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8N Timing Specs

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mikeb

09-13-1999 06:48:37




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Im trying to check the timing on my 8N, i know that the static timing when the front mount distributor is installed should be TDC, and the full advance is 24 degrees at 2000 rpm, does anyone know what the timing should be at idle (400 rpm)? thanks for the help




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Mike in SF Va

09-14-1999 06:11:10




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 Re: 8N Timing Specs in reply to mikeb, 09-13-1999 06:48:37  
According to my OSM, the static timing for the front mount 8N distributor is fixed -- the distributor camshaft has an offset tang which mates into a slot on the engine camshaft and will only fit in that one position. Timing to engine is not determined off TDC. The OSM gives you a technique whereby you line up a ruler on the wide side of the tang, and match it up with a point 1/4-inch to the left edge of the lower mounting bolt hole at the position where the points are just beginning to open.

I did mine with this method (and some help from this BB) and it worked fine.

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mikeb

09-14-1999 11:14:30




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 Re: Re: 8N Timing Specs in reply to Mike in SF Va, 09-14-1999 06:11:10  
thanks, im aware of the static timing procedure and specs. i was trying to check the advance under varying rpm. I have installed timing marks on the front pulley and the only spec mentioned in the ITT manual is the 24 deg. advance at 2000 rpm. im trying to determine what the advance should be at 400 rpm idle. The static timing is 0 TDC but is advanced under speed via the centrifigal advance system.

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EricG.NH

09-15-1999 09:03:02




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 Re: Re: Re: 8N Timing Specs in reply to mikeb, 09-14-1999 11:14:30  
mikeb,
How did you determine TDC and where to mark your pulley?
Eric



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Ed Gooding (VA)

09-13-1999 11:58:04




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 Re: 8N Timing Specs in reply to mikeb, 09-13-1999 06:48:37  
>> does anyone know what the timing should be at idle (400 rpm)? <<

4 degrees, according to the service bulletin I have.

400-500rpm - 4
1000 - 8-9
1500 - 12-13
2000 - 17-18

Hope this helps..... ..... .....Ed
1952 8N475798



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David (La)

09-13-1999 12:45:22




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 Re: Re: 8N Timing Specs in reply to Ed Gooding (VA), 09-13-1999 11:58:04  
Those specs are for the sidemount Mike.



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