I think my head gasket might be gone. I keep suffering a loss of coolant but there is no evidence of a leak from the radiator or hoses etc. The coolant system pressurises very quickly and there is a constant stream of bubbles coming up through through the header tank or the expansion bottle, as the revs increase so does the steam of bubbles. I think when out on the road the pressure is forcing the coolant out through the expansion bottle.

Am I on the right track?

I'm thinking of taking the engine out and replacing the head gaskets but there seems to be a choice of thicknesses, 0.7mm, 1.0mm, 1.5mm. Which should I be looking at fitting?

 

Can you get the coolant tested for gases ? how much boost is your p1 running ?
sounds about right though

 

The bubbles smell like exhaust and petrol smell. Usually runs at 1.3bar most of the time on low boost and 1.65bar on high boost, I know thats probably the reason the head gasket has gone.

 

Do them both m8,speak to one of the well known tuners who will advise best gaskets

 

Thanks, was gonna do both while I was at it, looked at Cosworth head gaskets from Zen Performance but not sure what thickness to go for? 0.78mm / 1.1mm / 1.5mm thick ??

 

has the car overheated at all i think the different head gasket thicknesses are for if the head needs skimmed i think

 

Hi mate,

I have a pair of 1.6mm Cometic gaskets if your interested.