#13186, "RE: 4g63 leak down test results - what do you think?" In response to In response to 4
1800 dollars is extreme for any type of OEM head work. If that is the case why not buy a replacement OEM head from ebay for under 300 bucks with the money to build it if you wanted to,
But I agree with "Star Turbo Talon" it could be a number of things.
Are you smoking or making any new noises during idle or while its rev'd up?