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Trusted Global Engine Component Supplier


19.15.210 Guascor SFGLD Complete Piston

The piston kit is suitable for Guascor SFGLD gas engines.

Guascor 1915210 side view Guascor 1915023 upper view
Guascor 1915023 lay view Guascor 1915210 fron view

 

Detailed content of 1915210 complete piston set:

PART NUMBER DESCRIPTION QUANTITY
1915023 HGM PISTON 1
1915280 SFGLD PISTON RING SET 1
1615084 PISTON SHAFT 1
7415066 CIRCLIP 165DIN472 2

 

Guascor HGM complete piston kit with part number 1915210 is a crucial component for maintaining the optimal performance and longevity of Guascor HGM engines. This kit is a precisely engineered assembly of parts, each playing a vital role in the engine's combustion process and overall reliability. It includes the 1915023 FGLD Piston, the 1915280 Piston Ring Set, the 1615084 Piston Shaft (Pin), and the 7415066 Circlips.

The Guascor HGM Piston: Design and Quality

The 1915065 piston is the heart of this kit.

A notable and innovative feature of this piston is its distinctive "flower" shape combustion bowl less sophisticated than its successor fitted in later SFGLD engines. This unique design is not merely aesthetic; it is a critical engineering element that plays a significant role in engine performance. This specific geometry optimizes the flow imrpving turbulance and mixing. The shape of the combustion bowl creates turbulence and swirl within the cylinder. As the piston moves up, it compresses the air and forces it into this bowl. This movement creates a high degree of turbulence, which helps to thoroughly mix the injected fuel with the compressed air. This is crucial for efficient and complete combustion. Better mixing leads to higher power output, reduced emissions, and improved fuel economy.

he bowl shape also helps to guide the flame front during combustion. By concentrating the air-fuel mixture in a specific area, the flame can spread outward more uniformly and quickly. This controlled flame propagation helps to prevent knocking or detonation, which can severely damage an engine.

The piston crown's shape is part of the combustion chamber. In many modern engines, the top of the piston is not flat but has a specially designed bowl, often referred to as a "combustion bowl" or "combustion chamber bowl." This shape is meticulously designed to optimize the combustion process by controlling how the fuel and air mix as the piston approaches the top of its stroke.

To manage the immense heat generated during operation, the pistons are actively cooled. A dedicated oil cooling jet sprays lubricating oil onto the underside of the piston. This oil, sourced from a specific, regulated-pressure gallery, either sprays directly onto the base or circulates through an internal gallery within the piston itself. This cooling method is essential for preventing thermal stress and extending the life of the piston and other engine components.

The Piston Ring Set 1915280

The 1915280 piston ring set consists of three rings, each with a specific function:

  1. Compression Ring: This is a chrome-plated rectangular ring on a piston ring carrier. Its primary function is to form a tight seal against the cylinder wall, preventing combustion gases from escaping past the piston. This ensures maximum compression and power.
  2. Scraper Ring: Positioned below the compression ring, the scraper ring's job is to scrape excess oil from the cylinder walls during the piston's downward stroke, preventing it from entering the combustion chamber.
  3. Greasing Ring: Also known as the oil control ring, this ring is designed to distribute a thin, lubricating film of oil evenly on the cylinder wall while also collecting and returning excess oil to the sump.

Technical Details: Clearance and Limits

The following table provides crucial technical specifications for the piston and its rings, outlining the clearances and tolerances required for proper function and engine health. Adhering to these specifications is vital during service and maintenance.

Clearance and Limits in Piston and Piston Segments

Parameter Specification (mm)
Height of groove 1 (compression ring) 3.54 to 3.56 limit 3.7
Height of groove 2 (scraper ring) 3.54 to 3.56 limit 3.7
Height of groove 3 (oil control ring) 4.02 to 4.04 limit 4.15
Clearance of segment 1 in groove 0.05 to 0.085 limit 0.15
Clearance of segment 2 in groove 0.05 to 0.082 limit 0.15
Clearance of segment 3 in groove 0.03 to 0.062 limit 0.15
Slot No. 1 piston no data available
Slot No. 2 piston no data available
Slot No. 3 piston no data available
Elevation from bolt shaft on upper face no data available
Volume of chamber no data available 
Piston shaft dia 65.00 (+/- 0.008)

 

Guascor piston section drawing

 

Maintenance and Service Intervals

Proper maintenance is paramount for the long-term health of a Guascor engine. The piston kit components are subject to specific replacement schedules:

  • Piston rings should be inspected and changed, if necessary, during the R2 service cycle at 20,000 operating hours.
  • The piston itself should be changed at the R3 service cycle at 30,000 operating hours.

