Small Block Chevy 23° 4.125 bore, 6.00 rod, 1.00 ch -21cc dish 10.8 cr, 1.2mm,1.2mm, 3mm rings - Lefts & Rights (CP Bullets BCR1130-STD)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCR1130-STD |
|
Bore (in) |
4.125 |
|
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 |
10.8 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.310 / -.250 |
|
Cubic Inch |
428 |
|
Piston Weight |
392 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy 23° 4.125 bore, 6.00 rod, 1.00 ch -21cc dish 10.8 cr, 1.2mm,1.2mm, 3mm rings - Lefts & Rights (CP Bullets BCR1130-STD) |
|---|---|
| Brands | CP Carrillo |
| Engine | SB Chevrolet / Holden |
| 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-STD pistons?
For the BCR1130-STD pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on the specific engine build and operating conditions.
What type of ring gaps should I set for the BCR1130-STD pistons?
For the BCR1130-STD pistons, the recommended ring gaps are generally 0.020" for the top rings and 0.022" for the second rings. Adjustments may be necessary based on the intended use and boost levels.
Can I use the BCR1130-STD pistons with aftermarket cylinder heads?
Yes, the BCR1130-STD pistons are designed to work with all 23-degree Small Block Chevy heads, including aftermarket options. Ensure that the valve reliefs are compatible with your specific head design.
What is the significance of the -21cc dish on the BCR1130-STD pistons?
The -21cc dish on the BCR1130-STD pistons helps achieve a compression ratio of 10.8:1 when paired with a 58cc combustion chamber. This dish volume is crucial for balancing performance and reliability in your engine build.
What is the weight of the BCR1130-STD pistons, and how does it affect performance?
The BCR1130-STD pistons weigh 392 grams each. Lighter pistons can improve engine response and reduce stress on the rotating assembly, but it's essential to balance them with the rest of the components in your engine for optimal performance.
