Originally Posted by WMichaels
If that's the case (I couldn't find anything online about the 3.0 spec.s... My 4.0 Explorer is 9.0:1) it's the exception not the rule where compression is over 9.5:1.
Wes,
I looked at some specs on other cars and there are more than I thought running 10:1 compression on regular unleaded fuel. Example: Honda Accord V-6 @ 10.0:1. I think the reason they are able to do this for ratios over 9.5:1 is by using aluminum heads.