Ford SB 5.4L 2V Bore 3.572 CH 1.320 Stroke 4.165 Rod 6.657 CR 9 Dish 53 Head (CP Bullets BF9855-020)
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|
Make |
Ford |
|
Engine Type |
V8 Modular 5.4L, Dish 2V |
|
Part Number |
BF9855-020 |
|
Bore (in) |
3.572 |
|
Stroke (in) |
4.165 |
|
Rod Length (in) |
6.657 |
|
Comp Height |
1.32 |
|
Head Type |
Stock 2V |
|
Head CC |
53 |
|
Dome / Dish Height |
0.2 |
|
Dom/Dish CC |
-21.3 |
|
Compression Ratio |
9 |
|
Pin |
.866 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
N/A |
|
Cubic Inch |
334 |
|
Piston Weight |
373 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Ford SB 5.4L 2V Bore 3.572 CH 1.320 Stroke 4.165 Rod 6.657 CR 9 Dish 53 Head (CP Bullets BF9855-020) |
|---|---|
| Brands | CP Carrillo |
| Engine | Ford V8 |
| Make | Ford |
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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 BF9855-020 pistons?
For the BF9855-020 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always consult with your engine builder for specific requirements based on your application and machining tolerances.
What compression ratio can I expect with the BF9855-020 pistons?
The BF9855-020 pistons are designed to achieve a compression ratio of 9:1 when used with stock 2V heads that have a 53cc chamber. Actual compression may vary based on head gasket thickness and any additional machining done to the block or heads.
What is the weight of the BF9855-020 pistons and how does it affect performance?
The BF9855-020 pistons weigh 373 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure that your entire rotating assembly is balanced to maintain reliability and performance.
Are there specific machining requirements for the BF9855-020 pistons?
Yes, the BF9855-020 pistons may require specific machining for correct fitment, including honing the cylinder bores to achieve the proper clearance and ensuring the ring lands are within spec. Always verify with your engine builder for precise machining needs.
What type of rings are compatible with the BF9855-020 pistons?
The BF9855-020 pistons come with a ring thickness specification of 1.5mm x 1.5mm x 3.0mm. Ensure that you use compatible rings designed for these dimensions to maintain optimal sealing and performance.
