Breaker points

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Breaker points

Postby 65GTK » Sat Jul 15, 2017 9:19 am

Hi All,

Can anyone tell me what the correct part number is for break points for a 65 Hi-Po? I want to replace mine but I'm not sure I've got the correct part number. I've seen A108V, PT602, and 12171. Are any of these correct?

Any tips for where I can order the correct parts online would also be greatly appreciated. :)

Thanks
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Re: Breaker points

Postby jwc66k » Sat Jul 15, 2017 9:29 pm

Try NPD https://www.npdlink.com/store/ They have a Motorcraft part numbers for sale for HP engines under their stock number 12171-2, $10.29 ea, you will need two.
Number 12171 is the basic number for all Ford distributor points. The full part number is similar to this C9AZ-12171-C. That's the points stock number from the 1975 edition of Ford Car Parts (aka MPC). The Motorcraft part number listed there is DP-6. Keep in mind, that over 40 years ago. The other two numbers you reference, I have no idea about, aftermarket numbers perhaps.
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Re: Breaker points

Postby zray » Sun Jul 16, 2017 10:07 am

Any NAPA store can sell you the equivalent part under their Echlin brand. I don't have the Echlin part number on hand, but every NAPA store can look it up for you.

Unless you can find some NOS HiPo points, the Echlin brand is next best thing quality wise. Seems like I remember they are similar to the 6 cylinder points (???)


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Re: Breaker points

Postby relicdog » Sun Jul 16, 2017 10:16 am

I think the Echlin part # is CS756

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Re: Breaker points

Postby C6ZZKGT » Sun Jul 16, 2017 12:48 pm

zray wrote:Any NAPA store can sell you the equivalent part under their Echlin brand. I don't have the Echlin part number on hand, but every NAPA store can look it up for you.

Unless you can find some NOS HiPo points, the Echlin brand is next best thing quality wise. Seems like I remember they are similar to the 6 cylinder points (???)


Z


The 6 cylinder points are the same except for the higher tension of the spring for the Hipo points.

-Fred-
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Re: Breaker points

Postby zray » Sun Jul 16, 2017 10:21 pm

C6ZZKGT wrote:
zray wrote:Any NAPA store can sell you the equivalent part under their Echlin brand. I don't have the Echlin part number on hand, but every NAPA store can look it up for you.

Unless you can find some NOS HiPo points, the Echlin brand is next best thing quality wise. Seems like I remember they are similar to the 6 cylinder points (???)


Z


The 6 cylinder points are the same except for the higher tension of the spring for the Hipo points.

-Fred-


Thank you Fred, I thought there was a slight difference in the tension, but was unsure which way it differed. I don't have enough long term experience to know if the tension difference affects longevity. But at least for less than 10,000 miles, the Echlin points can control the timing nicely up to 6,200 rpm, my usual shifting point.

Speaking of the shifting point, I've come to believe that the Ford Rally Pac tach lags a little, progressively. In comparison to a modern AutoMeter tachometer, or a timing light with integrated tach, I've noticed that there is a slight discrepancy at idle, which increases with rpm, culminating in a lag of about 600 rpm at 6,000 on the scale. I've noticed this issue with 2 or 3 rally pacs (originals) but not with the Shelby original Faria techs.

Anyone else ?

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Re: Breaker points

Postby Mad4HiPos » Mon Jul 17, 2017 8:15 pm

relicdog wrote:I think the Echlin part # is CS756

Relicdog


+1, the Echlin CS756 points are an excellent replacement IMO for the DP-6 HiPo points. The 6 cylinder DP-3 points may work (never tried it) but are physically a mirror image of the DP-6 points so would fit differently in the distributor (I think).

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Re: Breaker points

Postby C6ZZKGT » Mon Jul 17, 2017 10:34 pm

Mad4HiPos wrote:
relicdog wrote:I think the Echlin part # is CS756

Relicdog


+1, the Echlin CS756 points are an excellent replacement IMO for the DP-6 HiPo points. The 6 cylinder DP-3 points may work (never tried it) but are physically a mirror image of the DP-6 points so would fit differently in the distributor (I think).

Dave


The DP-5 point set is also for a 6 cylinder but appears the same as the DP-6 points with the exception of the spring tension. The Ford number for the DP-5 is a C9AZ 12171 A where the DP-3 is a C9AZ 12171 B. The DP-6 is a C9AZ 12171 C. I will not try to confuse anyone on here with the original part numbers from back in the day but suffice it to say that all of the numbers that I have given here are the later Ford replacements for the early numbers from when the cars were built.

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Re: Breaker points

Postby Mad4HiPos » Tue Jul 18, 2017 1:41 pm

The DP-5 points "might" still be available from Ford while the DP-6's are long obsolete. The DP-5's were also used in vacuum advance dual point distributors like the Boss 302, 351, and 429 and I think a couple CJ engines as well...

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Re: Breaker points

Postby C6ZZKGT » Tue Jul 18, 2017 8:16 pm

Mad4HiPos wrote:The DP-5 points "might" still be available from Ford while the DP-6's are long obsolete. The DP-5's were also used in vacuum advance dual point distributors like the Boss 302, 351, and 429 and I think a couple CJ engines as well...

Dave


The DP-5 points are also long obsolete from Ford.

-Fred-
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Re: Breaker points

Postby 65GTK » Fri Jul 21, 2017 12:06 am

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Re: Breaker points

Postby zray » Fri Jul 21, 2017 7:14 am

I've seen them on eBay, but it's been a while.

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Re: Breaker points

Postby C6ZZKGT » Fri Jul 21, 2017 8:16 am



What you are seeking is a DK14 which consists of points condenser and rotor. They were serviced up to the late 80's and are non existent in my national locator search. I only have one in stock and for obvious reasons I will keep it for my own Kars.

-Fred-
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Re: Breaker points

Postby KCodeCoupe » Fri Jul 21, 2017 8:19 am

65 Silver Smoke Gray GT K Coupe, 67 Vintage Burgandy GT K Coupe, 84 GT Convertible original owner with 1800 miles,
1986 Oxford White SVO, 2012 Yellow Blaze Boss 302, 2016 Shadow Black Shelby GT350 R
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Re: Breaker points

Postby C6ZZKGT » Fri Jul 21, 2017 11:17 am



Those are actually the 6 cylinder points that appear the same as the dual points with a lower spring tension. The part number is the earlier number before the C9AZ part number changes. They will work but will act as a rev limiter on our Hipo engines.

In the old part numbers the correct dual points are an FDS 12171 A. Yes, I do have them but I am saving them for show type distributor rebuilds.

-Fred-
66 K GT Fastback Silver Frost / Black Pony Interior
66 K GT Fastback Signal Flare Red / Black Pony Interior
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Re: Breaker points

Postby KCodeCoupe » Fri Jul 21, 2017 12:01 pm

Yep, and he wants $475 for the pair. :lol:
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