SBF 412/438ci CHI 3V Kaase Bore 4.125 CH 1.250 Stroke 3.875 Rod 6.000 CR 11.7 Dish Head 50cc (CP Bullets BF6152-STD)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6152-STD |
|
Bore (in) |
4.125 |
|
Stroke (in) |
3.875 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.25 |
|
Head Type |
CHI 3V KAASE |
|
Head CC |
50 |
|
Dome / Dish Height |
-0.064 |
|
Dom/Dish CC |
-14.4 |
|
Compression Ratio |
11.7 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / -.100 |
|
Cubic Inch |
414 |
|
Piston Weight |
488 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | SBF 412/438ci CHI 3V Kaase Bore 4.125 CH 1.250 Stroke 3.875 Rod 6.000 CR 11.7 Dish Head 50cc (CP Bullets BF6152-STD) |
|---|---|
| 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 BF6152-STD pistons?
For the BF6152-STD pistons, a typical bore clearance of 0.0035" to 0.0045" is recommended. However, always confirm with your engine builder as specific clearances may vary based on the application and machining tolerances.
What compression ratio can I expect with the BF6152-STD pistons?
The BF6152-STD pistons are designed to achieve a compression ratio of 11.7:1 when used with CHI 3V Kaase heads with a 50cc chamber. Ensure that your engine's overall setup aligns with this ratio for optimal performance.
What type of ring gaps should I use for the BF6152-STD pistons?
For the BF6152-STD pistons, the recommended ring gaps are typically 0.020" for the top rings and 0.022" for the second rings. However, adjustments may be necessary based on your specific application and intended use.
Do I need to machine the piston for valve reliefs?
The BF6152-STD pistons come with two valve reliefs designed for compatibility with typical Ford V8 applications. However, verify the clearance with your specific camshaft and head configuration to ensure proper fitment.
What is the weight of the BF6152-STD pistons and how does it affect performance?
The BF6152-STD pistons weigh 488 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure that your connecting rods and crankshaft are rated for the intended RPM and power levels.
