Can someone tell me why both heads of my 1999 Impreza turbo have cracked after 50K. The engines putting out 253bhp with a prodrive performance pack, de-cat downpipe & K&N flat panel filter.

 

Dont know?

bad from day one or you have cooked it i would suspect

Sorry about it though

 

Probably overheated at some time.

 

they do tend to crack between the inlet valve and spark plug hole. I would imagine that over 50% of turbo scoobs have at least one crack.

Paul

 

Thanks Pavlo,

The crack was from the spark plug hole to the inlet valve.
Even though the car was a year out of warrenty Subaru have now agreed to provide 2 heads, springs, valves & all parts FOC.
Apparently they are providing WRX heads.
Does that mean they will last longer?

 

i think 50% is a tad overstating the problem! Thats putting it mildly.