Very high under bonnet temps

[07GTS]

are sides of radiator sealed ? if u have trans cooler in there and there is a gap in the sides air will flow out there instead of going thru radiator same if there is a gap top n bottom,

 

[01SS]

It's pretty good now. I've reinstated all of the top and bottom shrouds to factory spec.

 

[01SS]

Still a bit warm in traffic, still getting warm. Air con is a no go unless I'm on the highway. That brings the temp straight up.

 

[Immortality]

Really need to find out what those thermofan on/off settings are and get them altered if they are still stock. Probably check what thermostat it has in it too.

 

[01SS]

Yeah I've just put the right angle piece back on, the piece behind it, the sump guard and to top rad cover as well.
Yeah it's a 98 degree thermostat, which is what the temp sits on most of the time (around 210f on the autometer Guage) , after sitting in traffic for a while or having aircon on it goes over and doesn't come back down unless I get moving for a few minutes without stopping.

 

[07GTS]

LS thermostat should be 89-90 deg C u are prob sitting at the higher temp cos not enough airflow, u could put a 71c (160f) in it to get the water flowing sooner, where do u have the autometer gauge plumbed in ?

 

[01SS]

The Guage is toward the rear of the motor, when the autometer Guage has hit 230ish the dash temp Guage is showing about half.

 

[01SS]

Update. I haven't been here for a while but.
PWR radiator and 2 12 inch spal fans in a shroud did the trick.