Chevy 434ci All 23° 4.155 Bore 1.000 CH -20.6cc Dish - Lefts & Rights (CP Bullets BCR1130-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCR1130-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1 |
|
Head Type |
All 23 deg heads |
|
Head CC |
58 |
|
Dome / Dish Height |
-0.1195 |
|
Dom/Dish CC |
-20.6 |
|
Compression Ratio |
11 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.310 / -.250 |
|
Cubic Inch |
434 |
|
Piston Weight |
396 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy 434ci All 23° 4.155 Bore 1.000 CH -20.6cc Dish - Lefts & Rights (CP Bullets BCR1130-030) |
|---|---|
| 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 BCR1130-030 pistons?
For the BCR1130-030 pistons, a typical bore clearance of 0.0020" to 0.0025" is recommended. However, this can vary based on the specific application and operating conditions, so it's essential to consult with your engine builder for the best fit.
What compression ratio can I expect with the BCR1130-030 pistons?
The BCR1130-030 pistons are designed to achieve a compression ratio of approximately 11:1 when used with 58cc combustion chambers. Keep in mind that actual compression may vary based on head gasket thickness and other factors.
What is the weight of the BCR1130-030 pistons, and how does it affect performance?
The BCR1130-030 pistons weigh 396 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure that your connecting rods and crankshaft are rated for the intended RPM and power levels.
Are the BCR1130-030 pistons suitable for high boost applications?
The BCR1130-030 pistons can handle moderate boost levels, but their reliability will depend on proper tuning, fuel quality, and engine assembly. Always ensure that your engine is built to withstand the intended boost levels.
What type of valve reliefs do the BCR1130-030 pistons have?
The BCR1130-030 pistons feature two valve reliefs, which are designed to accommodate typical valve sizes in 23-degree small block heads. Ensure that your valve train setup is compatible to avoid interference.
