Chevy 434ci ASCS 4.155 Bore 1.000 CH 14.4:1 CR - Lefts & Rights (CP Bullets BCR1215-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCR1215-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1 |
|
Head Type |
ASCS |
|
Head CC |
64 |
|
Dome / Dish Height |
0.275 |
|
Dom/Dish CC |
8 |
|
Compression Ratio |
14.5 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.335 / SP |
|
Cubic Inch |
434 |
|
Piston Weight |
449 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy 434ci ASCS 4.155 Bore 1.000 CH 14.4:1 CR - Lefts & Rights (CP Bullets BCR1215-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev |
| Make | GM |
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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 BCR1215-030 pistons?
For the BCR1215-030 pistons, a typical bore clearance is around 0.0030" to 0.0035". However, this can vary based on the specific engine build and application, so it's essential to consult with your engine builder for precise measurements.
What compression ratio can I expect with the BCR1215-030 pistons?
The BCR1215-030 pistons are designed to achieve a compression ratio of 14.5:1 when used with a compatible cylinder head that has a 64cc combustion chamber. Ensure that all components are matched correctly to maintain this ratio.
What type of ring set is compatible with the BCR1215-030 pistons?
The BCR1215-030 pistons use a ring thickness of 1.2mm for both the top and second rings, and a 3.0mm oil ring. It's crucial to select a ring set that matches these dimensions for optimal performance.
Are the BCR1215-030 pistons suitable for high RPM applications?
Yes, the BCR1215-030 pistons are designed for high-performance applications and can handle high RPMs. However, reliability at elevated RPMs will depend on proper machining, clearances, and tuning.
What is the weight of the BCR1215-030 pistons, and how does it affect performance?
The BCR1215-030 pistons weigh 449 grams each. While lighter pistons can improve throttle response and reduce reciprocating mass, it's essential to balance them with the rest of the rotating assembly for optimal performance.
