Top hose is red hot to the touch, expansion tank is filling up as if under pressure, but temp guage is reading normal anyone any ideas???? faulty thermostat maybe???

 

blown headgasket?
is there a creamy discharge in the expansion tank?
then definitely a headgasket

 

Cooling systems always build up pressure!!

As said check to see if theres tell tale signs of a head gasket first....

 

As long as it's not like boiling over or something silly and as others have said are no other sign's of overheating (the fan cut's in and cut's back out again etc) then don't worry, they do get HOT

 

Ther'es no creamy discharge at all, its just everthing seems to hot, top hose sounds like its boiling and bubbling away.

 

In this blistering heat it probably is running hot, but if the temperature gauge is staying at a reasonable level and nothing is pissing out of the cap then i wouldnt worry too much.

Fit a bypass switch and have the fan running more

 

cvh's run hot , and apparently youre experiencing some african weather up there? 30 to 35'c is std summer temps down here
perhaps try a rad flush , drive 100km's , drain and flush with a garden hose.connect at the top thermostat hose and disconect the bottom water pump hose - you would be amazed at the amount of crap that comes out

 

As said above dont worry about it until it bubbles over or sumates ridiculous like that! As long as the fans work etc!

Also ive heard that they do bubble through the pipes anyway,as the water boils as it passes through the turbo!

 

shane PMSL @ your sig

 

is the bottom hose hot too?

 

just an idea, you might have an air lock in the system, if you can hear alot of bubbling its more than likely. Run the car from cold with the header tank cap off, then run it all the way up to running temperature. Then switch car off and let it cool with cap off this should release any air in the system. It worked with me after changing my engine, i experienced the same thing and discovered an air lock. If the water bubbles in the tank and bursts out let it do so as this is the air coming out the system, once the air is out it will settle and no more shoul come out the tank.

 

An RST cooling system should self bleed, as long as its run up to temperature first with the cap off as said