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Discussion Starter #1
65 Ford Falcon Futura 170 ci engine.
Got the car from my 85 year old father.
Last time it ran was 35 years ago. And he rebuilt the engine many years ago
Why does it only have a 4 PSI radiator cap on it?
Original cap is 13 PSI.

Any idea, why he used a 4 PSI cap?

My dad memory is not so good anymore. So he's not much help, unfortunately.
I do remember him saying it ran a little hot, after he rebuilt the engine...

I did a pressure test soon after I got it, and it held 14 PSI just fine.

There was a plastic aftermarket overflow bottle connected to it.
But it crumbled when I removed it.

Any reason why he would install such a low pressure cap?

Thanks
 
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