Re: The Duchess Project: 1940 Super 8 Convertible Sedan
Posted by Joe Santana On 2017/7/27 14:39:28
It looks like I know what it's like to drive a Packard 110.
We're going to overhaul the engine. The exhaust valves are cracked. Why would they be cracked so badly?
Because I put ATF 4oz per 10 gal gas in fuel tank?
Because I occasionally put aviation fuel in the tank?
Because of unleaded fuel?
Because of ethanol?
My driving?
Jim Classen (rip), one of the most respected machinist-mechanics here, installed stainless seats 10 or 15 years ago. The valves came from Egge, but were purchased in '86. I can't check them with a magnet at the moment, but we're pretty sure the exhaust valves at least are stainless. I think Jim would have replaced them if they weren't when he did the seats.
But wow, they look so bad. What do I need to stop doing?
Attach file:
(334.31 KB)
We're going to overhaul the engine. The exhaust valves are cracked. Why would they be cracked so badly?
Because I put ATF 4oz per 10 gal gas in fuel tank?
Because I occasionally put aviation fuel in the tank?
Because of unleaded fuel?
Because of ethanol?
My driving?
Jim Classen (rip), one of the most respected machinist-mechanics here, installed stainless seats 10 or 15 years ago. The valves came from Egge, but were purchased in '86. I can't check them with a magnet at the moment, but we're pretty sure the exhaust valves at least are stainless. I think Jim would have replaced them if they weren't when he did the seats.
But wow, they look so bad. What do I need to stop doing?
Attach file:
(334.31 KB)
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