Harley Shovelhead, 80 cu in, 3.528 bore, 4.250 stroke, 8.5:1
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Harley Shovelhead, 80 cu in, 3.528 bore, 4.250 stroke, 8.5:1
|
Make |
Harley Davidson |
|
Engine Size |
80 CI |
|
Model |
Shovel Head |
|
Bore (in) |
3.528 |
|
Stroke (in) |
4.25 |
|
Comp Ratio |
8.5:1 |
|
Dome CC |
38 |
|
Comp Height |
1.3 |
|
Piston Part Number |
M5046 |
|
Conrod Part Nmber |
N/A |
|
Pint Part Number |
791-2500-14CP1C |
|
Locks Part Number |
787x050 SWL |
|
Rings |
RS1227-3525-5 |
|
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 Shovelhead, 80 cu in, 3.528 bore, 4.250 stroke, 8.5:1 |
|---|---|
| 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 is the recommended piston to cylinder clearance for the M5046 pistons?
For the M5046 pistons, a typical piston to cylinder clearance is around 0.0025" to 0.0035". However, this can vary based on the specific engine build and operating conditions, so it's essential to consult the supplied instructions and adjust according to your engine's requirements.
What is the ideal ring end gap for the M5046 pistons?
The ideal ring end gap for the M5046 pistons should be set according to the supplied instructions, typically around 0.004" to 0.005" per inch of bore. Ensure to measure accurately and adjust based on your specific engine's performance goals and usage.
Can I use the M5046 pistons with a different stroke or bore size?
The M5046 pistons are specifically designed for an 80 cu in Harley Shovelhead engine with a 3.528" bore and 4.250" stroke. Using them with different bore or stroke sizes may lead to performance issues and is not recommended without proper modifications.
What type of fuel is recommended for engines using M5046 pistons?
Engines using M5046 pistons, which have a compression ratio of 8.5:1, typically perform best on premium unleaded fuel. However, always consider your specific tuning and engine setup, as fuel quality can significantly affect performance and reliability.
What is the weight of the M5046 pistons, and how does it affect performance?
The M5046 pistons are designed to be lightweight, which helps reduce reciprocating mass and improves engine responsiveness. While the exact weight can vary, a lighter piston generally contributes to better acceleration and higher RPM capabilities, but ensure proper balancing with the full rotating assembly.
