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Ford 9N, 2N & 8N Discussion Forum
Show Parts for Model:

Autolite 216 or 437?

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T.W.

08-04-2008 05:25:11
149.32.192.33



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I went to NAPA the other day to get a set of plugs for my 49 8n and the man gave me 4 Autolite 216's. But after reading the archives here everybody says to get the Autolite 437's. What is the difference?




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Phil9N3667

08-04-2008 18:58:47
205.188.116.145



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 Re: Autolite 216 or 437? in reply to T.W., 08-04-2008 05:25:11  
I put 437's in mine awhile back and couldn't believe how much better it ran. This is with gas/diesel mix I bought home from work. A couple of times a year a pickup with a diesel will be towed in to get gas pumped out that got put in when the owner had a brain-f**t. I did make the mistake of putting some in my 17 horse Kohler powered lawnmower and blew the head gasket! That was smart!? I'll never use Champion H-12's again!

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6869704x4

08-04-2008 09:36:44
12.202.246.85



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 Re: Autolite 216 or 437? in reply to Sean (TX), 08-04-2008 05:25:11  

T.W. said: (quoted from post at 07:25:11 08/04/08) I went to NAPA the other day to get a set of plugs for my 49 8n and the man gave me 4 Autolite 216's. But after reading the archives here everybody says to get the Autolite 437's. What is the difference?


I asked for 437s and the parts guy tried to give me AL85s. He said thats what the 437 crosses over to. 216s were in the tractor when I bought it.

I dont know if the 85s are considered a hot or cold plug.

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Dell (WA)

08-04-2008 11:41:00
172.192.18.88



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 Re: Autolite 216 or 437? in reply to 6869704x4, 08-04-2008 09:36:44  
Yes, MotorCraft AL85's cross to 437's and therefore are considered to be a "hotter" plug. 216's cross to H-10's and are considered to be a "colder" plug. Simple, eh? ......Dell yer self-appointed sparkie-meister



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Dell (WA)

08-04-2008 07:47:20
172.192.18.88



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 Re: Autolite 216 or 437? in reply to T.W., 08-04-2008 05:25:11  
TW........sparkies come in 2-variety's HOT and COLD. Too HOT and the gas will self-ignite (ping) before its supposed to, lack power and melt the top of yer piston. Too COLD and yer plugs won't burn off the natural carbon by-products of combustion and FOUL out and quit sparkling.

The 1939 low compression N-Engine was designed for un-leaded 70-octane gasoline and cool Champion H-10's. Modern no-lead gasoline has additional additives that condense on the plug business end and FOUL the plug so a HOTTER (temp range) is recommended, such as Champion H-12.

Many find enny Champion to be un-satisfactory in use because of early fouling and short life. And many Champions have built-in anti-radio static resistors which cut-down the available sparkie volts to jump the gap. NOT GOOD with marginal ignition systems.

Howsomevers; we recommend the HOTTER AutoLite 437's (gap = 0.025") with extended tip for self-cleaning and less fouling. HOTTER sparkies such as the 437's are also recommended for oil-burning worn engines too. Always use old fashioned COPPER-CORE sparkie wire 'stedda' modern carbon-core string sparkie wire .......Dell, yer self-appointed sparkie-meister

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G6 at Snook, TX

08-04-2008 05:43:32
4.131.79.151



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 Re: Autolite 216 or 437? in reply to T.W., 08-04-2008 05:25:11  
Burn hotter with today's gas making the tractor run better. If Dell is out there he will give you a better explanation than I. BTW, I use the 437 and the tractor runs great.
NDG



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Sean (TX)

08-04-2008 05:42:23
208.117.65.248



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 Re: Autolite 216 or 437? in reply to gerry22, 08-04-2008 05:25:11  

T.W. said: (quoted from post at 08:25:11 08/04/08) I went to NAPA the other day to get a set of plugs for my 49 8n and the man gave me 4 Autolite 216's. But after reading the archives here everybody says to get the Autolite 437's. What is the difference?


That # crosses over to the recomended plug H10=216 Autolite 437 is a hotter plug. Less chance of fouling.

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