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massey 55 gas, mods?


 
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Schollz
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PostPosted: Sun Dec 30, 2012 10:15 pm    Post subject: massey 55 gas, mods? Reply to specific post Reply with quote

have a 1949 55 gas, got her down to 6900 lbs, want to pull in local stock vintage pulls. what can i do do get her to pull a little harder?
i was thinking of shaving and porting the head, what other little tips and tricks can i do?
of course i cant mess with it too much to keep it in stock class.


thanks,
Russ
 
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bp4455
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PostPosted: Mon Dec 31, 2012 1:21 pm    Post subject: Re: massey 55 gas, mods? Reply to specific post Reply with quote

get some hotter ignition, coil, plugs, wires. open up the carb and bore the manifold.
 
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Schollz
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PostPosted: Tue Jan 01, 2013 4:36 pm    Post subject: Re: massey 55 gas, mods? Reply to specific post Reply with quote

BP, thanks for the good ideas, where can I find a hotter 6volt coil ? What kind of wires? Like silicon ones? Using d21 champions, what's hotter ?
 
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mark49
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PostPosted: Tue Jan 01, 2013 7:09 pm    Post subject: Re: massey 55 gas, mods? Reply to specific post Reply with quote

Do yourself a favor and switch over to 12v. Then call CBS Performance and get an Ignitor, a flamethrower coil, and a set of their plugwires (can"t use solid core w/Ignitor). You should be able to take .100" off the head without running out of threads on the studs or shimming the rocker shaft pedestals. Open up the area under the intake valve, and find a 62 series carb (just like yours but with 1 7/16" butterfly instead of 1 1/4").
 
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Schollz
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PostPosted: Wed Jan 02, 2013 1:24 pm    Post subject: Re: massey 55 gas, mods? Reply to specific post Reply with quote

What kind of tractor or engine had the bigger carburetor? Is it a zenith carb or marvel? What about ignition timing settings?
 
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mark49
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PostPosted: Wed Jan 02, 2013 6:23 pm    Post subject: Re: massey 55 gas, mods? Reply to specific post Reply with quote

It is a Zenith carb and it is identical to yours on the outside (the bottoms will interchange). I got mine from Treadwell Carb (Treadwell, NY). I believe they were use on a Leroi industrial engine.
 
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