Chevrolet 18° Flat Top 400 Chevrolet with Gas Ports 414, Bore 4.125, CH 1.062, Stroke 3.875, Rod 6.000 - Lefts & Rights (CP Pistons S2176)
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|
Make |
Chevrolet |
|
Engine Type |
18˚ Flat Top 400 Chevy With Gas Ports |
|
Part Number |
S2176 |
|
Bore (in) |
4.125 |
|
Stroke (in) |
3.875 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.062 |
|
Dome / Dish Height |
F.T |
|
Dom/Dish CC |
-7.2 |
|
Pin |
.927 x 2.750 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth Int/Exh |
-.330 / SP |
|
Piston Weight |
536 |
|
Gas Port |
Yes |
|
Capacity |
414 |
|
Shlef (RPO) or Made to Order (MTO) |
MTO |
Dedicated right and left forgings; Wrist pins and pin-fitting included at no cost; Accumulator groove included; Double pin oilers, force fed from oil ring; Designed for back cut rings; Chamfered ring and wire locks; Balanced to +/- 1 gram ; Pick lock grooves for easy lock removal; Fully CNC Machined. Notes: D – Rail Support included , G – Supplied with Wire Locks
| Product Name | Chevrolet 18° Flat Top 400 Chevrolet with Gas Ports 414, Bore 4.125, CH 1.062, Stroke 3.875, Rod 6.000 - Lefts & Rights (CP Pistons S2176) |
|---|---|
| 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 S2176 pistons?
For the S2176 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific application and operating conditions, so it's essential to consult with your engine builder for precise measurements.
What type of ring gaps should I use with the S2176 pistons?
The S2176 pistons come with 1.2mm x 1.2mm x 3.0mm rings. A common starting point for ring gaps is 0.004" per inch of bore for the top ring and slightly larger for the second ring. Adjustments may be necessary based on your engine's intended use and boost levels.
Do the S2176 pistons require any specific machining before installation?
Yes, the S2176 pistons may require specific machining such as honing the cylinder bores to achieve the correct clearance. Additionally, ensure that the wrist pin fitment is checked and adjusted as necessary for optimal performance.
What is the weight of the S2176 pistons and how does it affect engine performance?
The S2176 pistons weigh 536 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but it's crucial to balance them with the rest of the rotating assembly to maintain reliability and performance.
What is the significance of the gas ports in the S2176 pistons?
The gas ports in the S2176 pistons enhance combustion efficiency by allowing exhaust gases to flow through the piston, improving ring seal and reducing blow-by. This feature is particularly beneficial in high-performance applications where optimal cylinder pressure is crucial.
