I have just taken the heads off, because the engine started to let off white smoke through the exhaust. Had a serious overheating on the highway due to a broken freezevalve just before this.
Found a crack in the one of the heads around a coolant passage in one of the heads gasket surface facing the block. Guess this is the reason.
Got a pair used heads from a guy in my area that might be restorable (they are said to be from 68, mine is a 70). They have the same castingnumber, ending with 250.
In the 68 ones there is extra holes in the exhaust ports that are not in the 70 ones. These holes are just smaller than a quarter of an inch. Anyone now what theese are for?
All the best,
Cardan
Found a crack in the one of the heads around a coolant passage in one of the heads gasket surface facing the block. Guess this is the reason.
Got a pair used heads from a guy in my area that might be restorable (they are said to be from 68, mine is a 70). They have the same castingnumber, ending with 250.
In the 68 ones there is extra holes in the exhaust ports that are not in the 70 ones. These holes are just smaller than a quarter of an inch. Anyone now what theese are for?
All the best,
Cardan