Big Block Chevy SR20 N/A 4.615 bore, 4.250 stroke, 6.535 rod, 1.120 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5326-115A)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCSRE5326-115A |
|
Bore (in) |
4.615 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.12 |
|
Head Type |
SR20 |
|
Head CC |
95 |
|
Dome / Dish Height |
0.45 |
|
Dom/Dish CC |
24.8 |
|
Compression Ratio |
15 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1.0 x 1.0 x 3.0mm |
|
VR Depth |
-.355 / -.020 |
|
Cubic Inch |
569 |
|
Piston Weight |
606 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's with Slant |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy SR20 N/A 4.615 bore, 4.250 stroke, 6.535 rod, 1.120 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5326-115A) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| 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 BBCSRE5326-115A pistons?
The BBCSRE5326-115A pistons are designed for a compression ratio of 15:1. This high compression is suitable for naturally aspirated applications, but ensure your engine is built to handle this level of compression with appropriate fuel quality and tuning.
What are the specific machining requirements for the BBCSRE5326-115A pistons?
When using the BBCSRE5326-115A pistons, ensure the bore clearance is set correctly according to your engine's specifications. The ring gaps should also be tailored to your application, considering the expected RPM and power levels. Always consult with your engine builder for precise machining requirements.
What type of rings come with the BBCSRE5326-115A pistons?
The BBCSRE5326-115A pistons come with 1.0mm x 1.0mm x 3.0mm rings. These are designed for performance applications, providing a good balance between sealing and durability. Ensure proper ring gap settings for optimal performance.
What is the weight of the BBCSRE5326-115A pistons and how does it affect engine performance?
The BBCSRE5326-115A pistons weigh 606 grams each. While this weight is typical for high-performance pistons, it's important to consider the overall rotating assembly balance. Lighter pistons can improve throttle response, but ensure the entire assembly is balanced for reliability.
Are there any specific requirements for valve reliefs with the BBCSRE5326-115A pistons?
The BBCSRE5326-115A pistons feature two valve reliefs with a slant design. When installing these pistons, verify that your cylinder heads and camshaft profile are compatible to avoid any potential interference. Proper clearance checks are essential for reliable engine operation.
