Medium Swamp Runner Kit (8-16hp)
Our Medium Swamp Runner Kit is designed for 8-16hp engines and is perfect for medium size jon boats up to 14 feet.
Kit Weight: 57 lbs.
The Predator 420 (13hp) & Honda GX390 are the most used engines with this kit. Please use the tab below for more compatibility details.
Our Medium Swamp Runner Kit includes every part needed to build a longtail motor except for the engine.
Each kit includes:
- Coupler Assembly
- Tethered Kill Switch Assembly
- Tiller Handle
- Duckbill Throttle Assembly & Grip
- 85" Shaft Assembly or 100" Shaft Assembly
- Engine Base Mounting Bracket
- Transom Bracket
- All hardware required for assembly.
- Comes standard with (2) Aluminum Surface Piercing Propellers
- Owner's Manual for assembly instructions and other information
You can view performance stats submitted by verified Medium Swamp Runner Kit owners at the link below.
Customer Performance Stats - https://www.mudmotorkit.com/forum/stats/index.php
This will show the engine sizes the medium kit was installed on, the type of boat, along with the weight, speed, propeller, and RPMs reached.
Most people put the SPS Swamp Runner Medium Kit (57lbs) with the 13hp Predator Engine (73lbs) - This setup will total 130-lbs.
You could also use a 16hp Vanguard V-twin engine that we sell on mudmotorkit.com
The 1436 riveted jon boat is the most widely used boat for this kit.
For example, User: durandbagwell86 reached 36-mph in a 15' wooden jon boat with a modified 420cc engine spinning 7200 RPMs with the 8" stock prop.
However, most customers use a stock 420cc predator engine and put it on a 1436 jon boat to achieve a speed of around 16 mph with a full load and 20+ mph with one person and a light load.
If you want more power, the next step up is the SPS Large Swamp Runner Kit (75lbs) which is normally paired with a 22hp Predator engine (106lbs) totaling 181 lbs. OR paired with a 23hp Vanguard that we sell here on mudmotorkit.com.
Our Medium Swamp Runner™ kit will fit a variety of engines between 8 & 14hp. So many in fact, there are simply too many engine makes and models to list all engines that will fit. The following is a short list of just a few of the engines that will fit this kit:
|Briggs - Vanguard||8hp (305cc)|
|There are simple too many Briggs / Vanguard engines made over the years to list.
Measure your engine using the Engine Requirements listed below this table.
|Carroll Stream Engines||11hp (337cc)|
|Harbor Freight: Predator Engines||8hp (301cc)|
60340, 60349, 69736
|Home Depot: Lifan Engines||13hp (389cc)|
|Honda||8hp GX240 (240cc)||Numerous engines with a "Q" Type shaft
Identified by a "Q" in the last 4 digits of the model number
A few examples:
|Honda||9hp GX270 (270cc)||GX270UT2QA2, GX270UTQAE2, GX270UTQXC9|
|Honda||11hp GX340 (340cc)||GX340UT2QA2, GX340UT2QNE2|
|Honda||13hp GX390 (390cc)||GX390UT2QAA2, GX390UT1QNE2, GX390UT2QXC9|
|Duromax|| ?hp (420cc)|
While they will fit our kits, we do not recommend Duromax engines.
Too many of our customers have had problems with them.
*The information in this table is provided by MudMotorKit.com as a courtesy service to our customers, and should only be used as a guide to help you choose a kit and match your engine with it. We could not possibly list information that would apply to all engines that are available and will fit our kits. While every effort has been made to provide useful information, the information may change. So, it is your responsibility to verify engine specs with the manufacturer of your engine prior to ordering.
Without physically seeing and measuring your engine, we cannot guarantee this kit will fit your application. If your engine is not listed above, you will need to consult the engine manufacturer, or take some measurements of your engine to ensure it meets the following requirements;
- The engine must have a horizontal output shaft.
- The output shaft must be 1 inch (25.4mm) diameter (non-tapered) with keyway.
- The engine side cover bolt circle diameter must be: 5 inches (127mm).
- Engine base bolt pattern must be: 7 11/16” X 3 ¾” (195.26mm X 95.25mm)
*Make certain you check the manufacturer’s specifications for your intended engine to ensure proper fit. The shaft size, engine base, and bolt circle patterns must match. The cost of return shipping is the responsibility of the buyer. We do our very best to provide a detailed and accurate description of our products. If you have any questions, please do not hesitate to call and ask before purchasing.
NOTE: The Carroll Stream 9hp engine, all engines with tapered or threaded PTO shafts & engines with gear reduction box options are not compatible with this kit.
|Heavy-duty steel Coupler Housing is zinc plated, then powder coated for superior corrosion protection.||
|Coupler Housings, Coupler Shafts, and Coupler Sleeve Joints so tough they come with a LIFETIME WARRANTY against cracking or breaking to the original owner.|
|Coupler shafts of Small, Medium & Large Kits ride smoothly on high quality Japanese radial bearings.|
|Offers longtail shafts featuring premium Bayou Bushings, a low friction proprietary bushing developed by Swamp Runner, and capable of withstanding extreme high temps without melting. Over 1000 hrs in a test tank with negligible wear. This bushing just doesn’t care what you throw at it.|
|Longer tiller handle designed to operate while standing up or sitting down, with position holes drilled in the handle, and locking bolts that prevent the handle from twisting in the mounting rings.|
|Squeeze type throttle lever that has the full throttle travel of your engine.|
|Stainless throttle cable that resists corrosion.|
|High quality sealed Japanese bearings in the gimbal mount for smooth, fluent handling of the longtail mud motor.|
|Gobs of shaft options to choose from: 5 different longtail shafts lengths varying from a 75" to 120" in length, Along with 4 different shaft options; Standard, Extreme Duty, Saltwater Extreme Duty, and Racing shafts.|
|Loads more propeller options than any other mud motor company. With more than 50 different props available including standard props, weedless props, performance props, stainless props, racing props, and even props that come with a .25" bore so you can tap it yourself!|
|The Weedless Skeg on Small, Medium and Large kits has a longer entry angle that repels vegetation and slides over logs easier.|
|First & only Thai longtail company to offer a Weed Cutter option that can be bolted directly to the weedless skeg using predrilled mounting holes.|
|A full time mud motor company offering knowledgeable support from over two decades of experience with Thai longtails in both Thailand and the USA.|
|Access to an active forum where customers enjoy learning about their longtail, and interacting with other owners and people who KNOW Thai longtails.|
|Access to numerous parts you can't get anywhere else.|
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