My 3.2 X300 has split a coolant hose twice, the same one each time and it is now replaced. However, a friend pointed out that it split when I really booted it, foot to the floor at modest speed like 50 mph and of course it goes off like a scalded cat.

I assumed it was just the water pump working harder that raised the pressure and split the pipe while he mused if it was a head gasket leak causing pressure.

No oil in expansion bottle.
No water in oil
Water level constant

But I haven't booted it since fitting the new hose. I have run it at 4,000 rpm but not played the hooligan.

Any thoughts?

Mike

 

You can use this from Frost UK to check for head gasket leaks (not cheap at £46.00)
Block Tester Kit for Petrol and Diesels Cylinder Heads / Gaskets | Frost Restoration. Or I believe that you could maybe get a garage to quickly check for combustion gases present in the expansion tank using an exhaust gas analyser.

 

Could be worth checking the engine mounts too?

 

Because if the engine moves it could flex the hose I guess? I'll see.