2014-2018 Yamaha YZ250F 14.0:1 77mm std bore x 53.6mm stroke (250cc), piston kit
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2014-2018 Yamaha YZ250F 14.0:1 77mm std bore x 53.6mm stroke (250cc), piston kit
|
Make |
Yamaha |
|
Engine Size |
250cc |
|
Model |
YZ250F |
|
Year |
2014-2018 |
|
Bore (mm) |
77mm |
|
Comp Ratio |
14.0:1 |
|
Piston Part Number |
MX1090C |
|
Gasket Part Number |
C3549 |
|
Conrod Part Number |
PSR8801A |
|
Pin Part Number |
S630-1650-13C |
|
Locks Part Number |
630x050 SWL |
|
Rings |
CP7700C |
|
Shelf (RPO) or Made to Order (MTO) |
ROP |
Proudly made in the USA by CP Carrillo Pistons!
- Fully CNC machined
- Balanced to +/- 1 gram
- Double forced pin oilers
- Forged from high strength 2618 alloy
- Designed for maximum performance, horsepower and reliability
- Complete kit includes two pistons, ring sets, wrist pins and clips
- Follow ring end gap and piston to cylinder clearances as per the supplied instructions
| Product Name | 2014-2018 Yamaha YZ250F 14.0:1 77mm std bore x 53.6mm stroke (250cc), piston kit |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
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If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What are the recommended piston to cylinder clearances for the MX1090C piston kit?
For the MX1090C piston kit, it's crucial to follow the manufacturer's specifications for piston to cylinder clearances. Typically, these clearances should be set according to the supplied instructions, taking into account the specific application and intended use of the engine.
What type of fuel is recommended for the 14.0:1 compression ratio of the MX1090C piston kit?
Given the 14.0:1 compression ratio, it is advisable to use high-octane fuel to prevent knock and ensure optimal performance. Fuel quality directly impacts reliability and power output, so premium unleaded or race fuel is recommended.
What is the significance of the double forced pin oilers in the MX1090C piston kit?
The double forced pin oilers in the MX1090C piston kit enhance lubrication at the wrist pin, which is critical for reducing wear and maintaining performance under high-stress conditions. This feature helps improve engine longevity and reliability, especially in high-performance applications.
Can I use the MX1090C piston kit with stock conrods?
While the MX1090C piston kit can be used with stock conrods, it's essential to ensure that the conrods are in good condition and capable of handling the increased power and stress associated with the higher compression ratio. Upgrading to performance conrods may be advisable for enhanced reliability.
What machining processes are necessary when installing the MX1090C piston kit?
When installing the MX1090C piston kit, you may need to perform machining processes such as honing the cylinder bore to achieve the correct clearance and ensuring the piston ring gaps are set accurately. Always consult with an experienced engine builder for specific machining requirements based on your engine's condition.
