Big Block Chevy SR20 N/A 4.600 bore, 4.375 stroke, 6.535 rod, 1.070 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5325-100A)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCSRE5325-100A |
|
Bore (in) |
4.6 |
|
Stroke (in) |
4.375 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.07 |
|
Head Type |
SR20 |
|
Head CC |
95 |
|
Dome / Dish Height |
0.45 |
|
Dom/Dish CC |
24.5 |
|
Compression Ratio |
15 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1.0 x 1.0 x 3.0mm |
|
VR Depth |
-.355 / -.020 |
|
Cubic Inch |
582 |
|
Piston Weight |
588 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's with Slant |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy SR20 N/A 4.600 bore, 4.375 stroke, 6.535 rod, 1.070 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5325-100A) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
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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 BBCSRE5325-100A pistons?
For the BBCSRE5325-100A pistons, a typical bore clearance of 0.0035" to 0.0045" is recommended. However, always consult with your engine builder as specific clearances may vary based on your application and machining tolerances.
What compression ratio can I expect with the BBCSRE5325-100A pistons?
The BBCSRE5325-100A pistons are designed to achieve a compression ratio of approximately 15:1 when used with a 95cc cylinder head. Ensure that your engine is properly assembled and tuned to handle this compression level.
What type of ring gaps should I set for the 1mm, 1mm, 3mm rings on these pistons?
For the 1mm, 1mm, and 3mm rings on the BBCSRE5325-100A pistons, a general guideline is to set the top ring gap at 0.020" and the second ring gap at 0.018". The oil ring gap should be set at 0.025". Adjustments may be necessary based on your specific engine setup and intended use.
Can I use these pistons with a different stroke or rod length?
The BBCSRE5325-100A pistons are specifically designed for a 4.375" stroke and a 6.535" rod length. Using them with different stroke or rod lengths may lead to incorrect compression height and potential interference issues, so it's best to stick to the specified dimensions.
What is the significance of the gas porting on the BBCSRE5325-100A pistons?
The gas porting on the BBCSRE5325-100A pistons helps improve ring seal and reduce blow-by, especially at high RPMs. This feature is beneficial for performance applications where maintaining cylinder pressure is critical for power output.
