[SEL] Old style Alamo question (not Blue line)

[Curt]

During the summer I posted some pictures of a tray cooled early Alamo 
that followed me home. I've been putting it together over the last few 
months. There was one missing part and I made a pattern of the latch out 
arm, had it cast, and machined it. The latch out works well now.

Now I am working on timing the engine, getting the exhaust valve opening 
and closing at the right time, and the ignitor tripping at the right time.

This is a walking beam style engine. I have adjusted the button on the 
bottom of the exhaust valve so that the exhaust valve closes right at 
TDC or just the slightest bit past TDC. That's as it should be. But as I 
continue to roll it thru the valve doesn't open until fully at BTC or 
even slightly PAST BTC on the exhaust cycle.

So far all the old gas engines I've worked on open the exhaust valve 
roughly 2/3's the way thru the power stroke. They all close the exhaust 
valve at TDC or 5° past TDC.

Could some of you fellows with old style Alamo's have a look at your 
engines and share what you see on your engines? Maybe this is the way 
Alamo designed it???

Curt Holland
Scratchin' my head in Gastonia, NC