Cool Head Leaking

[-Herbie-]

got a used cool head off dave5.0 installed it last week per mfg specs, with new o-ring kit. started the banshee for first time today since tear down and its dripping coolant out of the long studs. the coolant is showing up on the top of the stud around the nut and its a small drip.

 

Anyone have experience in how to fix this issue?

 

Also the service manual says it takes 2.64 quarts of coolant but after putting 1/2 that in the radiator was full & wouldn't take any more. I thought maybe after running it for a bit it would circulate and the level would drop in the radiator but that didn't happen. whats the deal?

[BigRed350x]

Sounds like one of the little o-rings that go around your studs didn't seat, or you have an air bubble trapped in the system somewhere and its building pressure in the head and pushing coolant around the o-ring. I'd pull the water-pump cover off and drain the system, then re-fill it slowly giving any air bubbles a chance to escape. Try that first, if the small leak around the studs continues you have 2 options. Pull the top off the head and replace the small orings that go around your studs, OR go down to your local hardware store and buy some copper crush washers that fit around your headstuds. Pull the two nuts off the studs that are leaking, put the crush washers on, then replace and retorque the headstuds.

 

- Jared

[dajogejr]

Notorious....

Go to the hardware store, get some good brass washers and get acorn nuts.

I always had issues with mine, especially in the center studs.

 

Put a dab of RTV on the threads, get 10 Acorn nuts, and you'll never leak up the stud again.