Description
1.625 Dual Valve Springs - SPR-428-16
Clay Smith valve springs are among the most critical components of your engine. To ensure optimal performance, it is essential to match your camshaft and potential RPM with the correct spring rate.
When selecting the proper valve spring for your application, please verify the following specifications to ensure compatibility with your camshaft:
- Installed height
- Seat pressure
- Nose pressure
- Coil bind
Our valve springs are precision wound, shot-peened, heat-treated, and manufactured from the highest quality silicone and stainless wire
| Specifications | |
| Part# | SPR-428-16 |
| Mass (g) | 152.0 |
| Outer Spring I.D. (in) | 1.175 |
| Outer Spring O.D. (in) | 1.625 |
| Middle Spring I.D. (in) | N/A |
| Inside Spring I.D. (in) | 0.851 |
| Install Load (LB) | 280 |
| Install Height (in) | 2.100 |
| Open Load (LB) | 847 |
| Open Height (in) | 1.150 |
| Coil Bind Max (in) | 1.100 |
| Lift Max (in) | 0.900 |
| Freq. Outer (CPM) | 28793 |
| Freq. Middle (CPM) | N/A |
| Freq. Inner (CPM) | 27275 |
| Damper | No |
| Quantity | 16 |
Additional Information
Seat Pressure @ Installed Height: |
280 lbs |
Installed Height: |
2.100 in |
Coil Bind Height: |
1.100 in |
O.D. Outer: |
1.625 in |
I.D. Outer: |
1.175 in |
I.D. Inner: |
0.851 in |
Type: |
Dual |
Damper: |
No |