These service intervals are general guidelines and may need to be adjusted based on the type of fuel used and the engine's operating load. Adhering to these schedules and ensuring the replacement of pistons and corresponding rings (part number 1915280) is utmost important to keep engine performance at its peak and prevent major engine failure. Ignoring these service requirements can lead to loss of compression, increased oil consumption, and catastrophic damage to the engine's internal components.

This piston kit is also available in OEM version. The OEM piston is manufactured my Mahle and we have direct access from the factory.

Mahle is a major supplier of pistons for Guascor engines, and the quality of their industrial pistons is highly regarded in the industry. The 1915560 piston kit, for example, is used in Guascor HGM560 and SFGM560 gas engines and is manufactured by Mahle, the OEM (Original Equipment Manufacturer) for the part.

Mahle is a leading international development partner and supplier to the automotive industry. They specialize in components and systems for internal combustion engines and engine peripherals. Their extensive experience and focus on research and development contribute to the high-quality standards of their products, which are crucial for the demanding environment of industrial engines.

The quality of a piston is critical for engine performance and longevity. Pistons must withstand extreme heat, pressure, and mechanical stress. The materials and manufacturing processes used by Mahle are designed to meet these challenges, ensuring reliability and durability. Their pistons are engineered to precise specifications, which is essential for the smooth operation of high-performance engines like those from Guascor. This relationship highlights how Guascor relies on established, high-quality component manufacturers like Mahle to produce reliable and efficient engines.

Guascor OEM HGM & SFGM Piston Kit

 

New design, improved performance

Guascor's commitment to research and development has led to significant improvements in its engines, particularly through the redesign of key components like the piston's combustion bowl. This focus on innovation is driven by the need to enhance performance, increase reliability, and improve efficiency in their gas engines.

The combustion bowl, which is the specially shaped cavity on the top of the piston, plays a critical role in the combustion process. It's not just a simple indentation; its geometry is meticulously engineered to control how the air and fuel mix under high pressure.

Guascor's engineers have fine-tuned the shape of this combustion bowl to create more effective air turbulence and swirl as the piston moves up the cylinder. This improved turbulence ensures a more uniform and thorough mixing of the air-fuel charge, which is crucial for efficient combustion. Better mixing leads to a more powerful and complete burn, resulting in higher power output and better fuel economy.

Furthermore, these design changes contribute directly to enhanced engine reliability. A more controlled combustion process reduces the risk of harmful phenomena like knocking or detonation, which can cause significant damage to engine components over time. By optimizing the flame propagation within the cylinder, the new piston design helps to maintain engine health and extend its operational life, ultimately providing customers with a more reliable and cost-effective solution for their industrial power needs.

Guascor Pistonssfgld_piston_kit.jpg

Trasformation of the piston combustion bowl owing to research & development to provide better engine peformance

 

 

For operators of older Guascor engines, the good news is that previous generation piston designs remain relevant and are still available. While research and development have led to advanced components, these older-style pistons are not obsolete. They are manufactured and kept in stock to support the maintenance and repair of legacy engines. This ensures that engine owners can continue to service their equipment with the correct parts, maintaining the original performance specifications and reliability that the engine was designed for.

The availability of these components is crucial for long-term operational viability, as it avoids the need for costly and time-consuming engine modifications. By using the original piston design, the engine's combustion characteristics, power output, and emissions remain consistent with its factory specifications. This continuity in parts supply is a key factor in extending the service life of older industrial engines, providing a convenient and reliable solution for maintenance professionals worldwide.

We are committed to supporting our customers who operate on a low budget by providing a reliable and cost-effective solution for their engine maintenance needs. For those who require parts for older Guascor engines, we offer an extensive inventory of previous generation piston designs from stock. This ensures that you can service your equipment with the correct components without the need for expensive engine modifications. The availability of these older-style pistons allows for the convenient and timely repair of legacy engines, maintaining their original performance and reliability specifications. By keeping these parts in stock, we help extend the operational life of your equipment and provide a budget-friendly option for your maintenance and repair needs.

visit piston selection guide

 Guascor 1915560 piston removal

Verified 2025 August

поршень Гуаскор SFGLD560