Harley Twin Cam, 103 cu in,3.880 bore, 4.375 stroke, 10.25:1
Please allow up to 2 weeks for delivery. If it is any longer, we will contact you.
Feel free to contact us to confirm delivery time before you order.
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
Harley Twin Cam, 103 cu in,3.880 bore, 4.375 stroke, 10.25:1
|
Make |
Harley Davidson |
|
Engine Size |
103 CI |
|
Model |
Twin Cam |
|
Bore (in) |
3.88 |
|
Stroke (in) |
4.375 |
|
Comp Ratio |
10.25:1 |
|
Dome CC |
1.4 |
|
Comp Height |
1.092 |
|
Piston Part Number |
M5024 |
|
Conrod Part Nmber |
PSR6161 |
|
Pint Part Number |
927-2500-15CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
RS111A-3880-0 |
|
Shelf (RPO) or Made to Order (MTO) |
MTO |
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 | Harley Twin Cam, 103 cu in,3.880 bore, 4.375 stroke, 10.25:1 |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
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 is the recommended piston to cylinder clearance for the M5024 pistons?
For the M5024 pistons, it's crucial to follow the manufacturer's specifications for piston to cylinder clearance. Typically, a clearance of 0.0025" to 0.0035" is recommended, but this can vary based on your specific engine build and intended use. Always consult the supplied instructions and adjust according to your engine's requirements.
What type of rings are included with the M5024 piston kit?
The M5024 piston kit includes RS111A-3880-0 ring sets. These rings are designed to provide optimal sealing and performance. Ensure you follow the manufacturer's guidelines for installation and ring gap settings to achieve the best results.
Can I use the M5024 pistons with a stock Harley Davidson Twin Cam engine?
Yes, the M5024 pistons can be used with a stock Harley Davidson Twin Cam engine, but modifications may be necessary to accommodate the increased compression ratio of 10.25:1. It's essential to evaluate your engine's current setup, including fuel quality and tuning, to ensure reliability and performance.
What is the weight of the M5024 pistons and how does it affect performance?
The M5024 pistons are designed to be lightweight, which aids in reducing reciprocating mass and improving throttle response. While the exact weight can vary, a lighter piston generally contributes to better performance, especially at higher RPMs. Balancing with the full rotating assembly is crucial to maintain engine harmony.
What is the significance of the dome CC for the M5024 pistons?
The dome CC of 1.4 for the M5024 pistons plays a critical role in determining the engine's compression ratio and combustion characteristics. This design helps optimise power output while ensuring compatibility with the Twin Cam engine's combustion chamber. Always consider this aspect when tuning your engine.
