CISON Small-block V8 Pro 44cc Engine Kit is a 1/6 scale high-performance DIY model that replicates a real V8 gasoline engine with impressive detail and functionality. Featuring a top-mounted valve (OHV) design, this four-stroke, water-cooled internal combustion engine delivers powerful performance and mechanical authenticity. Perfect for RC model upgrades, engineering education, or desktop display,
New vs. Old – Key Upgrades:
Structural Reinforcement: The engine now uses flange bearings on both the front and rear of the cylinder block, eliminating previous wear issues caused by bearing shifting. This significantly enhances stability and durability during operation.
Performance Optimization: Compression ratio has been re-calibrated to reduce fuel injection needs and improve spark plug longevity. These adjustments resolve common wear issues and deliver smoother, more stable power output.
Improved Smoothness: The carburetor rotor has been hardened for smoother rotation without jamming, addressing defects found in ordinary steel parts. Paired with a distributor that adjusts ignition timing with throttle input, the engine supports lower idle speeds and higher peak performance.
Premium User Experience: Delivered in an all-new deluxe V8 PRO gift box with top-and-bottom case design. Whether for desktop display, RC model upgrades, or as a luxurious gift, it delivers a refined and impressive presence.
.DIY Fun:
Crafted with high-precision parts, and easy-to-follow assembly instructions for a deep understanding of engine structure and mechanical principles.
.Highly Realistic: Adopt exquisite electroplated paint for a lifelike engine appearance, suitable for real fuel operation, and provides a location for optional generator installation.
.Precision Manufacturing:
The cylinder is precision machined with 5-axis CNC, with repeatability within 0.005mm for better assembly accuracy.
.Long Stroke:
High-angle, high-hardness wear-resistant camshaft, 4-point supported camshaft, larger intake valve, unaffected by temperature changes with low-temperature intake pipe.
.Crankshaft and Connecting Rods:
Reinforced and hardened wear-resistant connecting rods, optional dual cast iron piston rings (oil rings are optional), 5-point supported crankshaft for increased high-speed operational strength and stability.
.Durable Operation:
Equipped with a double-layer gear pump water pump, independent lubrication system, and reserved oil filter installation position. This model in the OHV version can be combined with a rocker arm forced lubrication system with rocker arm lubricant returning to the cylinder block holes, and an oil sump with an oil level gauge.
.Creative Gift:
The assembled model is perfect as a collectible desktop engine model or be installed in RC models, as well as a premium model holiday gift.
Age Recommendation: 16+
Specifications:
.Material: Metal .Color: Orange .Brand: CISON .Model: V8-OHV-44 PRO .Product Name: Small-block V8 Gasoline Engine Model .Form: Kit Version .Engine Type: Gasoline Internal Combustion Engine .Valve Train: Overhead Valve (OHV) .Displacement: 44 cc（8 x 5.5cc） .Cylinder: V-Type 8-Cylinder .Stroke: 4-Stroke .Cylinder Diameter: 18.5mm .Stroke:20.5mm .Speed: 1500-10000 rpm .Power: Approxl. 5.5ps .Cooling Method: Water Cooling .Startup Method: Electric Starter .Ignition Method: CDI Induction Ignition .Spark Plug Type: Imperial Thread 3/16-40 Spark Plug (not included) .Starting Power: 12V battery (not included) .Lubrication Method: Independent Lubrication System .Fuel: 92# Gasoline (92# or higher recommended) Engine Oil: 4T engine oil (10W50 engine oil/25ML recommended) .Product Weight: 1700g .Package Weight: 3200g .Product Dimensions: 15.6 x 11.7 x 9.9cm .Package Dimensions: 19 x 21 x 19cm .Packing: Gift box with top and bottom lid .Ages: 16+
Package List:
.Engine Parts *1set .Accessories *1set .Instruction Manual *1
Features:
Hands-On DIY Engine Build: Experience the joy of mechanical assembly with high-precision components and clear instructions. Learn engine structures and working principles as you build your own functional masterpiece from scratch.
Realistic Simulation & Functionality: Features iconic electrophoretic orange coating and supports actual fuel-powered operation. Includes a reserved slot for generator installation, delivering both authentic appearance and mechanical performance.
Precision CNC Engineering: The engine block is crafted using advanced 5-axis CNC machining with a repositioning accuracy of 0.005mm, ensuring perfect fit and smooth operation for a premium mechanical feel.
