Radiator & fuel tank clearance

[Spider GK 250]

Hi, can anyone clarify if the radiator could be mounted too close to the fuel tank ( heat wise )?

I've just completed a custom change, mounting a small fuel tank (steel) in front of the radiator with about an 1/2 inch of clearance, the pressed edge and top of the tank seems to quite hot, but the underneath doesn't.

sorry unable to upload pics.

cheers
Chris

[Gene]

Adding heat to fuel could cause problems like vapor lock. A quick solution might be to use some adhesive backed insulating mylar from the auto parts store.