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Tractor Pulling Discussion Forum

chads or anyone

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farmall m

06-23-2005 13:49:18




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i am going on alcohol but got a couple questions. i should have around 250 pounds of compression. when i break it in should i break it in with race gas first then change the carb over to alcohol or just start out with alcohol? do you run any additive to your alcohol like water or oil. what kind of plug do you run because i just got those spark plug adapters to run 14mm spark plugs so i have some more heat ranges to choose from. how big should the jet be? i was thinking around 3/32 or 1/8. i am getting a 806 metering stem. i have a fuel pump for it if needed. will you think this will be suficient or not? oh its a 281 block with a 450lp head. thanks in advance

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ChadS

06-23-2005 15:10:06




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 Re: chads or anyone in reply to farmall m, 06-23-2005 13:49:18  
Klotz oil, it is an upper cyl lubricant. Use to the bottle specs. Takes a pretty hot plug, lot of fuel to ignite. It is easier to drill out the main jet, and tap it so a holley jet fits in, then you can use the load adjustment screw still, jetting will be bigger than you ever would expect, and then some. The holley jet gets you closer, but still may have to drill the biggest one they make! I could never get a M-450, or any 6 cyl metering stem flow enough alcohol and run right, we made our own metering stem, and tha is close to a 1/4 inch diameter through the center of the stem. Once we got the stem it was bout like setting up on regular gas, feed it enough till the plugs were brown. Put on the pump, break it in on gas, then convert it, all the work to put it on alky, is done to the carb bowl. You will have to drill the idle too, not the smaller stem, but the one beside it. lets more fuel in, electrinic, or MSD ign should be used, points,,, well they are not quick enough to do the job, kept misfiring, the MSD helped tremendously in the way it ran, and started. ChadS

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farmall m

06-24-2005 09:02:06




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 Re: chads or anyone in reply to ChadS, 06-23-2005 15:10:06  
you said you had trouble with it idling before on alky. I read in a couple posts back about what happened to that 300 carb. did you try that yet?



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ChadS

06-24-2005 10:41:44




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 Re: chads or anyone in reply to farmall m, 06-24-2005 09:02:06  
The 300 was a stocker running on gas, trying to make it idle without smoking the plugs from gas. Ended up swapping the throttle body with a M. The alky engines started good, and idled, They do idle a little higher, but never had trouble under 1000 rpm and below. Chad



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farmall m

06-26-2005 13:01:45




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 Re: chads or anyone in reply to ChadS, 06-24-2005 10:41:44  
chad, is it alright if i call you and ask you a couple questions? thanks alot



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