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Camo Material
500 denier Nylon
Water Resistant
& Windproof

 


Performance Engine Parts
 

Notice: Installation of after-market performance
parts voids the Vanguard manufacturer warranty.


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Large Block Vanguard

Mud Buddy produces the fastest and most powerful mud motors on the planet.

Brief History - Four years ago we teamed up with Performance V Twins to give you the HD 45 Mag and HD6000. Hundreds of the motors are in the marketplace today and they have earned their reputation for power, toughness and reliability.

Last year we teamed up with Mikuni to develop even more powerful motors and after meeting their stringent qualifications, safety requirements and field performance tests, we were awarded the national distributorship for industrial 4-stroke Mikuni carburetor systems. We now provide power systems for horizontal and vertical Kohler and Vanguard engines for performance mud motor, golf cart, mower racing, mini airboat and dune buggy enthusiasts around the world.

Last year we also teamed up with an aluminum lower drive performance sprocket manufacturer. We now have gear ratios to match up all 10 levels of Mud Buddy power with our big blade Mercury propeller.

Our work didn't stop there. This year we teamed up with Iron Mountain and will now incorporate their high performance heads into our 2009 lineup of performance engines. These heads are second to none. By early May, these heads will come standard with stainless valves.

Although we have limited supply now, by June, we will offer a full selection of internal engine components - cams, lifters, piston rods, roller rockers, push rods, pistons and custom gasket sets to those that like to build their own engines.

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Following is our lineup of performance motor options. Although it may seem a bit much, we have made it possible for a customer to purchase a Mud Buddy with a performance motor from BPS, Performance V-Twin and Iron Mountain or allow the customer an opportunity to purchase a stock 35 mud motor, any brand or model, and add the level of performance they desire at any time. Basically, you can pick your own pleasure.

What is most important is that customers can rely on the fact that when they purchase a Mud Buddy motor from us, its drive is built to handle the most extreme power we offer - right out of the box.


Level 1. HD 3500Z - Stock 35 Vanguard motor with BPS single or twin exhaust. 4000 rpm governor limited engine

 
Level 2. HD 4000S - HD 3500Z with single Mikuni 42mm flat slide carb. 4300 electronic rev limited engine

 
Level 3. HD 4000T - HD 3500Z with twin 30mm Mikuni round slide carbs. 4300 electronic rev limited engine

 
Level 4. HD4000TIM and H4000SIM - HD 4000 with Iron Mountain heads. 4600 electronic rpm rev limited engine

 
Level 5. Legendary HD 4500 Magnum - This motor started the mud motor performance craze. Cam, lifters, roller rockers, single or twin exhaust. 4600 governor limited engine

 
Level 6. HD 4500IM - HD 4500 with Iron Mountain Heads. 4600 electronic rev limited engine

 
Level 7. HD 5000 - HD 4500 with Single Mikuni Carb Kit. 5100 electronic rev limited engine

 
Level 8. HD 5500 - HD 5000 with Iron Mountain Heads. 5100 electronic rev limited engine

 
Level 9. HD 6000 - HD 4500 with twin 30mm round slide Mikuni Carbs. 5100 electronic rev limited engine (note - we will change to the 34mm round slide carbs in May)

 
Level 10. HD 7000 - HD 6000 with Iron Mountain Heads and twin 34mm Mikuni Carbs. 5100 electronic rev limited engine

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By popular demand, we are now offering these performance parts and more to the general public. These are the same performance parts used in our legendary 45, 5000 and 6000 engines. You will not find better original engineering and time proven dependability.

