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Antique Gas Engine Discussion

Fairbanks Morse 1920 Z questions 3hp


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  #1  
Old 04-11-2017, 03:51:56 PM
Mlera Mlera is offline
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Default Fairbanks Morse 1920 Z questions 3hp

Hi all
I have a new ( to me) 1920 Z 450000 era with a AB33 mag 3 hp.spoked flywheel
I pulled the head and the piston at TDC is about 2 1/2" from the top of the cylinder is this correct on these motors? Is there another designation (sub model) for these motors ( I see ZC, ZD, ZH) the tag only has "Z" just digging into this one.
Things to do
Rebuild the mag
Machine governor
Valves, guides, and seats
Rod bearing
Ex rod
Throttle rod
This is such a fun hobby
Thanks in advance
Mike
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Old 04-11-2017, 04:00:48 PM
Kevin O. Pulver Kevin O. Pulver is offline
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Default Re: Fairbanks Morse 1920 Z questions 3hp

I can't answer most of your questions and I'm not intimately familiar with the model Z but yes most of these don't squish the fuel charge very much.
A lot of the old engines had igniters on the left side of the cylinder and of course the Piston couldn't go past that point and still expect to fire.
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Old 04-11-2017, 05:29:27 PM
Mlera Mlera is offline
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Default Re: Fairbanks Morse 1920 Z questions 3hp

Thank you Kevin
Looked at the squish scratched my head thinking is the piston wrong!
That makes sense about the side ignitor
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Old 04-11-2017, 07:28:49 PM
AKMark AKMark is offline
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Default Re: Fairbanks Morse 1920 Z questions 3hp

ZC is a closed crank, ZD is a small closed crank also called a salt block. Yours is a Z have fun with it.
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Old 04-12-2017, 02:08:39 PM
Mlera Mlera is offline
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Default Re: Fairbanks Morse 1920 Z questions 3hp

Thank You I will
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