So guys

the car is back on the road. My driveshaft problem is solved. But there is another one:

When I ride fast, sometimes there sprays water out of the vent where the cooling reservoir is.

Its a HTT engine with Weber loom and T34 turbo (1,3 bar max), yellow injectors, wolf program running. Exhaust temp is max 960° (defi).

Is it the head gasket or broken turbo?

Please give me your thoughts.

Thanks

 

can you not get the car on a rolling road to check it under load with the bonnet up??

failing that check al round that side of the engine to see if you can spot any marks where the coolant has been escaping from.
could be a head gasket but could be as silly as a rad cap.

another good method is try to get some uv of day-glo fluid to put in the water system, this can make it easier to spot the problem.

 

found out what it is....

rad cap is new allready. thought that also.

headgasket on cylinder 3+4 is blown:

a bit wet cylinder 4, silver cylinder 3....

rust on the spark plug at cylin. 4...

cylin 1+2 are both dry and grey/black.

Thanks for the ideas