Originally Posted by
essiturbo
On a german escort site we have a big discussion referring the exhaust valves.A book from england for overhaul the cvh engine say that the exhaust valves are generally sodium filled.But you can by original exh.valves from manufacturer mahle without sodium only.I donīt now if i can rework my old valves.I will ask my engine rebuilder.But if i need new valves i have a big problem.Burton sells only valves without sodium.In ouer german escort site we are different views concerning this item.Maybe one of you can help or have experience with this problem.I will not destroy my rebuild engine if i install the normal valves.
I've been running a normal XR3i head on an RST for two years now and had no problems whatsoever. It's not exactly standard either.
Just make sure it's set up correctly. If the EGTs aren't too high it shouldn't be a problem.
I understand if you're worried though as from my experience German forums are usually full of idiots who tell you that your engine will explode if you don't use genuine Ford washing bottle fluid...
Whereabouts in D are you?