Harley Twin Cam 120 cu in. 4.060, 4.625 stroke, 10.75 C/R, 1.049 C/H 3.5 dome cc's, SE Heads
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Harley Twin Cam 120 cu in. 4.060, 4.625 stroke, 10.75 C/R, 1.049 C/H 3.5 dome cc's, SE Heads
|
Make |
Harley Davidson |
|
Engine Size |
120 CI |
|
Model |
Twin Cam W/ SE Head |
|
Bore (in) |
4.06 |
|
Stroke (in) |
4.625 |
|
Comp Ratio |
10.75:1 |
|
Dome CC |
3.5 |
|
Comp Height |
1.049 |
|
Piston Part Number |
BHM120R |
|
Conrod Part Nmber |
N/A |
|
Pint Part Number |
927-2500-15CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
1-N16-4060-0 2-N26-4060-OTHG 3-D30-4060-0 |
|
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 | Harley Twin Cam 120 cu in. 4.060, 4.625 stroke, 10.75 C/R, 1.049 C/H 3.5 dome cc's, SE Heads |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
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Disclaimer:
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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 compression ratio for the BHM120R pistons?
The BHM120R pistons are designed for a compression ratio of 10.75:1 when used with SE heads. Ensure that your engine's setup supports this ratio for optimal performance.
What material are the BHM120R pistons made from?
The BHM120R pistons are forged from high strength 2618 alloy, which provides excellent durability and performance under high-stress conditions.
What are the specific bore and stroke dimensions for the BHM120R pistons?
The BHM120R pistons are designed for a bore of 4.060 inches and a stroke of 4.625 inches, making them suitable for the Harley Twin Cam 120 cu in engine.
What is included in the complete kit for the BHM120R pistons?
The complete kit for the BHM120R pistons includes two pistons, ring sets, wrist pins, and clips, providing everything needed for installation.
What machining considerations should I keep in mind when using the BHM120R pistons?
When using the BHM120R pistons, ensure to follow the supplied instructions for piston-to-cylinder clearances and ring end gaps. Proper machining and clearances are crucial for performance and reliability.
