idi_econoline
No Bed For Me!
Could have brought this up on my current thread about chuffing, but split it off to a new thread:
Had my heads "fully reconditioned" 1½ yrs ago. I knew what precups do, and that they are made of that magical Inconel alloy. At that time, I was told that 1 of my precups was cracked, and it was replaced with a good used one (!?!) Was told by my now-suspicious machine shop that precups were too expensive to replace with new. Yet, I see discussion on this board that several members do, in fact, replace them. Dubious shop said precups are like $180 apiece? With new heads costing like $700 new?
I was told that I now have cracked precups, due to having run with "bad timing," no indication of whether that means advanced or retarded. I'm guessing that this is heat-related? Due to early ignition? (Was I reading on here that they're ceramic-coated? Is it the ceramic that cracks, then?) Or does the Inconel crack?
School me, gentlemen, before I spend any more money!
Had my heads "fully reconditioned" 1½ yrs ago. I knew what precups do, and that they are made of that magical Inconel alloy. At that time, I was told that 1 of my precups was cracked, and it was replaced with a good used one (!?!) Was told by my now-suspicious machine shop that precups were too expensive to replace with new. Yet, I see discussion on this board that several members do, in fact, replace them. Dubious shop said precups are like $180 apiece? With new heads costing like $700 new?
I was told that I now have cracked precups, due to having run with "bad timing," no indication of whether that means advanced or retarded. I'm guessing that this is heat-related? Due to early ignition? (Was I reading on here that they're ceramic-coated? Is it the ceramic that cracks, then?) Or does the Inconel crack?
School me, gentlemen, before I spend any more money!