Harley Twin Cam, 98 cu in, 3.937 bore, 4.000 stroke, 7.667 rod, 10:25:1 CR, 85cc head
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Harley Twin Cam, 98 cu in, 3.937 bore, 4.000 stroke, 7.667 rod, 10:25:1 CR, 85cc head
|
Make |
Harley Davidson |
|
Engine Size |
98 CI |
|
Model |
Twin Cam |
|
Bore (in) |
3.937 |
|
Stroke (in) |
4 |
|
Comp Ratio |
10.25:1 |
|
Dome CC |
6 |
|
Comp Height |
1.265 |
|
Piston Part Number |
BHM98-6 |
|
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, 98 cu in, 3.937 bore, 4.000 stroke, 7.667 rod, 10:25:1 CR, 85cc head |
|---|---|
| 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 BHM98-6 pistons?
The recommended bore clearance for the BHM98-6 pistons is typically between 0.0025" to 0.0035". However, it is essential to check the specific requirements based on your engine's build and tolerances.
What type of ring end gap should I use for the BHM98-6 pistons?
For the BHM98-6 pistons, the ring end gap should be set according to the manufacturer's specifications provided with the pistons. Generally, a gap of 0.004" to 0.005" per inch of bore diameter is a good starting point, but verify with the supplied instructions.
What is the compression height of the BHM98-6 pistons?
The compression height of the BHM98-6 pistons is 1.265 inches. Ensure that this measurement aligns with your connecting rods and overall engine design for optimal performance.
Are the BHM98-6 pistons suitable for high-performance applications?
Yes, the BHM98-6 pistons are designed for high-performance applications, featuring a compression ratio of 10.25:1 and made from high-strength 2618 alloy. However, reliability will depend on proper machining, clearances, and tuning.
What is included in the BHM98-6 piston kit?
The BHM98-6 piston kit includes two pistons, ring sets, wrist pins, and clips. Ensure all components are inspected for quality before installation.
