hi all after my thermostat sticking closed im having to change the headgasket on my mk4 golf gt tdi as its slightly blown.It has got the 110BHP ASV engine int it.its blwon between the water jacket and exhaust (so ive been told) as it over pressurises the cooling system and drinks water but theres no white smoke out the exhaust,no water in oil or vice versa.is there any company that makes an uprated one for this engine or would i be better off just getting an OEM one from a dealership?it is the '2 hole' version by the way.thanks
dan
ps how much more work is it to do piston rings once head is off?as my engine has 153k now an i want a remap and not sure how long it will last mapped