Harley Twin Cam, 107 cu in, 3.937 bore, 4.375 stroke, 7.667 rod, 10.25:1 CR, 85cc head
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Harley Twin Cam, 107 cu in, 3.937 bore, 4.375 stroke, 7.667 rod, 10.25:1 CR, 85cc head
|
Make |
Harley Davidson |
|
Engine Size |
107 CI |
|
Model |
Twin Cam |
|
Bore (in) |
3.937 |
|
Stroke (in) |
4.375 |
|
Comp Ratio |
10.25:1 |
|
Dome CC |
-1.6 |
|
Comp Height |
1.085 |
|
Piston Part Number |
BHM107FT |
|
Conrod Part Nmber |
PSR6161 |
|
Pint Part Number |
927-2250-15CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
RS1MG660-3937-THG |
|
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, 107 cu in, 3.937 bore, 4.375 stroke, 7.667 rod, 10.25:1 CR, 85cc head |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
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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 BHM107FT pistons?
The BHM107FT pistons are designed for a compression ratio of 10.25:1, which is optimal for performance in the Harley Twin Cam 107 engine. Ensure that your engine's setup, including cylinder head volume, matches this specification for best results.
What material are the BHM107FT pistons made from?
These pistons are forged from high strength 2618 alloy, which provides excellent durability and performance under high-stress conditions typical of performance Harley engines.
What is included in the BHM107FT piston kit?
The BHM107FT kit includes two pistons, ring sets, wrist pins, and clips, providing a complete solution for your rebuild or performance upgrade.
What machining considerations should I keep in mind when installing the BHM107FT pistons?
When installing the BHM107FT pistons, ensure that you follow the recommended piston-to-cylinder clearance and ring end gap specifications provided in the instructions. Proper honing of the cylinder bores may be necessary to achieve the correct clearances.
Are the BHM107FT pistons suitable for high-performance applications?
Yes, the BHM107FT pistons are designed for maximum performance and reliability, making them suitable for high-performance applications in Harley Twin Cam engines. However, ensure that your engine is properly tuned and that all components are compatible with the intended power levels.
