Quote Originally Posted by splats View Post
Depending what year the block & heads are, MAKE SURE THAT YOU HAVE THE OIL RESTRICTOR PLUG IN THE BLOCK (OR HEAD). It only took me 4 engine grenades before we found the problem. Its a $5.00 part that cost me thousands. Without it, it will pump all the oil to the head & starve the crank yet still have 50+ psi. If you use the factory head from THAT block, you should be ok. If not, check it. Apparently, this is unique to the 2.2/2.5 mopars. And for the rule nerds, its a factory installed plug that just pops into the oil passage TO the head. No rules creep or violation.

This also applies to hondas vtec opperation and othe engines as well! You machine shop will more than likely loose it or remove it during machining and cleaning the oil passages. Good tip!