I have an F22a head that I took in to be cleaned and all but one cylinder held 20+ psi of air when they pressure tested the exhaust side and intake side of the head. The machinist wants to re cut ALL the valves and ALL the seats instead of just the one that isn't holding pressure. Keep in mind this engine was running when it was pulled. The goal for this engine is 400+hp and wont see much past 7k.
However, he also took the exh. valve and jiggled it and said that ALL the valve guides intake and exhaust also need to be replaced. The intake seem solid just like in the vid posted below while all the exh valves have about this same amount of play in them.
I want to avoid the "might as well while you are in there" idea cause that will kill a budget faster then hookers in Vegas. He also told me the head needed to be milled yet couldn't tell me the runout on the head. I am budget racer at heart while he has a 5.9 Cummins torn apart sitting next to my tiny 4 cyl Honda head... Definitely got the small fish feeling going there and didn't feel like he gave the best customer service he could of... Then again I wasn't willing to just jump and have things paid for that didn't need to be done.
have the same problem?
Friday, March 11th, 2011 AT 4:31 AM