QUOTE(tomrev @ May 28 2015, 08:39 AM)
Can't find anything in search; I have a '72 1.7 with one cyl. at zero comp. Appears to be exhaust valve. Because all else is very good, I'm thinking of leaving the drivetrain in place, and removing the head for repair. Have you done this? Am I a dolt to not drop the engine? Appreciate feedback! Tom
Someone reported doing it about a year ago here. May be hard to find the thread. They were trying to get to a con rod bearing.
And yes, even though they pulled it off they would have been far far better off dropping the engine. Put it another way. The only way to even think about this would be with the car on a lift so you have plenty of room to get to the tight spots. Once you have it on the lift it is nuts not to drop the engine. I won't call it easy cause I have only done it once. But it wasn't nearly as hard as replacing an oil pump with engine in. Easier than an alternator swap. or just about.
Then you are almost certain to pull both heads and do the whole top end. But why go to all that work, button it up and then find out you have to.
How many miles? Bearings good with good oil pressure? My strategy was build another engine first and then I had something to swap in without the jack stand wait.