Hi fellas,

I've got a problem with coolant pressurising the cooling system and filling up the overflow bottle. So from the start i bought a TD42T to replace a ZD30
and after completing the conversion i had this problem right from the start. I have searched the forum and have
done what most people have said and have done the following to try to eliminate the problem so far, raised the front end to
get rid of any air locks in the block whilst filling up the radiator, radiator pressure tested hot and cold, no problems there,
compression test on all cylinders and all good, had the thermostat changed out to a new one, new radiator cap,
changed it out for a 1.1 bar, the head checked for cracks (no cracks) and head machined, new head gasket, new head bolts, head torqued down properly.
Not sure if I've missed anything but what can anyone else think the problem might be or what to do next, any help would be greatly appreciated.

Cheers Owen