Chevrolet SB 2.2 Dome 408, Bore 4.135, CH 1.100, Stroke 3.800, Rod 6.000 - Lefts & Rights (CP Pistons S2522)

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|
Make |
Chevrolet |
|
Engine Type |
SB2.2 Dome |
|
Part Number |
S2522 |
|
Bore (in) |
4.135 |
|
Stroke (in) |
3.8 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.1 |
|
Dome / Dish Height |
0.17 |
|
Dom/Dish CC |
1.1 |
|
Pin |
.927 x 2.750 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth Int/Exh |
-.275 / -.080 |
|
Piston Weight |
450 |
|
Gas Port |
Yes |
|
Capacity |
408 |
|
Shlef (RPO) or Made to Order (MTO) |
MTO |
Dedicated right and left forgings; Pin-fitting included at no cost; Chamfered pins and wire locks included; Accumulator and anti-detonation grooves included; Double pin oilers, force fed from oil ring; Radius valve reliefs; Domes may be cut to a flat top ; Balanced to +/- 1 gram; Pick lock grooves for easy lock removal; designed for back-cut rings; Custom skirt cam and barrel shapes; Fully CNC Machined. Notes: D – Rail Support included, G – Supplied with Wire Locks.
| Product Name | Chevrolet SB 2.2 Dome 408, Bore 4.135, CH 1.100, Stroke 3.800, Rod 6.000 - Lefts & Rights (CP Pistons S2522) |
|---|---|
| Brands | CP Carrillo |
| Engine | 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 S2522 pistons?
For the S2522 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on the specific application, operating conditions, and the builder's preference.
What type of ring gaps should I use with the S2522 pistons?
The ring gaps for the S2522 pistons should be set according to the intended use. For high-performance applications, consider wider gaps to accommodate thermal expansion, typically around 0.020" for the top ring and 0.018" for the second ring. Always consult with your engine builder for specific recommendations.
What is the weight of the S2522 pistons and how does it affect my engine?
The S2522 pistons weigh 450 grams each. This weight is suitable for high-performance applications, but it's essential to balance the entire rotating assembly to ensure optimal performance and reliability. Consider the impact of piston weight on engine dynamics and RPM range.
Can the dome height of the S2522 pistons be modified?
Yes, the dome height of the S2522 pistons can be cut to a flat top if desired. This modification may affect compression ratios, so it's crucial to recalculate the compression ratio and adjust other engine parameters accordingly.
What is the significance of the gas ports in the S2522 pistons?
The gas ports in the S2522 pistons are designed to improve ring seal and reduce blow-by by allowing combustion gases to pressurise the ring pack. This feature is particularly beneficial in high-performance applications where maintaining optimal cylinder pressure is critical.