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Allis Chalmers Discussion Forum
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Petrol(gas) or Petrol Parrafin(Kero) ? Allis B

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Grennie

07-21-2005 10:40:06




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Got my Allis manual through today and they have two photos of the manifold. My manifold is for gas (according to the manual) BUT .. I have two tanks and the valves for petrol/parrafin. Does the petrol/parrafin manifold have to have the larger heat exchanger or can I try to run my B on petrol/parrafin with the petrol type manifold.
I have put some photos on my website for those interested. (also to clarify what type of manifold I have)>Link
Thanks>Link

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Tramway Guy

07-22-2005 07:23:51




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 Re: Petrol(gas) or Petrol Parrafin(Kero) ? Allis B in reply to Grennie, 07-21-2005 10:40:06  
It is quite possible that the previous owner put in new pistons which would have raised the compression ration to the point where it would no longer work on Distillate (a/k/a Kerosene a/k/a Tractor Fuel). So once you get it running, check the compression pressure and see what you have. If your compression is down in the neighborhood of 55-70 PSI, you might be OK with the low-grade fuel. You would definitely need the "hot" manifold, though, because that stuff won't vaporize properly without it.

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gene (Missouri)

07-21-2005 21:00:01




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 Re: Petrol(gas) or Petrol Parrafin(Kero) ? Allis B in reply to Grennie, 07-21-2005 10:40:06  
I'm going to provide an opinion. I have a WC with a dual fuel manifold. The manifold comes with two covers one marked "K" - (kerosene/distillate) and one marked "G" - gasoline. The K cover heats up the manifold more than the G cover. Without the K cover, I don't think the tractor would run very well on kerosene/distillate (parrafin).

Also, on the WC's there is a difference in the gasoline and dual fuel manifolds. The gasoline manifold has the exhaust risers above the intake risers. On the dual fuel manifold the exhaust risers are below the intake risers - assume to provide additional heat to the intake risers.

Gene, Missouri

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Grennie

07-27-2005 01:26:51




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 Re: Petrol(gas) or Petrol Parrafin(Kero) ? Allis B in reply to gene (Missouri), 07-21-2005 21:00:01  
I found a local guy who has a B with a Zenith carb fitted. His large cover plate is in place and I can now understand how it all works. I think you are correct in thinking that it wont run well on Kero until I obtain that large cover. I am seriously thinking about trying to get hold of a Zenith carb for it too as the existing carb is in very bad condition. thanks for your help guys.



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