2017-2022 Harley Milwaukee Eight 120 cu in FT, 4.180 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H -1.2cc
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2017-2022 Harley Milwaukee Eight 120 cu in FT, 4.180 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H -1.2cc
|
Make |
Harley Davidson |
|
Engine Size |
120 CI |
|
Model |
Milwaukee 8 2017-2022 |
|
Bore (in) |
4.18 |
|
Stroke (in) |
4.375 |
|
Comp Ratio |
11.0:1 |
|
Dome CC |
-1.2 |
|
Comp Height |
1.143 |
|
Piston Part Number |
BHM8120-2 |
|
Conrod Part Nmber |
PSR10087 |
|
Pint Part Number |
927-2250-18CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
1-MG10-4180 2-MS20-4180-THG 3-M38-4180 |
|
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 | 2017-2022 Harley Milwaukee Eight 120 cu in FT, 4.180 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H -1.2cc |
|---|---|
| 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 bore clearance for the BHM8120-2 pistons?
The recommended bore clearance for the BHM8120-2 pistons should be determined by the engine builder based on the specific application and intended use. Generally, a clearance of 0.0025" to 0.0035" is a good starting point for performance applications, but always verify with your specific setup.
What type of rings are included with the BHM8120-2 piston kit?
The BHM8120-2 piston kit includes a set of three rings: one oil control ring (1-MG10-4180), one second compression ring (2-MS20-4180-THG), and one top compression ring (3-M38-4180). Ensure proper installation and follow the manufacturer's guidelines for ring gap settings.
Can the BHM8120-2 pistons be used with a stock Harley Milwaukee Eight engine?
Yes, the BHM8120-2 pistons can be used with a stock Harley Milwaukee Eight engine, but modifications may be required for optimal performance. Ensure that the engine is properly tuned and that the compression ratio of 11.0:1 is suitable for your fuel and application.
What is the significance of the -1.2cc dome volume on the BHM8120-2 pistons?
The -1.2cc dome volume on the BHM8120-2 pistons contributes to the overall compression ratio of the engine. This negative dome volume helps increase the compression ratio, which can enhance power output, but it is essential to ensure that the engine's combustion chamber and fuel quality can accommodate this increase.
What are the benefits of the double forced pin oilers in the BHM8120-2 pistons?
The double forced pin oilers in the BHM8120-2 pistons provide improved lubrication to the wrist pin area, reducing friction and wear. This feature enhances reliability and performance, especially under high-load conditions typical in performance applications.
