Small Block Chrysler Inv Dish -17.8cc All 18 deg 4.030 bore, 4.000 stroke, 6.123 rod 9.5 to 1 Comp with 68cc head (CP Bullets BM4040-030)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Chrysler |
|
Engine Type |
SB Chrysler |
|
Part Number |
BM4040-030 |
|
Bore (in) |
4.03 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.123 |
|
Comp Height |
1.427 |
|
Head Type |
All 18 deg |
|
Head CC |
68 |
|
Dome / Dish Height |
-0.1 |
|
Dom/Dish CC |
-17.8 |
|
Compression Ratio |
9.5 |
|
Pin |
.984 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.295 / -.295 |
|
Cubic Inch |
408 |
|
Piston Weight |
467 |
|
Style |
Inv |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chrysler Inv Dish -17.8cc All 18 deg 4.030 bore, 4.000 stroke, 6.123 rod 9.5 to 1 Comp with 68cc head (CP Bullets BM4040-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chrysler |
| Make | Chrysler |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
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 BM4040-030 pistons?
For the BM4040-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. This ensures proper thermal expansion and allows for optimal performance.
What compression ratio can I expect with the BM4040-030 pistons and a 68cc head?
With the BM4040-030 pistons and a 68cc head, you can achieve a compression ratio of approximately 9.5:1. However, final compression may vary based on actual deck height and gasket thickness.
What is the weight of the BM4040-030 pistons, and how does it affect performance?
The BM4040-030 pistons weigh 467 grams each. Lighter pistons can improve engine response and RPM capability, but ensure your rotating assembly is balanced to accommodate this weight.
Do the BM4040-030 pistons require any specific machining?
Yes, the BM4040-030 pistons may require specific machining such as honing of the bore to achieve the correct clearance. Always consult with your engine builder for precise requirements.
What type of rings are compatible with the BM4040-030 pistons?
The BM4040-030 pistons are designed for use with 1.5mm x 1.5mm x 3.0mm ring sets. Ensure that the rings are properly gapped according to your specific application for optimal performance.
