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| Joined: | 09-18-2015 |
| Location: | Fullerton, California USA |
| Posts: | 147 |
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Reversing the cams or cam towers should not result in engine damage. In the stock engine the cams are the same. But even if they are not, as in the 104 / 107 for a 912, not a problem. Just won't give the best performance. If there is 0 compression, I wonder if all of the valves were bent during assembly. It is critical that the crank is not be turned until the timing belt is on or the valves with be bent by the pistons. In any case, sounds like you need to take the head back off and examine.