Drag Racing Discussions > Front Engine Dragsters

cooling question

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Mrs Esterhouse:
In my opinion a recovery style puke tank is a must. And don't forget there is a difference in caps, not all are meant for a recovery system.  We had a hard time with our low, flat mounted radiator at first. I could fill and run the pump forever and it would still get hot and puke.  Pulling a vacuum on the system has been the trick for us.

THE FRENCHTOWN FLYER:
Well, I run a Super Pro altered and I will tell you what works for me:
First, as others have mentioned, I installed a Schrader valve to bleed the air at the back of the head (My highest point in the system).

I also installed a Schrader valve in my Sirocco-style lay-down radiator. It is mounted on the body side panel via a 1/8" tubing, just in front of my front axle.
I also drilled a 1/8" bleed in my radiator cap to essentially run the system at "zero pressure". The overflow empties into a puke tank.

I drive to the lanes, start the car in staging to bring the temp up and pull to the ready line around 155 - 160 degrees. Make my run, usually around 180 degrees in the shutdown area, drive back the return road, pick up my e.t. slip, and return to my pit space. It usually stays under 200 degrees and puts about 1/2 cup of water into the puke tank. My fill neck is about six inches tall and I leave the water level at the bottom of it.

Here is a vid showing the bleed just below the tach on the head and the fill neck with radiator cap:



and another typical run:



The temp gage is to the right of the tach. BTW, 550 HP six on gasoline.

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