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| Prodrive Speed. Needing help! http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=72516 |
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| Author: | Bigen [ Mon May 28, 2018 4:28 pm ] |
| Post subject: | 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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| Author: | Quack N Stack [ Tue May 29, 2018 6:06 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
What size boat? |
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| Author: | Russ [ Tue May 29, 2018 6:39 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
Looks like an 1854, dude. Lol #CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor |
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| Author: | Russ [ Tue May 29, 2018 6:43 pm ] |
| Post subject: | 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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| Author: | Quack N Stack [ Tue May 29, 2018 8:14 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | Will C [ Tue May 29, 2018 8:22 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
I agreed. Sounds about right, you gonna need some more power man |
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| Author: | bluesky2012 [ Tue May 29, 2018 8:28 pm ] |
| Post subject: | 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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| Author: | Bigen [ Tue May 29, 2018 8:59 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | 50fps [ Sat Jun 02, 2018 10:24 am ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | Russ [ Sat Jun 02, 2018 11:23 am ] |
| Post subject: | 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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| Author: | 50fps [ Sat Jun 02, 2018 12:36 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
The EVT guys really liked them. Something about the square bore/stroke philosophy. |
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| Author: | Russ [ Sat Jun 02, 2018 3:08 pm ] |
| Post subject: | 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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| Author: | bayouboy [ Sat Jun 02, 2018 9:04 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
I would try hydro foils. |
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| Author: | Exbellicus [ Sat Jun 02, 2018 11:47 pm ] |
| Post subject: | 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. |
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| Author: | Bigen [ Sun Jun 03, 2018 12:28 am ] |
| Post subject: | 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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| Author: | bayouboy [ Sun Jun 03, 2018 8:48 am ] |
| Post subject: | 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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| Author: | Russ [ Sun Jun 03, 2018 9:16 am ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
I might have a spare crank, but no rods. #CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor |
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| Author: | Bigen [ Sun Jun 03, 2018 9:42 pm ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | brycecheramie [ Mon Jun 04, 2018 7:47 am ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | cb5331 [ Sun Jul 22, 2018 10:07 am ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | MaXXis85 [ Mon Jul 23, 2018 5:10 am ] |
| Post subject: | Re: Prodrive Speed. Needing help! |
| Author: | Russ [ Mon Jul 23, 2018 8:37 am ] |
| Post subject: | 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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