Small Block Chevy 23° N20 4.145 bore, 3.75 stroke 6.00 rod, 1.125 ch 11.2cc dome 14.8 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1522-020)
Small Block Chevy 23° N20 4.145 bore, 4.00 stroke 6.00 rod, 1.00 ch 11.2cc dome 14.8 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1520-020)
Small Block Chevy 23° N20 4.145 bore, 3.875 stroke 6.00 rod, 1.062 ch 11.2cc dome 14.8 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1521-020)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1521-020 |
|
Bore (in) |
4.145 |
|
Stroke (in) |
3.875 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.062 |
|
Head Type |
23 * Most Heads |
|
Head CC |
64 |
|
Dome / Dish Height |
0.48 |
|
Dom/Dish CC |
11.2 |
|
Compression Ratio |
14.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
418 |
|
Piston Weight |
499 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy 23° N20 4.145 bore, 3.875 stroke 6.00 rod, 1.062 ch 11.2cc dome 14.8 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1521-020) |
|---|---|
| Brands | CP Carrillo |
| Engine | SB Chevrolet / Holden |
| Make | GM |
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 compression ratio for the BCRE1521-020 pistons?
The BCRE1521-020 pistons are designed for a compression ratio of approximately 14.5:1 when used with a 64cc cylinder head. Ensure that your engine's configuration and fuel quality can support this ratio for optimal performance.
What are the specific machining requirements for these pistons?
When installing the BCRE1521-020 pistons, ensure that the bore clearance is set according to the manufacturer's specifications. Additionally, check that the ring gaps are properly set to accommodate the intended operating conditions. It's advisable to consult your engine builder for precise measurements.
What type of valve reliefs do the BCRE1521-020 pistons feature?
The BCRE1521-020 pistons come with two valve reliefs, which are designed to provide clearance for the valves in high-performance applications. Ensure that your cylinder heads and camshaft profile are compatible with these reliefs to prevent interference.
What is the weight of the BCRE1521-020 pistons, and how does it affect performance?
The BCRE1521-020 pistons weigh 499 grams each. While lighter pistons can improve engine response and reduce reciprocating mass, it's essential to balance them with the rest of the rotating assembly to maintain engine reliability and performance.
Are there any specific installation tips for the BCRE1521-020 pistons?
When installing the BCRE1521-020 pistons, ensure that the gas ports are correctly aligned and that the pistons are installed with the correct orientation. Use the recommended lubricant for the piston pins and ensure proper clearance for the wrist pins to avoid binding during operation.
