How can you tell if your JDM engine is 9:5 or 10:1 mine came with a Primera header but some say that some are 9:5 and some are 10:1 some say a gold valve cover some say the regular ones is possible too how can I be sure for sure? thanks
<font face="Verdana, Arial" size="2">Originally posted by SR20loper:
How can you tell if your JDM engine is 9:5 or 10:1 mine came with a Primera header but some say that some are 9:5 and some are 10:1 some say a gold valve cover some say the regular ones is possible too how can I be sure for sure? thanks</font>