Harley Twin Cam, 98 cu in, 3.937 bore, 4.000 stroke, 7.667 rod, 10.75:1 CR, 85cc head
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Harley Twin Cam, 98 cu in, 3.937 bore, 4.000 stroke, 7.667 rod, 10.75:1 CR, 85cc head
|
Make |
Harley Davidson |
|
Engine Size |
98 CI |
|
Model |
Twin Cam |
|
Bore (in) |
3.937 |
|
Stroke (in) |
4 |
|
Comp Ratio |
10.75:1 |
|
Dome CC |
10 |
|
Comp Height |
1.265 |
|
Piston Part Number |
BHM98-10 |
|
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, 10.75:1 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 BHM98-10 pistons?
The recommended bore clearance for the BHM98-10 pistons is typically between 0.0020" and 0.0025". However, final clearance should be determined by the engine builder based on specific application and tolerances.
What type of rings are included with the BHM98-10 piston kit?
The BHM98-10 piston kit includes RS1MG660-3937-THG rings, which are designed for optimal sealing and performance in high-compression applications.
What is the compression ratio of the BHM98-10 pistons and how does it affect performance?
The BHM98-10 pistons have a compression ratio of 10.75:1. This higher compression can improve power output and efficiency, but it requires careful tuning and high-quality fuel to avoid detonation.
What material are the BHM98-10 pistons made from?
The BHM98-10 pistons are forged from high-strength 2618 alloy, which provides excellent durability and performance under high-stress conditions.
Are the BHM98-10 pistons suitable for racing applications?
Yes, the BHM98-10 pistons are designed for maximum performance and reliability, making them suitable for both street and racing applications, provided that the engine is properly built and tuned.
