Description
Overview:
The Model 3 Ring Set (Standard Size 150cc) is a genuine JAP replacement piston ring pack for the JAP Model 3 single‐cylinder engine. Built from durable engine-grade metal to withstand heat, friction, and fuel contaminants, it restores the correct seal between piston and cylinder. This improves compression, starting, power delivery, and oil control. The set is intended for vintage JAP Model 3 engines commonly used in older small plant and stationary machinery. As standard size, it suits an unmodified standard bore, making fitting straightforward during routine top‐end work or full restorations. Supplied as unused old stock, items may show light storage tarnish or minor marks, but performance remains unaffected. A reliable choice when you want original specification, fit, and function from a genuine JAP part.
Key Features:
- Genuine JAP part for correct specification and reliable fit on 150 cc Model 3 engines
- Standard size rings for a standard bore, avoiding the need for oversize machining
- Durable construction for long service life under heat and load
- Restores cylinder sealing to improve compression and starting performance
- Helps reduce blow‐by, oil consumption, and exhaust smoke after wear
- Suitable for routine top‐end refreshes and full vintage restorations
- Precise ring profiles to promote proper bedding‐in and consistent operation
- Supplied as unused old stock; cosmetic ageing may be present but function is intact
- Compatible with original standard‐diameter pistons used in JAP Model 3 engines
- Practical choice for maintaining authenticity and dependable running in vintage machinery
Typical Applications:
Used during top‐end rebuilds of JAP Model 3 engines to recover lost compression, address hard starting, and stabilise oil control. Suitable for preventative maintenance, routine overhauls, and comprehensive restorations of vintage small plant and stationary equipment powered by the 150 cc JAP Model 3.
Also known as:
Standard bore piston ring kit; 150 cc ring pack; JAP Model 3 ring pack; compression and oil control ring set; standard size piston rings for JAP 3; vintage JAP Model 3 ring kit.
Fits Models:
JAP 3, JAP3, Jap Model 3
Product Specifications
| L&S Part No. | MODEL 3 RING SET |
|---|---|
| Part Type | Genuine Part |
| Unit of Sale | 1 |
| Applications | JAP 3, JAP3, Jap Model 3 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Fits Models | JAP 3 |