Iron Mountain Heads
Roller Rockers
Push Rod Set
Camshaft/Lifter/Rocker/Pushrod/Gasket Kit
Piston/Piston Rod Kit
Carb Spacer
Rev Limiter
Carb Rain Cover
Billet Throttle Kit
K&N Filters
Single Carb Kit
Twin Carb Kit
Single Crossover Stainless Exhaust
Twin Stainless Exhaust

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New BPS Single Super Quiet Stainless Muffler



BPS Muffler


- 304 Stainless
- Over sized baffles and internal tubes for a very quiet low rumble sound
- Hand tig welded
- Stainless heat shield
- 9mm tough exhaust flanges
- Heavy duty mounting brackets
- All mounting hardware included
- Available for vertical and horizontal large block Vanguard engines

$399

New BPS Cast Stainless Custom Throttle Lever

 


- 304 stainless
- Full throttle throw for single and twin Mikuni carbs

$34
also order these cables.
$18 for single mikuni cable
$18 for stock throttle cable (state when ordering

Iron Mountain Heads

 

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Available for after market use.
 

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They are decked using our recipe for best performance while using pump gas.
 

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The ports are maximized for flow. We enlarge and match them to our stainless muffler headers and shape them for the intake manifold.


 

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We increase the seat on the valves for maximum compression retention and good heat transfer from valve to head. We use interlock valve seats with a swirled polish finish - ground and sunk, competition style.


we have blurred the proprietary seat angles in this photo

This shows the stock (left) and new oversize stainless exhaust valve (right)

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We do not remove the valve guide post in the port which can lead to early valve failure. (we ran the heads with and without the in port guide and the difference was negligible, so we opted for longer head and valve life.)
 

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And, we added a valve spring spacer to allow high rev operation.


 

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We invite you to send us your heads for quick turn around.
 

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$530 per set (large or small Vanguard) plus upper end two head gasket set $52
Includes stainless valves with 3 angle surfaces.

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These heads must use our roller rockers and heavy duty push rods. If you have a 45 or 6000,
you will have these parts already installed.  See below.
-specify small or large Vanguard when ordering-

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Roller Rockers and Push Rod Kit

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Stock rockers are a 1.33:1 ratio.  These rockers are 1.5:1 which increase the fuel air mixture inflow and the volume of exhaust out of the cylinders. Basically - the engine breathes better.

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Made from seasoned 7075 billet aluminum.

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Made from aircraft grade aluminum and our new robust design ensures long life and no lifter flex when we induce added valve spring loads with the high rev spacer.

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Our exclusive roller bearing style rollers free up additional horsepower and reduce the side load on the valve stem for reduced wear and longer valve guide life. This also improves valve timing through the RPM range. This ensures that our valves seat better over a longer period.

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These rockers can be used to replace stock rockers or can be used on our performance cam shafts.

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We do not machine down the perches and eliminate the bosses that center the rockers. Meaning our roller bearing rocker system is well thought out for engine longevity. Our rockers are custom built, not modified from other applications to work on these engines.  Our rockers are better aligned and our rockers don't add additional side load to the valves, matter of fact, we reduce side load. Also, our rockers are designed to use stock valve covers. This took additional work, but well worth our time and design cost.

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Available for small and large block Vanguard motors.

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$340 per set of 4 rocker assemblies (we recommend using our heavy duty pushrods below)

specify small or large Vanguard when ordering

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Push Rod Set

     

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Our heavy duty push rods are matched to our cam lifters and roller rocker sets to ensure a positive lift and full rocker adjustment.

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Made from seasoned 7075 billet aluminum with hardened tips.

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Available for small and large block Vanguard engines.

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$80 per set

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Camshaft/Lifter/Rocker/Pushrod/Gasket Kit

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A BPS manufactured performance high lift cam that customers have been waiting for.

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Why we are superior: Our exclusive cam shafts are custom built from factory blank stock, allowing us to build custom perfect lobs that add maximum performance and long cam life.  Building the cam from raw stock takes more time and adds cost, but the end result is a high tolerance perfectly aligned cam that lasts.

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What we don't do is build up our cam lobes by adding welded material to the cam face which creates a handful of issues including metallurgy changes, welding slag which affects balance, welded hard spots that cause shorter lifter life; and the welding process causes heat warping which leads to early cam bearing failure.

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Includes cam, lifters, roller rockers, gaskets and push rods. Individual parts can be purchased.  Call Micah for pricing - 801.352.8011

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$300 with lifters

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High RPM Piston Rods

 

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Piston rods are made from seasoned billet aluminum.

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Matched to fit your crank - no machine work required on crank.

