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 4.165 bore, 4.00 stroke 6.00 rod, 1.00 ch 11.2cc dome 14.9 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1520-040)
Small Block Chevy 23° N20 4.155 bore, 4.00 stroke 6.00 rod, 1.00 ch 11.2cc dome 14.9 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1520-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1520-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1 |
|
Head Type |
23 * Most Heads |
|
Head CC |
64 |
|
Dome / Dish Height |
0.48 |
|
Dom/Dish CC |
11.2 |
|
Compression Ratio |
15.1 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
434 |
|
Piston Weight |
488 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy 23° N20 4.155 bore, 4.00 stroke 6.00 rod, 1.00 ch 11.2cc dome 14.9 cr, 043,043, 3mm rings - Lefts & Rights (CP Bullets BCRE1520-030) |
|---|---|
| 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 BCRE1520-030 pistons?
The BCRE1520-030 pistons are designed to achieve a compression ratio of approximately 15.1 when used with a 64cc cylinder head. Ensure that your engine's setup, including head gasket thickness and combustion chamber volume, is accounted for to achieve the desired compression.
What are the specific ring gap recommendations for the BCRE1520-030 pistons?
For the BCRE1520-030 pistons, the ring gaps should be set according to the application and intended use. A common starting point for performance applications is 0.0045" to 0.0050" per inch of bore, but always consult your engine builder for specific requirements based on your setup.
What machining considerations should I keep in mind when installing BCRE1520-030 pistons?
When installing BCRE1520-030 pistons, ensure that the bore is properly honed to match the 4.155" diameter and that the piston-to-wall clearance is set according to the manufacturer's specifications. Additionally, check that the ring lands are clean and free of debris before installation.
Can I use these pistons with any Small Block Chevy head?
The BCRE1520-030 pistons are designed to work with most 23-degree Small Block Chevy heads. However, verify that the head's combustion chamber volume and design are compatible with the piston specifications to avoid clearance issues.
What is the weight of the BCRE1520-030 pistons, and how does it affect performance?
The BCRE1520-030 pistons weigh 488 grams each. While lighter pistons can improve engine response and reduce inertia, ensure that your rotating assembly is balanced properly to maintain reliability and performance at higher RPMs.
