Thread: Anyone running one of these puke tanks on the front of their hot rod?

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Your overflow tank should not start out empty, you want some coolant in there to replace what goes out, when the motor cools it sucks it back in. Make sure your cap is designed for a CLOSED cooling system. A regular cap is designed to let coolant out, but won't open to let it go back in.

What temp is your engine running at? Are you getting warmer at lights or going down the road?

Don

Oh, and make sure your overflow hose from the radiator goes to the correct fitting on the bottom of the overflow tank. It should go to the lowest one when looking down into the overflow tank. The theory is, the excess coolant rises and eventually will come out the taller tube. If you are hooked up to the wrong one it will spill out much faster onto the ground.