C100 In./Ex. Valve 70cc/90cc/110cc

Brand: Mortch Motor
Product Code: MIC100-6021

Product Viewed: 33

Availability: In Stock

Weight: 0.04kg

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¥9.00

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70cc

90cc

110cc

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C100 Intake & Exhaust Valves

🔧 Intake Valve · Exhaust Valve · Valve Train Components

For Moped, Cub & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines

📋 Product Overview

These are C100 Intake and Exhaust Valves, core components of the engine's valve train. They are suitable for Mopeds, Cub series, and ATVs, and fit engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.

The intake valve controls the entry of the air-fuel mixture into the cylinder, while the exhaust valve controls the expulsion of burned gases. The condition of these valves directly affects intake efficiency, exhaust efficiency, combustion quality, power output, and fuel economy. Manufactured from high-quality heat-resistant alloy steel with excellent wear and high-temperature resistance, they are an ideal replacement when original valves are worn, burned, or have poor sealing.

✨ Key Functions: Controls intake and exhaust · Ensures combustion efficiency · Heat and wear resistant · Direct replacement

📐 Specifications

Product Name

Intake & Exhaust Valves

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Material

Heat-Resistant Alloy Steel

Includes

Intake Valve + Exhaust Valve

🔧 Compatible Engine Models

These C100 intake and exhaust valves fit the following engine models:

139FMB

147FMD

147FMF

150FMG

Engine Reference Information:

139FMB: 1P39FMB / 1P39QMB · 50cc-125cc universal engine
147FMD: 1P47FMD · 70cc-110cc engine
147FMF: 1P47FMF · 90cc-110cc engine
150FMG: 1P50FMG · 125cc-150cc engine

🛵 Compatible Vehicles

Mopeds - Various 50cc-150cc moped models
Cub Series - Honda Cub and clone models
ATVs - Small-engine quad bikes / kids ATVs
Mini Moto / Pocket Bikes
Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines

📌 Compatibility Note: These C100 intake and exhaust valves are suitable for the engine models listed above. Before purchasing, please verify your engine model matches, and it is recommended to replace the valve stem seals at the same time.

⚙️ Importance of Intake and Exhaust Valves

🔧 Intake Valve

Controls the entry of fresh air-fuel mixture into the cylinder. Its timing and sealing directly affect intake efficiency and combustion quality.

🔧 Exhaust Valve

Controls the expulsion of burned gases from the cylinder. Its condition affects exhaust efficiency and the next cycle's intake quality.

🛡️ Sealing Performance

The seal between valves and valve seats directly affects cylinder compression pressure, impacting power output.

🔥 High-Temperature Resistance

Exhaust valves operate at extremely high temperatures, requiring superior heat-resistant materials to prevent burning and deformation.

⚠️ Valve Failure Symptoms: Loss of power, rough idle, hard starting, increased fuel consumption, exhaust smoke, valve noise, low cylinder compression. If you experience these issues, inspect the valves and replace if necessary.

⚠️ Valve Failure Symptoms

Loss of Power: Engine feels underpowered, sluggish acceleration.
Rough Idle: Engine vibrates at idle, unstable RPM.
Hard Starting: Difficult to start cold or hot.
Increased Fuel Consumption: Poor valve sealing causes incomplete combustion, higher fuel usage.
Exhaust Smoke: Poor sealing may allow oil into combustion chamber or cause black smoke from incomplete combustion.
Valve Noise: Excessive valve clearance or wear causes tapping or clicking sounds.
Low Cylinder Compression: Compression test readings below specifications.

If you experience these symptoms, inspect the valves and replace if necessary.

✨ Product Features

OEM Specifications: Manufactured to original specifications for perfect fitment.
Quality Materials: Made from high-temperature, wear-resistant alloy steel with excellent heat and corrosion resistance.
Precision Machined: Precision ground valve stems and accurate valve face angles for proper sealing with valve seats.
Heat Treated: Special heat treatment improves hardness and wear resistance.
Complete Set: Includes both intake and exhaust valves for comprehensive replacement.
Direct Replacement: Perfect substitute for worn or damaged original valves.

🔧 Installation Tip

1. Replacing valves requires removing the cylinder head – professional installation is recommended.
2. Before installation, inspect valve guides for wear; replace if necessary.
3. After installing new valves, perform valve lapping or check sealing with the valve seats.
4. Adjust valve clearance to OEM specifications after installation.
5. It is recommended to replace valve stem seals at the same time for proper sealing.
6. Check valve sealing after assembly before installing on the vehicle.

⚠️ Important Notice: These are C100 intake and exhaust valves for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. Valves are critical engine components; replacement requires proper mechanical skills. It is recommended to replace valve stem seals and inspect valve guides at the same time. Images are for reference only. The actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.