High-Torque, Stable Power: Built with extended-stroke camshafts, larger intake valves, reinforced connecting rods, a 5-point crankshaft, and an independent lubrication system for sustained high-power output, perfect for RC applications.
Collectible, Playable, Giftable: Once assembled, this engine serves as a stunning desktop display, can be used to power RC models, or makes an impressive gift for mechanical enthusiasts and hobbyists.
Kind Reminder:
This engine is a parts kit version and comes with a complimentary CDI ignition system. It does not include water cooling components, spark plug, fuel tank, fuel tubing, or engine base. Please follow the instructions carefully when assembling and operating the engine to avoid damage caused by improper use. If you have any questions, feel free to connect with us.
Product Introduction:
CISON V8-OHV-44 PRO Engine makes a powerful debut, continuing the legacy of the original classic with a full-scale upgrade. Featuring a striking electrophoretic orange paint finish, it’s equipped with a high-angle stroke, 4-point supported camshaft, enlarged intake valves (larger than exhaust valves), a 5-point supported crankshaft, reinforced wear-resistant connecting rods, dual cast-iron piston rings (optional oil ring), independent lubrication system, a dual-layer gear-driven water pump, and optional generator support.
This new generation addresses key issues from previous versions with precise improvements to components such as the cylinder bearings, compression ratio, pistons, and valves—resulting in enhanced DIY fun, high realism, and powerful performance. It’s not only an exceptional educational tool for exploring mechanical principles but also serves as the “power heart” for RC models, and a unique collectible or premium gift for enthusiasts.
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I am pleased to see that you have taken the time to look for customer imput. I am taking my time to complete the engine and have enjoyed the experience, so far. My biggest negative, and I know that you have heard this before, are the instructions. I think a lot of people would attempt building the engine with better information available. I know with my engineering experience I will overcome any issues that may arise. My only other negative is a missing threaded rod for the oil filter. The rating I would give it is a 4 1/2 but it was not available.
J
Joachim M (Yverdon-les-Bains, CH)
Great engine but some details could be improved
This engine is absolutely beautiful and fantastic.
The machning is really good.
Some details could be improved :
Mounting instruction.
The section about the oil and water line is really poor.
The piston rings orientation could be also more clearer and also on the rods you have a small lubrification hole.
Take care to put in in the center of the engine (to get oil from camshaft)
2 threads in the oil pan is not in the good size (M2 instead of 2.5)
The head gasket is also not perfect. Had to cut a little bit the hole where pushrods get through (most of them are touching the gasket and the valves doesn't close easily)
In the cylinder heads, they should add a lillte machining under the 4 long screws because the surface is not parallel of the bottom of the screw and they are note sitting properrly
And for the complete set with water cooling, you have no instruction how to connect the second extra tank ( for fuel but no tube in or for coolant)
L
Larry (East Troy, US)
CISON OHV V8 is fantastic
I have built several model engines and they all were difficult to get running involving many hours of experimentation and occasionally replacing a burned out starter motor. The CISON V8 fired up on my first attempt! I even used only a 7.4 volt battery to reduce the strain on the starter motor and this was perfectly adequate. I built the (surprise) circuit board into the alternator and it works perfectly. I have yet to install the cooling system but the double gear pump and large radiator should actually work, in contrast to other engines where the water starts to boil after a few minutes unless a large external water reservoir and an auxiliary water pump are added. Finally, after adding the ignition wires, the oversize distributor is no longer so obvious and it is the best looking engine ever. I only wish it would come in Ford blue since it looks much closer to a Ford V8 than a Chevrolet V8.
e
ec lozon (Castaic, US)
This engine is amazing
I have built several small engines, including the Howell V-4 from bar stock. This engine is unlike any of them took me about a month to assemble. I took my time and it starts instantly every time and it sounds like a NASCAR motor. It is unbelievable to hear.
The quality of this kit is nothing short of amazing I have never seen this level of machining ever.
The packaging was equally impressive. I can’t think of one thing I would’ve changed on the kit with the exception being perhaps the manual. I would like to have much more information that that it contains.
The value of this kit is also noteworthy and is well worth the price.
I put a deposit on the transmission that’s in the works I guess and I definitely will build more of these engines in the future.
One last thing… The service and product support are great, specifically I’d like to thank Lucas for helping me through some of my questions.
R
Run (Vallensbæk Strand, DK)
Beautiful engine
Fantastic kit.
Very well made, I have not assembled it yet, but it is looking very promesing.
The machine work is fantastic.
