Re: Farmall M High Altitude?

Posted by Randy-IA on November 20, 2005 at 15:48:53 from (207.177.83.171):

In Reply to: Farmall M High Altitude? posted by Pete Zahrt on November 20, 2005 at 14:40:31:

Hi , I'm not going to say it's not true but to my limited knowledge if it also has a 1 behind it it is a gas only engine suffix ( example - 134222 X1 ) . The manual say's that a 5000' and 8000' option was available but I don't know how it was designated . The high altitude option consisted of new sleeves and piston's . I would think ( correct me if I'm wrong ) that they'd be a lower compression ratio to deal with the fact that the atmosphere is thinner at those altitudes . This would prevent preignition or " knocking " under load . I know that when I moved to Vail twenty years ago with a high performance Chevy truck I had to retard the timing a lot . This truck had 10.5 to 1 compression . I moved from St. Louis , Mo . I leaned the carb as far as I felt comfortable before I left . Might be the same for the tractor ? Just a guess really . Take care ...Randy

Follow Ups:

• Re: Farmall M High Altitude? Randy-IA 19:19:30 11/20/05 (0)
• Re: Farmall M High Altitude? flem 17:23:31 11/20/05 (2)
  • Re: Farmall M High Altitude? Pete Zahrt 08:52:35 11/21/05 (1)
    • Re: Farmall M High Altitude? Janicholson 17:18:55 11/21/05 (0)

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