Small Block Chevy 23° N20 4.135 bore, 4.00 stroke 6.00 rod, 1.00 ch 11.2cc dome 14.8 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1520-010)
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)
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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1522-020 |
|
Bore (in) |
4.145 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.125 |
|
Head Type |
23 * Most Heads |
|
Head CC |
64 |
|
Dome / Dish Height |
0.48 |
|
Dom/Dish CC |
11.2 |
|
Compression Ratio |
14.2 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
405 |
|
Piston Weight |
511 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | 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) |
|---|---|
| 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 BCRE1522-020 pistons?
The BCRE1522-020 pistons are designed for a compression ratio of approximately 14.2:1 when used with a 64cc cylinder head. Ensure that your engine's setup, including camshaft and fuel type, is compatible with this high compression for optimal performance.
What type of valve reliefs do the BCRE1522-020 pistons have?
The BCRE1522-020 pistons feature two valve reliefs, which are designed to accommodate most common camshaft profiles in Small Block Chevy applications. Always verify clearance with your specific setup to avoid interference.
What is the significance of the gas ports in the BCRE1522-020 pistons?
The gas ports in the BCRE1522-020 pistons help improve ring seal and reduce blow-by, particularly in high-performance applications. This feature is beneficial for maintaining consistent power and efficiency under high RPM conditions.
What is the weight of the BCRE1522-020 pistons, and how does it affect engine balance?
The BCRE1522-020 pistons weigh 511 grams each. This weight should be considered when balancing the rotating assembly, as it can influence engine dynamics and overall performance. Ensure that the crankshaft and conrods are matched accordingly.
What bore clearance should be used with the BCRE1522-020 pistons?
Bore clearance for the BCRE1522-020 pistons should be set according to the engine builder's specifications, typically around 0.0030” to 0.0040” for forged pistons. Always verify with your specific application and machining tolerances.
