Small Block Chevy 23° N20 4.125 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-STD)
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 4.135 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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1520-010 |
|
Bore (in) |
4.135 |
|
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 |
14.9 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
430 |
|
Piston Weight |
483 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | 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) |
|---|---|
| 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 bore clearance for the BCRE1520-010 pistons?
For the BCRE1520-010 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on your specific engine build and intended use.
What compression ratio can I expect with the BCRE1520-010 pistons?
The BCRE1520-010 pistons are designed to achieve a compression ratio of approximately 14.9:1 when used with a 64cc cylinder head. Keep in mind that actual compression may vary based on the specific head and gasket used.
Do I need to modify my cylinder heads to use the BCRE1520-010 pistons?
The BCRE1520-010 pistons feature two valve reliefs to accommodate most 23° cylinder heads. However, it's advisable to check for clearance with your specific setup, especially if using high-lift camshafts.
What is the weight of the BCRE1520-010 pistons, and how does it affect performance?
The BCRE1520-010 pistons weigh 483 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure your rotating assembly is balanced to maintain reliability.
What type of rings come with the BCRE1520-010 pistons, and how do I install them?
The BCRE1520-010 pistons come with .043" x .043" x 3.0mm rings. Ensure proper installation by following the manufacturer's guidelines for orientation and gap settings, as these are critical for optimal performance and longevity.
