stack
MMT 1000 Club
Joined: Sat Dec 15, 2012 9:43 pm Posts: 2225 Location: Baytown, Tejas
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Re: Prodrive Speed. Needing help!
What size boat?
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Tue May 29, 2018 6:06 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: Prodrive Speed. Needing help!
Looks like an 1854, dude. Lol
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Tue May 29, 2018 6:39 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: Prodrive Speed. Needing help!
Yeah, those numbers don't seem too far off when you consider it's probably got some valve leakage. A new powerhead (Briggs or kawasaki), mod that one to turn it into a 35 or more, or a used powerhead that's already modded are your options. I wouldn't do just a valve job on that one unless you aren't looking for much more than you're getting now.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Tue May 29, 2018 6:43 pm |
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Quack N Stack
MMT 1000 Club
Joined: Sat Dec 15, 2012 9:43 pm Posts: 2225 Location: Baytown, Tejas
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Re: Prodrive Speed. Needing help!
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Tue May 29, 2018 8:14 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: Prodrive Speed. Needing help!
I agreed. Sounds about right, you gonna need some more power man
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Tue May 29, 2018 8:22 pm |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Prodrive Speed. Needing help!
I have the same sized boat with a stock (for the week) GTR35 and those are essentially the exact same numbers. You're driving a lawnmower engine on a big boat with 4 ppl after all.
Sent from my iPhone using Tapatalk Pro
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Tue May 29, 2018 8:28 pm |
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Bigen
MMT Member
Joined: Mon May 28, 2018 4:17 pm Posts: 31
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Re: Prodrive Speed. Needing help!
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Tue May 29, 2018 8:59 pm |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm Posts: 2377 Location: West Coast Wisconsin
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Re: Prodrive Speed. Needing help!
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Sat Jun 02, 2018 10:24 am |
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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: Prodrive Speed. Needing help!
I don't doubt it, but it loses top end because of the shorter stroke, does it not?
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Sat Jun 02, 2018 11:23 am |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm Posts: 2377 Location: West Coast Wisconsin
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Re: Prodrive Speed. Needing help!
The EVT guys really liked them. Something about the square bore/stroke philosophy.
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Sat Jun 02, 2018 12:36 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: Prodrive Speed. Needing help!
Better torque curve in the rpms we need the torque, spins up faster, etc, but the negative is a tad less power on top. Guess with enough added compression you can make up for most of that.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Sat Jun 02, 2018 3:08 pm |
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bayouboy
MMT Elite Member
Joined: Tue Jan 13, 2009 6:08 pm Posts: 5376 Location: Venice, La
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Re: Prodrive Speed. Needing help!
I would try hydro foils.
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Sat Jun 02, 2018 9:04 pm |
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Exbellicus
MMT Pro Member
Joined: Sat Oct 15, 2016 4:59 pm Posts: 126
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Re: Prodrive Speed. Needing help!
I have a '16 1848 w/ a stock 37efi. Here are my numbers in smooth water.
Solo with some fishing poles 27-28 Solo with duck gear 26 2-up with duck gear 23-24 3-up with duck gear 18 6-up with dog and jugline gear 16
Also consider where your weight is can significantly effect speed. There's no one answer for all boats, you'll have to experiment and see what your setup likes best.
_________________ 2016 Prodrive X 1848 37efi
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Sat Jun 02, 2018 11:47 pm |
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Bigen
MMT Member
Joined: Mon May 28, 2018 4:17 pm Posts: 31
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Re: Prodrive Speed. Needing help!
Thank you guys for the help. This has been a very helpful site.
I have a 42mm mikuni off of a 4wheeler at work. I’m thinking about trying to find all of the parts to add it along with a used performance exhaust. I figure a shop locally will shave the heads and I can port/polish them to the intake myself. I am trying to keep from sinking a whole lot of money into such an old motor. Can I shim the factory valves or should I try finding new ones as well?
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Sun Jun 03, 2018 12:28 am |
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bayouboy
MMT Elite Member
Joined: Tue Jan 13, 2009 6:08 pm Posts: 5376 Location: Venice, La
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Re: Prodrive Speed. Needing help!
With a little searching I'm sure you could find a 36 crank and c-rods for pennies on the dollar. Worth the time imo.
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Sun Jun 03, 2018 8:48 am |
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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: Prodrive Speed. Needing help!
I might have a spare crank, but no rods.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Sun Jun 03, 2018 9:16 am |
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Bigen
MMT Member
Joined: Mon May 28, 2018 4:17 pm Posts: 31
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Re: Prodrive Speed. Needing help!
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Sun Jun 03, 2018 9:42 pm |
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brycecheramie
MMT 1000 Club
Joined: Thu Nov 04, 2010 7:38 am Posts: 4323 Location: Cut Off, La.
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Re: Prodrive Speed. Needing help!
_________________ Refurbishing a Prodrive
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Mon Jun 04, 2018 7:47 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: Prodrive Speed. Needing help!
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Sun Jul 22, 2018 10:07 am |
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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: Prodrive Speed. Needing help!
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Mon Jul 23, 2018 5:10 am |
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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: Prodrive Speed. Needing help!
If he decides to go that route, I've got a block and crank available. I think hes gonna go heads and fuel right now.
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Mon Jul 23, 2018 8:37 am |
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