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Help Center3.7L 201CID OHV 12V V6 Engine Piston Ring Repair For Commander Cherokee Liberty JEEP
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Certification:ISO9001 / ISO14001
Piston Ring for 3.7L V6 SOHC 12V P/UP DODGE - JEEP LIBERTY 99 - 11 Chrysler Dodge Town Country Dakota 3.3 3.7 L VIN R/3 E529
Product Component: • 93mm(STD)Hastings Pistons Rings Set
• SET OF RINGS FOR 6 PISTONS
• 1st Ring Size 1.5mm
• 2nd Ring Size 1.5mm
• Oil Ring Size 3.0mm
Car Application:
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1993 - 1996 Chrysler Concorde 3.3L 201CID OHV 12V V6 |
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1990 - 1993 Chrysler Dynasty 3.3L 201CID OHV 12V V6 |
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1990 - 1991 Chrysler Imperial 3.3L 201CID OHV 12V V6 |
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1993 - 1997 Chrysler Intrepid 3.3L 201CID OHV 12V V6 |
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1990 - 1993 Chrysler New Yorker 3.3L 201CID OHV 12V V6 |
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1990 - 1993 Chrysler Town & Country 3.3L 201CID OHV 12V V6 |
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1996 - 1997 Chrysler Town & Country 3.3L 201CID OHV 12V V6 |
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1990 - 1997 Dodge Caravan 3.3L 201CID OHV 12V V6 |
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2004 - 2010 Dodge Dakota 3.7L 226CID V6 SOHC |
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2004 - 2009 Dodge Durango 3.7L 226CID V6 SOHC |
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1990 - 1993 Dodge Dynasty 3.3L 201CID OHV 12V V6 |
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1990 - 1997 Dodge Grand Caravan 3.3L 201CID OHV 12V V6 |
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1993 - 1997 Dodge Intrepid 3.3L 201CID OHV 12V V6 |
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2007 - 2010 Dodge Nitro 3.7L 226CID V6 SOHC |
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2002 - 2010 Dodge RAM 1500 Truck 3.7L 226CID V6 SOHC |
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2006 - 2010 Jeep Commander 3.7L 226CID V6 SOHC |
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2005 - 2010 Jeep Grand Cherokee 3.7L 226CID V6 SOHC |
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2002 - 20010 Jeep Liberty 3.7L 226CID V6 SOHC |
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2006 - 2009 Mitsubishi Raider 3.7L 226CID V6 SOHC |
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1990 - 1997 Plymouth Grand Voyager 3.3L 201CID OHV 12V V6 |
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1991 - 1997 Plymouth Voyager 3.3L 201CID OHV 12V V6 |
What is a piston ring
Located between the cylinder and the piston, piston rings are necessary components that allow the engine to operate efficiently.
1. Piston rings maintain gas compression between the piston and the cylinder wall.
2. Piston rings usually make necessary minimum lubricating oil film for preventing scuffing.
3. Piston rings transfer heat from the piston crown to the cylinder.
4. Piston rings prevent the piston from knocking on the cylinder wall.
Most automotive pistons have three rings: The top two while also controlling oil are primarily for compression sealing (compression rings); the lower ring is for controlling the supply of oil to the liner which lubricates the piston skirt and the compression rings (oil control rings). At least two piston rings are found on most piston and cylinder combination. Typical compression ring designs will have an essentially rectangular cross section or a keystone (right angled trapezoidal) cross section. The periphery will then have either a barrel profile (top compression rings) or a taper napier form (second compression rings or scraper rings). There are some taper faced top rings and on some old engines simple plain faced rings were used.
Lubrication of piston rings is difficult and has been a driving force to improvements in the quality of motor oil. The oil must survive high temperatures and harsh conditions with a high-speed sliding contact. Lubrication is particularly difficult as the rings have an oscillating motion rather than continuous rotation, as for a bearing journal. At the limits of piston movement, the ring stops and reverses direction. This disrupts the normal oil wedge effect of a hydrodynamic bearing, leading to pronounced wear and the formation of a 'step' in the cylinder bore around the height of the upper ring. Noting that some sleeve valve engines suffered far less from such wear, complex designs such as a rotating cylinder liner have been considered, just to address this problem.
Piston Rings critical quality
The piston might be a fairly loose fit in the cylinder. If it were a tight fit, it would expand as it got hot and might stick tight in the cylinder. If a piston sticks (seizes) it could cause serious damage to the engine. On the other hand, if there is too much clearance between the piston and cylinder walls, much of the pressure from the burning gasoline
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