Small Block Ford Most 19° / 20° 4.125 bore, 4.000 stroke 6.200 rod 1.290 CH, +5.77cc Dome 1.2mm , 1.2mm, 3mm rings (CP Bullets BFR6166-STD)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BFR6166-STD |
|
Bore (in) |
4.125 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.2 |
|
Comp Height |
1.29 |
|
Head Type |
Most 19 / 20 deg |
|
Head CC |
62 |
|
Dome / Dish Height |
0.25 |
|
Dom/Dish CC |
5.77 |
|
Compression Ratio |
14.2 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
428 |
|
Piston Weight |
498 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Ford Most 19° / 20° 4.125 bore, 4.000 stroke 6.200 rod 1.290 CH, +5.77cc Dome 1.2mm , 1.2mm, 3mm rings (CP Bullets BFR6166-STD) |
|---|---|
| Brands | CP Carrillo |
| Engine | Ford V8, Small Block Ford |
| Make | Ford |
Delivery & Freight
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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 compression ratio for the BFR6166-STD pistons?
The BFR6166-STD pistons have a compression ratio of 14.2, which is suitable for high-performance applications. Ensure that your engine build supports this compression to avoid detonation.
What type of ring gaps should I set for the BFR6166-STD pistons?
The BFR6166-STD pistons come with 1.2mm x 1.2mm x 3.0mm rings. It's essential to set the ring gaps according to your specific application, considering factors like boost level and RPM.
Do I need to machine the BFR6166-STD pistons for my engine?
Typically, the BFR6166-STD pistons will require proper bore clearance and ring gap settings tailored to your engine's specifications. Always consult with your engine builder for precise machining requirements.
What is the weight of the BFR6166-STD pistons and how does it affect my build?
The BFR6166-STD pistons weigh 498 grams. This weight is important for balancing your rotating assembly, especially in high RPM applications where lighter components can improve performance.
What type of valve reliefs do the BFR6166-STD pistons have?
The BFR6166-STD pistons feature two valve reliefs. Ensure that your cylinder heads and camshaft profile are compatible to avoid any interference issues.
