[marc hildebrant]

Group,

I installed a rebuilt Zenith today on to my 1931 Tudor. I had a tillitson on it originally.

I had not had good power with the car and thought that the tillitson needed to be rebuilt. At Berts in Denver I saw a nice rebulit Zenith and decided to try it.

Today was 100 degree's and I'm at 5000 ft. Water boils at 200 degree's.

When I went out for a road trip, the first 10 minutes were great ! Good smooth power and a real joy to drive. Then, the motor lost power and I needed to turn the GAV a couple of turns to get home. What Happened ?

The temp of the water was 190 and it was hot (100) and sunny.

Tonight, I needed a soft serve ice cream and thought that I would try again. The car ran great...even with a run down the road around 50 MPH. Much more power and real smooth motor. The sun was down and the air temp was in the 80's.

Is the loss of power during the hot day vapor lock ?

By the way, when the motor was running bad, it could idle O.K. and when I checked the spark...I had almost 1/2 inch of spark.

Marc