Big Block Chevy SR20 N/A 4.625 bore, 4.250 stroke, 6.535 rod, 1.120 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5326-125A)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCSRE5326-125A |
|
Bore (in) |
4.625 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.12 |
|
Head Type |
SR20 |
|
Head CC |
95 |
|
Dome / Dish Height |
0.45 |
|
Dom/Dish CC |
24.8 |
|
Compression Ratio |
15 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1.0 x 1.0 x 3.0mm |
|
VR Depth |
-.355 / -.020 |
|
Cubic Inch |
571 |
|
Piston Weight |
611 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's with Slant |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy SR20 N/A 4.625 bore, 4.250 stroke, 6.535 rod, 1.120 CH 24.5cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCSRE5326-125A) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
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 compression ratio for the BBCSRE5326-125A pistons?
The BBCSRE5326-125A pistons are designed to achieve a compression ratio of 15:1 when used with a 95cc cylinder head. Ensure that your engine is properly built to handle this high compression for optimal performance.
What type of ring gaps should I set for the 1mm, 1mm, 3mm rings on these pistons?
The ring gaps for the 1mm, 1mm, and 3mm rings should be set according to your specific application, considering factors like boost level and RPM. A common starting point for naturally aspirated applications is around 0.0045” per inch of bore for the top rings and slightly more for the second ring.
Do I need to machine the pistons for my application?
Yes, it is advisable to check the bore clearance and ensure that the pistons fit properly in your engine. Depending on your block's condition and specifications, you may need to hone the cylinders to achieve the correct clearance.
What is the weight of the BBCSRE5326-125A pistons, and how does it affect performance?
The BBCSRE5326-125A pistons weigh 611 grams each. Lighter pistons can improve throttle response and reduce stress on the engine components, but ensure that your rotating assembly is balanced to maintain reliability at higher RPMs.
What type of valve reliefs do the BBCSRE5326-125A pistons have?
These pistons feature two valve reliefs with a slant design, which helps accommodate larger cam profiles while maintaining adequate clearance for the valves during operation. Always verify clearance with your specific setup.
