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Ford 9N, 2N & 8N Discussion Forum

NAA Spark Plug Carb Settings??

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Bill (BC)

03-06-2006 21:20:29

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Does the 54 NAA use the same spark plugs as a 8N.
Also are the Marvel Carb adjustments the same ?
Hoping to try & start a NAA non runner in the morning.

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Dell (WA)

03-07-2006 00:04:17

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 Autolite 437 in reply to Bill (BC), 03-06-2006 21:20:29  
Bill..... ...yes, the OHV NAA engine was designed to use the same Champion H-10 sparkies just like the flathead 8N engine. Modern no-lead gasoline seems to require a HOTTER sparkie such as the Champion H-12 to keep from fouling. Howsomevers: most find that the AutoLite AL-437 equivalant of the H-12 to be a "better" sparkie. Gap = 0.025.

Both Ford and Marvel/Schebler say to set both the side-pointing idlemix and the down-pointing mainjet to 1-turn to start with. I adjust the down-pointing mainjet to 1-1/2 turns and LEAVITT!!

I then adjust the side-pointing idlemixx for maximum idle speed, not smoothest runing, max idle speed. Understand? Remember the idlespeed is bassackwards, out for lean, IN for ENRICH. My idlemix usually ends up about 3/8-turn. Yours will be different..... ....respectfully, Dell

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Bill (BC)

03-06-2006 22:24:45

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 Autolite 216 in reply to Bill (BC), 03-06-2006 21:20:29  
The local parts Guy said Autolite 216 are ok for an 8N?
Can I use them for a NAA, as I have these.
I believe most here use 237's ?

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Kelly Jewell (KY)

03-07-2006 08:14:35

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 Re: Autolite 216 in reply to Bill (BC), 03-06-2006 22:24:45  
Bill, the 216 plug is a cross from the Champion H-10 which was original for the Ns. They will work, but not very long. The 437 Autolite is two heat ranges hotter and is what CNH puts in their tune up kit( they call it a 82) and the only plug I use....Kelly.

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dan hill

03-08-2006 17:53:04

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 Re: Autolite 216 in reply to Kelly Jewell (KY), 03-07-2006 08:14:35  
My 600 has been running on 216s for 15 years.

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03-07-2006 06:38:20

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 Re: Autolite 216 in reply to Bill (BC), 03-06-2006 22:24:45  
that was going to be a question of mine today, as i was doing the tuneup on my 8n, the set of tuneup parts cap,rotor,cond,plugs, came with 216 plugs,

the tuneup kit from the same place for my 9n had 237 plugs, I will wait to see what they answer you, pat

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