BH61-925-010 Gen3 Dodge Hemi 4.065" bore, 4.080" stroke, 6.125" rod, .866" pin. '05-'11 6.1L head, -26.8cc, 9.25:1 comp (CP Bullets BH61-925-010)
BH62-950-005 Gen3 Dodge Hemi 4.100" bore, 3.583" stroke, 6.200" rod, .927" pin. '15-Present 6.2 Hellcat head, -6.3cc, 9.50:1 comp (CP Bullets BH62-950-010)
BH61-925-025 Gen3 Dodge Hemi 4.080" bore, 4.080" stroke, 6.125" rod, .866" pin. '05-'11 6.1L head, -27.6cc, 9.25:1 comp (CP Bullets BH61-925-025)
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|
Make |
Dodge |
|
Engine Type |
Hemi |
|
Part Number |
BH61-925-025 |
|
Bore (in) |
4.08 |
|
Stroke (in) |
4.08 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.1 |
|
Head Type |
6.1 Hemi |
|
Head CC |
72.5 |
|
Dome / Dish Height |
-0.182 |
|
Dom/Dish CC |
-27.6 |
|
Compression Ratio |
9.25 |
|
Pin |
.866 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.160 / -.060 |
|
Cubic Inch |
427 |
|
Piston Weight |
461 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | BH61-925-025 Gen3 Dodge Hemi 4.080" bore, 4.080" stroke, 6.125" rod, .866" pin. '05-'11 6.1L head, -27.6cc, 9.25:1 comp (CP Bullets BH61-925-025) |
|---|---|
| Brands | CP Carrillo |
| Engine | Hemi V8 |
| Make | Dodge |
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 bore clearance for the BH61-925-025 pistons?
For the BH61-925-025 pistons, a typical bore clearance is around 0.0030" to 0.0035". However, this can vary based on your specific engine build and intended use, so always consult with your engine builder for the best fitment.
What compression ratio can I expect with the BH61-925-025 pistons?
The BH61-925-025 pistons provide a compression ratio of 9.25:1 when used with a 6.1L Hemi head with a 72.5cc chamber. Keep in mind that actual compression can vary based on factors like head gasket thickness and any machining done to the block or heads.
What type of ring gaps should I set for the BH61-925-025 pistons?
For the BH61-925-025 pistons, ring gaps should be set according to the manufacturer's recommendations, typically around 0.0040" to 0.0050" per inch of bore for the top rings and slightly more for the second rings. Always verify with your engine builder for specific requirements.
Are there any specific machining requirements for the BH61-925-025 pistons?
Yes, the BH61-925-025 pistons may require specific machining for bore clearance and ring land dimensions. It's essential to ensure that the cylinder bores are properly honed and that the ring gaps are set correctly for optimal performance.
What is the weight of the BH61-925-025 pistons, and how does it affect engine balance?
The BH61-925-025 pistons weigh 461 grams each. This weight should be considered when balancing the rotating assembly, as it can impact engine performance and reliability. Ensure that the crankshaft and conrods are balanced with the full assembly for best results.
