my 88 supercharged Mk I developed a huge appetite for coolant in the last 6 months. Not leaking, but using 1 litre in 100 miles. Head gasket?, but no milk in oil, and compression about 130 psi in each cylinder. Going through the archives I found examples of blown head gaskets with similar results, combustion gas leaking into coolant over pressurizing radiator cap.
TEST: ran hose from radiator overflow tube taped to outside of car with outlet near drivers window. At idle, low speed no problems; but 10 seconds after max power water/steam comes pouring out of overflow. Obviously a small leak from cylinder to coolant- ok at idle, but at power pressure leaks through and builds up in coolant system.
Remove head, gasket looks ok. ? looks like small horizontal crack in #2 cylinder. gee darn. this is more expensive
will a later 4age replace the 4agze block? Any items to look for?
Plan A: put all my AGZE internals (crank, pistons, head) on a 4AGE block
problems?
thanks
gene olson
so cal
|