Originally Posted by T_Terror
Hey, im just tryin to find out about the Eseries problem of blowing head gaskets which i have heard so much about. I just bought an early E-series for cheap due to a blown (you guessed it) head gasket. So ive almost finished bolting it all back together, i just wanna know how to fix this problem so it dont happen in teh future. Ive fitted a copper head gasket for added strength, anything else?
Use decent coolant at a 50/50 ratio with water and change it around every 12 months, oh and don't let the engine overheat.
I reackon what kills E-Series heads despite all the big conspiracy theories such as poor water channel design(well they are big cos it's a big motor), stretching bolts and all that crap, after seeing many a E-Series head the real reason as far as I'm concerned is corrosion.
Ford must have went cheap with the alloy they choose for the E-Series head. For example I recently saw a alloy head pulled off a RB30 motor(1987 VL) and it had very very little corrosion of the the water ports. Whereas on a E-Series every head I have pulled off has corrosion on the water ports to some degree, especially at the entrance.
Which leads me to the conclusion the alloy in the E-Series head is kinda sht, and corrodes very easily whereas other alloy heads on other cars use a decent quality alloy that doesn't corrode nearly as much.
So with the E-Series make sure you treat your cooling system like it's the lifeblood of your car. Good quality coolant mixed at home with 50/50 ratio with distilled water, radiator is not blocked and possibly a new thermostat if it's old, and the head gasket should last 10 years.
Oh yeah and I hope you shaved the head so the contact surface is flat and you used new AU bolts, otherwise it won't have a very good seal.