Draining the rad

[SUX2BU99]

I have the original rad with metal end tanks. I've never looked for a drain !@#$ so is there one? I have to drain my rad and replace coolant with water in order to race my truck at the local drag strip which I plan to do tomorrow (WOOHOO!).

[VileZambonie]

There should be a drain near the steering box. If you are going to run straight water use this

http://www.redlineoil.com/products_coolant.asp

[eventhorizon66]

Mine had a little petcock on it at the bottom of the driverside tank (not sure if this was stock since the rad had been refurbished once).  It was a rusted mess and when I went to open it, it broke off in my hands and sprayed my engine bay with coolant.  Lesson here, use penetrating oil and work slowly.

[SUX2BU99]

Thanks guys. I'll poke around tonight and see what I can find. The coolant drain is only temporary for when at the track. After I return home, I'll drain the water from the rad (which I know will be mixed with coolant that stays in the block) and replace it with the coolant I had drained previously (or fresh stuff).  The track just doesn't want burst hoses and overheating causing slippery spots that take a long time to dry, causing long delays.

[VileZambonie]

Water (hydrogen) will rust your block, heads and water pump almost instantly. I would use the water wetter.

[SUX2BU99]

Even when mixed with the coolant that will be left in the block? I am only draining the rad. But I guess it's cheap insurance eh?