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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1520-STD |
|
Bore (in) |
4.125 |
|
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 |
428 |
|
Piston Weight |
481 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | 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) |
|---|---|
| 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-STD pistons?
The BCRE1520-STD pistons have a compression ratio of approximately 14.9:1 when used with a 64cc cylinder head. Ensure that your engine is built to handle this level of compression, as it may require high-octane fuel and careful tuning.
What are the specific machining requirements for the BCRE1520-STD pistons?
When installing the BCRE1520-STD pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, the ring gaps should be tailored to your application, considering factors like boost level and RPM.
What type of valve reliefs do the BCRE1520-STD pistons have?
The BCRE1520-STD pistons feature two valve reliefs, which are designed to accommodate most 23-degree Small Block Chevy heads. Always verify clearance with your specific cylinder head and camshaft combination.
What is the weight of the BCRE1520-STD pistons, and how does it affect performance?
The BCRE1520-STD pistons weigh 481 grams each. While lighter pistons can improve throttle response and reduce reciprocating mass, ensure that your engine's rotating assembly is balanced accordingly for optimal performance.
Are gas ports included in the BCRE1520-STD pistons, and what is their purpose?
Yes, the BCRE1520-STD pistons come with gas ports. These ports help improve ring seal and reduce blow-by by allowing combustion gases to pressurise the ring grooves, enhancing performance in high-power applications.
