Could someone tell me if theres a drain on one of these jaspers, because mines full, as far as i'm aware its an overflow and not an expansion tank. I had a problem with my zed dumping coolant intermitantly from the passy side arch. Off the road at the mo but having the rad out to flush every thing through, Any thoughts ????

You need to syphon the excess out, if its dumping after shutoff toy either have a duff radcap, or more likely a tint hairline leak thats letting air in after shut off, thus making it dump water. Check your matrix hoses at the bulkhead and your turbo water feeds as they are a common cause.

yeah it dumps when i shut the engine off, right well ive just changed the rad cap to a greddy one, and ive done a plenum bypass not so long ago, so you think maybe the matrix hoses with a small crack, hmmm i'll have a look, but dont think theres any leaks, surely if air can get in then coolant can escape.

Ah, the old overflow tank thingy.

 

I binned mine. no problems.