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Come in sets of two and includes custom end-bolts.

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Instructions and torque specs provided.

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Must be used with our custom pistons.

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$270 per set of two

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Piston Set

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Custom shaved piston works with our piston rods.

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Come complete with rings and wrist pin.

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Instruction provided.

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$150 each

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Large Block Vanguard Twin Stainless Exhaust

bulletIncreased performance
bulletSolid internal baffles
bulletPolished stainless finish
bulletLarge intake and exhaust tubes
bulletCool aggressive, but mellow tone
bulletEasy installation
bulletComes complete with mounting brackets and hardware

$480 plus shipping

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New

Large Block Vanguard Stainless Single Crossover Exhaust

 

Available for both horizontal and vertical motors. Specify when ordering.

bulletIncreased performance
bulletSolid internal baffles
bulletPolished stainless finish
bulletLarge intake and exhaust tubes
bulletCool aggressive, but mellow tone
bulletEasy installation
bulletComes complete with mounting brackets and hardware



exceptional TIG welded

$480 plus shipping
 

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Stainless Small Van Single Crossover Exhaust



 

bulletIncreased performance
bulletSolid internal baffles
bulletRequired for the single carb kit
bulletPolished stainless finish
bulletLarge intake and exhaust tubes
bulletCool aggressive, but mellow tone
bulletEasy installation
bulletComes complete with mounting brackets and hardware (mounting brackets not shown)

$480 plus shipping 

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Twin Mikuni Kit

bulletOEM matched Mikuni carb set
bulletDealer or Mud Buddy installation required
bulletCustom intake manifolds
bulletK&N filters with waterproof micro-prefilters
bulletThin lever throttle with twin adjustable cables
bulletUp to 600 rpm increase
bulletBuilt in rev-limiter protects your engine
bulletAmazing throttle response and top end
bulletIdles from 900 to 1100 rpm
bulletImproved fuel economy
bulletNew sound and feel
bulletAdd to HD45 (AKA HD 6000) or stock HD 35 Sport (AKA HD 4000)
bulletGuaranteed enhanced power or return the kit within 30 days for a full refund.
bulletKit includes, Mikuni carburetors, BPS kit parts such as the manifold adaptors, air cleaner adaptors, air cleaners, engine cowl (predrilled for intakes), air cleaner pre-filters, engine air deflector, throttle cable mount, throttle cable and thin throttle handle, 5000 rpm rev limiter, photo instructions, carb manual, and mounting hardware.
bullet $1400 for kit plus shipping


 

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Single Mikuni Kit Small and large block Vanguard (our best selling carb kit)

bulletshown with twin stainless exhaust



We offer the original large block Vanguard single carb kits.  These were developed with
guidance and assistance from Mikuni USA. Kits come complete with everything you need.  Our kits
do not require you to cut and trim the engine cowl.  We use a flow matched billet intake that outperform
oversize welded tube style intakes providing you superior low end throttle response and pleasing top

end performance. Our kit is very easy to install and comes complete with step by step photo instructions.

bulletBillet aluminum intakes
bulletPhoto instructions
bulletCustom marine rev limiter
bulletAmazing hole shots
bulletImproved acceleration
bulletImproved mid and top end
bulletSmooth idle speeds
bulletPreset for your engine by Mud Buddy - No fine tuning required.
bulletCustomer or dealer installation
bullet42mm Mikuni carburetor (large block Vanguard and Kohler 40)  34mm Mikuni for 23 Vanguard
bulletUses stock throttle and cable
bulletEasy installation (1-2 hours with simple hand tools)
bulletMarine and K&N air filter and waterproof micro-prefilter
bulletCustom cone shaped ram-air filter attachment
bulletCrankcase ventilation adaptor kit
bulletGovernor arm block
bulletUp to 400 rpm increase
bulletAmazing fuel economy due to improved fuel atomization 
bulletGuaranteed enhanced power or return the kit within 30 days for a full refund.
bulletKit includes all mounting hardware.

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23 Van Kit (Brush guard not shown.)



 

     31 & 35 Van Kit (Brush guard not shown.)





