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Tractor Pulling Discussion Forum

Impco 200 question for LW

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family traditio

05-21-2008 16:42:15




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I have been told that there are two different available jets for these carbs, a natural gas and an LP one. Have been told that the natural gas one will flow more fuel. Is this so, and if it is how can I tell which one I have?




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LW

05-21-2008 19:19:11




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 Re: Impco 200 question for LW in reply to family tradition, 05-21-2008 16:42:15  
There are about a 10 different noses for diaphams. the natural gas ones are usually leaner when used on lp. The deal is a pulling engine is more effecient and gives more signal to the diapham and therefore the leaner nose lets the fuel curve ramp up and down better coming in to the load. The best way to set one up with a O2 sensor and load on a dyno. I can get You real close give me a call and tell me what your dealing with.

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TGINDHW

05-21-2008 17:37:17




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 Re: Impco 200 question for LW in reply to family tradition, 05-21-2008 16:42:15  
There are two different size "jets" for the 200 carb. Why would you want more fuel? The LP "jet" will give you the right air/fuel ratio for max power. The natural gas will make it to rich for LP and you will not get the max power.



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