OK could not wait 2 weeks till I return from Shanghai and decided to move forward with shrouding the radiator. Went to Home Depot this morning and purchased a piece of sheet metal 24"X24" and a good pair of tin snips
The results were surprising and actually lowered the operating temperatures by 5 degrees. Outside temps in Tampa today around 94F and with the car parked in the garage idling for 20min the coolant temps remained at 195F with no overheating.
Following the addition of the radiator shroud I have taken 3 test drives for 10min each time and under regular driving conditions the temp raises to around 200~205.
During my 2nd and 3rd test drive I decided to see what she had a did a quick launch till 50MPH and damn could I feel the 400+ HP... The power acceleration in these motors are awesome and so smooth.. The sound of the exhaust and air being sucked into the intake filter is not like a Vette, Camaro or any other V8 I have herd, a very unique sound for a unique car..
2 Problems noted:
(1) Rear Suspension dips entirely to much under accelerating. Not a bad problem to have when you start reaching 400+ HP. I also noticed my rear end had dropped about 1" from the additional weight so coilovers may be my solution to aid the extra weight and dips at take-off.
(2) 1st gear tranny hop
The Kevlar clutch is taking some time to get a feel for and if I do not time it just perfect I get a bad shake/hop. Starting out in 2nd seems to work much better. Hopefully once the break-in period is completed this will go away or become much easier. I remember on my 300+ HP Miata having a un-sprung Kevlar disk and it was a B*%CH to drive..
Here are some pics of the shroud work..
