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)
SB Chev 305 Sprint Car 3.776 bore, 3.500 Stoke, 5.700 Rod, 1.550 CH, Vert Gas Ports Flat Top 9:7 CR 1mm,1mm, 2mm rings - Lefts & Rights (CP Bullets BCRE2031-040)
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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1520-040 |
|
Bore (in) |
4.165 |
|
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 |
436 |
|
Piston Weight |
492 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | 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) |
|---|---|
| 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 BCRE1520-040 pistons?
For the BCRE1520-040 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 application.
What compression ratio can I expect with the BCRE1520-040 pistons?
The BCRE1520-040 pistons are designed to achieve a compression ratio of approximately 15.1:1 when used with a 64cc cylinder head. Ensure your engine's specifications align for optimal performance.
What type of ring gaps should I set for the BCRE1520-040 pistons?
For the BCRE1520-040 pistons, set the top ring gap around 0.018" to 0.020" and the second ring gap around 0.020" to 0.022". Adjustments may be necessary based on your specific application and operating conditions.
Are the BCRE1520-040 pistons suitable for high boost applications?
Yes, the BCRE1520-040 pistons are designed for performance applications and can handle high boost levels. However, ensure proper tuning, fuel quality, and engine assembly to maintain reliability under increased pressure.
What is the weight of the BCRE1520-040 pistons and how does it affect performance?
The BCRE1520-040 pistons weigh 492 grams each. While lighter pistons can improve throttle response and reduce reciprocating mass, ensure that your engine's rotating assembly is balanced to avoid vibrations and ensure longevity.
