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Ford 9N, 2N & 8N Discussion Forum
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Timing

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Stumpalump

08-18-2007 04:39:50




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I just read that a Jeep 4.0 inline 6 has a high altitude crank position sensor available. It advances the ignition timing 4 degrees. I live at 6000 feet elevation and may bump my 8N sidemount timing up 4. Why not? Ever heard of high altitude ignition timing?




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C.bailey

08-18-2007 18:05:10




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 Re: Timing in reply to Stumpalump, 08-18-2007 04:39:50  
Does the sidemount dist's have advance weight's under the point's floor, if they do I would check the total timing after they are fully advanced, rather than the initial timing. If they don't then none of this would apply. The total advance is where things get burned up.



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Dell (WA)

08-18-2007 10:45:47




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 Re: Timing in reply to Stumpalump, 08-18-2007 04:39:50  
Stumpy..... when I was growing up in Durango Colo (el 6520) it was common practice to advance timing a couple of degrees for LOCAL residents. Flatland tourists would complain their Belchmobiles had power problems going over the local 10k passes but most mechanics would NOT give them the "secret ignition" treatment because after 1-week of sightseeing, they go back to their low elevation flatland home and PING and melt pistons. Not good.

I would advance the sidemount timing from 4-BTDC to 6-BTDC but NO MORE. Why? 'cuz you need enuff RETARD so you can START..... ..Dell, yer self-appointed sparkie-meister

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A. Bohemian

08-18-2007 11:07:54




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 Small World in reply to Dell (WA), 08-18-2007 10:45:47  
Dell, I never knew you grew up in Durango. My father has lived there for about fifteen years now and I come and go all the time.

Before he moved to Durango, we spent many summers in Creed, at about nine thousand feet. I well remember the old days, when he would stop around Wagon Wheel Gap and advance the timing ''a hair'' and adjust the carb to run just a little better.

He used to call the whole process ''putting in the high-altitude jets'' (it was a joke; he didn't actually replace anything).

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JMOR

08-18-2007 07:31:30




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 Re: Timing in reply to Stumpalump, 08-18-2007 04:39:50  
Advance it till it pings under heavy load & then back off a hair, sounds like a good technique & would take your altitude into account, where ever you are.



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