fits model: Rmk, 700. make: Polaris. year: 1997.

( Manufacturer Part Number: UNKNOW )
The Polaris RMK 700 snowmobile engine is a powerful and reliable drivetrain that powers the iconic RMK series of snowmobiles. In this product description, we will delve deeper into the key components of this engine, focusing on the essential parts of the crankshaft and cylinder head.
Crankshaft:The crankshaft is located in the bottom of the engine and converts reciprocating motion of the pistons into rotational motion, which turns the track of the snowmobile. The Polaris RMK 700 engine uses a robust crankshaft designed for the demanding conditions of snowmobiling. The crankshaft features cast iron construction, ensuring durability and strength. It is precisely balanced to minimize vibration and enhance the overall performance of the engine. Moreover, the crankshaft utilizes a single main bearing and five journal bearings to support the heavy loads encountered during operation.
Cylinder Head:Situated above the crankshaft is the Polaris RMK 700 engine's cylinder head, which houses the combustion chamber and cylinder liners. Built from lightweight aluminum, this component plays a crucial role in optimizing engine efficiency and power output. The cylinder head consists of two spark plugs, placed in individual cylinder bores, for efficient fuel combustion. It also incorporates a water jacket, which keeps coolant flowing around the cylinder walls to maintain optimal engine temperature. Polaris engineers design the cylinder head with four valves intake and exhaust which ensure optimal engine breathing and maximize power output in various riding conditions.
Both components - the crank shaft and cylinder head - collectively contribute to the exceptional performance, durability, and reliability of the Polaris RMK 700 snowmobile engine. Replacing a faulty crank shaft or cylinder head can help restore the engine's performance and ensure a continued enjoyable riding experience. Remember that repairing or replacing these parts is best performed by professional mechanics to ensure a proper installation and the best possible outcome.
Buying a used 97 Polaris RMK 700 engine with an unknown crankshaft, cylinder head can have both advantages and disadvantages. Here are some potential pros and cons:
Pros:1. Potential for savings: Buying a used engine can be more cost-effective compared to purchasing a new one, especially if you are on a budget or if the price of a new engine is significantly higher.
2. Availability: You may be able to find a used engine more easily and quickly than a new one, especially if the engine is a common model.
3. Possibility of finding a high-quality used engine: If you are able to find a well-maintained and properly rebuilt used engine, it can perform as well as a new one, or even better if it has aftermarket upgrades.
Cons:1. Unknown condition: Since the crankshaft and cylinder head are unknown, you may be taking a risk on the quality of the engine. It could have been worn down or damaged, or it could need significant repairs or rebuilding.
2. Potential for compatibility issues: A used engine may not be compatible with your snowmobile if it has been modified or if there are differences between the make and model of the used engine and your snowmobile.
3. Risk of hidden problems: Since you are buying used, there is a risk that there could be hidden problems with the engine that are not apparent until after you've purchased it. This could lead to unexpected repair costs or downtime.
Conclusion:Buying a used 97 Polaris RMK 700 engine with an unknown crankshaft and cylinder head can be a risky proposition. While there are potential cost savings, the unknown condition and potential compatibility issues make it a gamble. If you do choose to go this route, be sure to thoroughly inspect the engine before purchasing it, ideally with the help of a mechanic or somebody knowledgeable about Polaris engines. If possible, try to find a trusted seller or repair shop that can provide you with a warranty or guarantee on the engine.
Recommendation:If possible, I would recommend considering other options before purchasing a used engine with unknown components. You could try contacting Polaris or a local snowmobile dealership to check if a new or rebuilt engine is available for purchase, or you could try to find a salvage or junk yard Polaris RMK 700 with a known good engine and use the parts you need from that. Alternatively, you could consider seeking the help of a skilled mechanic or engine builder to help you evaluate the condition of the used engine and assess the risk before making a purchase.
The miles were 2100 hundred. Came out of a running 97 Rmk track. Still was a good running motor. The comp on motor was around 150psi.