How to Degree a Cam: Considerations for V or Horizontally Opposed Overhead Cam Engines
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Considerations for V or Horizontally Opposed Overhead Cam Engines
01.31
| 00:00 | - If you're dealing with an engine with a V configuration such as a V6 or V8, or alternatively a horizontally opposed engine with single or double overhead cams, then the process of degreeing the cams requires a little more work. |
| 00:13 | Now we will need to degree both banks of camshafts as they're actuated independently. |
| 00:20 | While this adds time to the process, really it's not any more difficult and is simply a rinse and repeat of the process that we've already discussed. |
| 00:28 | In this instance we would start on the bank of cylinders that includes number one cylinder. |
| 00:34 | We would then degree the cam or cams on this bank of cylinders as described in the six step process. |
| 00:40 | This will have the cam timing events correct for this bank of cylinders, and following this we'd need to do the exact same process on the opposite bank. |
| 00:49 | This does however require us to reset our degree wheel to find TDC on the front cylinder of the opposite bank of cylinders. |
| 00:59 | From here we're just going to repeat the same process that we've gone through on the first bank of cylinders. |
| 01:05 | While it's always important to be accurate with your cam timing, this is especially important for V and horizontally opposed engines since a discrepancy in cam timing from one bank to the other may have a significant effect on the engine's volumetric efficiency bank to bank which can result in bank to bank fluctuations in air fuel ratio as well as a detrimental effect on engine performance. |