    
32 & 36 Van Vertical Kit


5 kits - state model when ordering

29 Van, 31 Van, 35 Van Kit 42mm (CK-SS35) $695

45 Van Kit 42mm (CK-SM45) $695

23 Van Kit 42mm (CK-SS23) $695

32 and 36 Van Vertical Motor Kit 42mm $695 (CK-SSV36)
45 Van Vertical  Kit 45mm $695 (CK-SMV45)

 

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Custom Throttle Lever


also shown on motor photos below

bulletAluminum construction
bulletIncreased throttle swing
bulletBillet slim design
bulletLightweight pull
bulletEasy installation
bulletComes complete with throttle cable

Two types (state when ordering)

Stock 29, 31 and 35 Vanguard $75 plus shipping (A-136)

Single Mikuni Carb Kit motors $75 plus shipping  (CKC-29)

order by Paypal
 

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Custom
Gearing

bulletStock 35 Mud Buddy Vanguards come with a 38 tooth top clutch and 50 tooth bottom drive pulley. Custom lower pulleys are now available.

Recommended:
HD 4000  - 38 top and 49 bottom pulley  (1:1.289 gear ratio)
HD 45 Mag - 38 top and 48 bottom pulley  (1:1.263 ratio)
HD 5000 - 38 top and 47 bottom pulley  (1:1.236 ratio)
HD 6000 - 38 top and 46 bottom pulley  (1:1.210 ratio)
HD 7000 - 40 top and 46 bottom pulley (1:1.15 ratio)
 
bulletLower Pulleys sizes - state when ordering.
49, 48, 47 and 46 tooth (state size) Specify when ordering Hyper (7/8" drive) or Sport (25MM).

$85 plus shipping

Note: For larger boats and loads, use one tooth larger bottom pulley.

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Rev Limiter


 

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Performance motors without governors need high speed rev limiters to protect
the engine from over-reving.
 

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5100 RPM for HD 5000, 6000 and 7000 engines
 

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4600 RPM for HD 4000 with valve spring spacers
 

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4300 RPM for HD 4000 single Carb stock engines

$120.00 - state size when ordering
 

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K&N Filters


 

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Fit all our twin and single carb kits.

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Increased air flow, easy to clean, lasts for years.

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HD 6000 and HD 7000 twin filters (need 2)

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HD 4000 and HD 5000 single filters

$42 each - state type when ordering

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K&N and Tau Ceti Prefilters - Micro fine covers help protest the engine from dust and wet weather.


Tau Ceti Single Carb Kit with Pre-filert

 

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Fits all our single and twin carb kits.

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HD 6000 and HD 7000 twin filters (need 2)

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HD 4000 and HD 5000 single filters

$18 each - state type when ordering

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Air Cleaner Rain Cover

- Helps keep moisture from entering the carb.
- Pleated to draw air
- Reduces sun damage to the prefilter.
- Brushed stainless finish
- Snaps on to the air cleaner.
- Should be left on for year protection.

Single Carb - $18

Twin Carb Set - $32




Even with the carb covers, we
recommend the engine be covered and place in the upward
travel position when in long term storage to keep water from entering the engine.

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Mud Buddy Model Identification

HD 4000S - Stock 35 with single 42mm Mikuni Kit
HD 4000T - Stock 35 with twin 30 mm Mikuni Kit
HD 45 - Custom Motor - Cam, rods, roller rockers, etc.
HD 5000 - HD 45 with single 45mm Mikuni Kit
HD 6000 - HD 45 with twin 30 Mikuni Kit
HD 7000 - HD 6000 with twin 34 Mikuni Kit and
Iron Mountain Heads


Iron Mountain Heads are available for all Van engines.

Twin Carb HD 6000 - World's most powerful mud motor.
(HD6000 is a HD45 with twin carbs)




Video of new HD 6000 level 10
Click photo below to play, click to stop.

DSL/Cable

 

Dial up

 

 

Performance Centers

Twin Carb VM Manual

HSR Single Carb Exploded View
 

* Performance engines are not available for shipment to California.
 

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