[Wayne 962]

10.3 is close - you could have problems, but if you do, you can always alter the timing a bit to prevent detonation. On a 3.2 Carrera motor, you can't adjust the timing, so your options are limited.

You would have to run 93 or better (race gas or octane booster), or you'd have to run twin-plugs to *guarantee* that you wouldn't have detonation.

The trouble is, if you increase your compression too high, then you will have to retard your timing, which results in power loss, which counters the whole point of raising your compression to begin with.

For a street motor, I recommend keeing it under 10:1.

-Wayne