Ford 434ci 4.155 Bore 1.195 CH 12.5:1 (CP Bullets BF6151-030)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6151-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.195 |
|
Head Type |
CHI 3V KAASE |
|
Head CC |
50 |
|
Dome / Dish Height |
-0.064 |
|
Dom/Dish CC |
-14.4 |
|
Compression Ratio |
12.5 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / -.100 |
|
Cubic Inch |
434 |
|
Piston Weight |
509 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Ford 434ci 4.155 Bore 1.195 CH 12.5:1 (CP Bullets BF6151-030) |
|---|---|
| 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 BF6151-030 pistons?
For the BF6151-030 pistons, a typical bore clearance of 0.0025" to 0.0030" is recommended. However, final clearance should be determined based on the specific application and engine builder's preferences.
What compression ratio can I expect with the BF6151-030 pistons and CHI 3V KAASE heads?
The BF6151-030 pistons provide a compression ratio of 12.5:1 when used with CHI 3V KAASE heads with a 50cc chamber. Ensure that your engine's overall setup, including camshaft and fuel quality, can support this compression for optimal performance.
What is the weight of the BF6151-030 pistons, and how does it affect performance?
The BF6151-030 pistons weigh 509 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure that your connecting rods and crankshaft are rated to handle the intended RPM and power levels.
Are there any specific machining requirements for the BF6151-030 pistons?
Yes, the BF6151-030 pistons may require specific machining for the pin bores and ring grooves to ensure proper fitment and performance. Always consult with your engine builder for precise machining needs based on your engine's specifications.
What type of fuel is recommended for an engine using the BF6151-030 pistons?
Given the 12.5:1 compression ratio of the BF6151-030 pistons, high-octane fuel is recommended to prevent detonation. Ensure your fuel quality matches the performance expectations of your engine setup.
