Engine Specs - S65 ValveTrain
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Contents
Factory Camshaft Specifications
| MM | SAE | |
|---|---|---|
| Base Circle | 30.000 | 1.1811 |
| Lift | 11.400 | 0.4488 |
| Intake Open | -1.000 | ATDC |
| Intake Close | 102.000 | ABC |
| Exhaust Open | 81.500 | BBC |
| Exhaust Close | 14.000 | ATC |
Schrick '284' Camshaft Specifications
Base Circle: MM (SAE)
|
Lift: MM (SAE)
|
Opening Angle (° CA)
|
Spread
|
Intake Opens
|
Intake Closes
|
Exhaust Opens
|
Exhaust Closes
| |
|---|---|---|---|---|---|---|---|---|
| Intake Cam | 30.000 (1.1811) |
12.000 (0.4724) |
284 | 132-74 | 12 | 90 | 68 | 36 |
| Exhaust Cam | 30.000 (1.1811) |
12.000 (0.4724) |
284 | 134-86 | 96 | 8 | 48 | 56 |
Schrick '292' Camshaft Specifications
| MM | SAE | |
|---|---|---|
| Base Circle | 30.000 | 1.1811 |
| Lift | 11.400 | 0.4488 |
| Intake Open | -1.000 | ATDC |
| Intake Close | 102.000 | ABC |
| Exhaust Open | 81.500 | BBC |
| Exhaust Close | 14.000 | ATC |
Valve Guide Specifications
| MM | SAE | |
|---|---|---|
| Intake Guide | 5.017 | 0.1975 |
| Valve Stem | 4.971 | 0.1957 |
| Clearance | 0.046 | 0.0018 |
| MM | SAE | |
|---|---|---|
| Exhaust Guide | 5.017 | 0.1975 |
| Valve Stem | 4.966 | 0.1955 |
| Clearance | 0.051 | 0.0020 |
Valve Spring Specifications
Factory Valve Springs
| MM | SAE | |
|---|---|---|
| Free Height | 41.850 | 1.648 |
| Installed Height (L1) | 39.00 | 1.535 |
| Lift Height (L2) | 11.430 | 0.450 |
| Seat Pressure @ L1 | 12.364 | 55.000 |
| Seat Pressure @ L2 | 39.342 | 175.000 |
| Lift (L2 to Coil Bind) | 2.413 | 0.095 |
| Maximum Lift | TBD | TBD |
| Spring Rate | TBD | TBD |
BE-Design Valve Springs
| MM | SAE | |
|---|---|---|
| Free Height | 48.300 | 1.902 |
| Wire Diameter | 4.000 | 0.157 |
| Coil Diameter (@top) | 22.000 | 0.866 |
| Coil Diameter (@base) | 26.000 | 1.024 |
| Seat Pressure | 40.823 | 90.00 |
| Pressure @ 0.450 | 106.594 | 235.00 |
| Lift @ Coil Bind | 3.302 | 0.130 |
- BE-Design valve springs are sourced from the same manufacturer as Schrick valve springs. Schrick does not design or make the valve springs on their own.
Schrick Valve Springs
| MM | SAE | |
|---|---|---|
| Free Height | 48.300 | 1.902 |
| Wire Diameter | 4.000 | 0.157 |
| Coil Diameter (@top) | 22.000 | 0.866 |
| Coil Diameter (@base) | 26.000 | 1.024 |
| Seat Pressure | 40.823 | 90.00 |
| Pressure @ 0.450 | 106.594 | 235.00 |
| Lift @ Coil Bind | 3.302 | 0.130 |
