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Ford 9N, 2N & 8N Discussion Forum

The joy of aftermarket parts

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Author  [Modern View]

07-12-2020 08:55:05

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I have been building N series auxiliary hydraulic kits for roughly 20 years and have used dozens of the 192160 crankshaft pulleys. If you look one up the product description will tell you there are 4 x 1/4-20 tapped holes in the face. That has been wrong for most of those 20 years. The holes have been tapped 1/4-28 for many years yet the descrptions were never corrected. So this AM I was putting together another kit and when I went to bolt the hub to the pulley I could not get the flat head cap screws started. WTF? Turns out this last batch of pulleys I got (from Reliable Aftermarket Parts) are now tapped M6. Naturally i did not have any M6 flathead cap screws so I wound up redrilling and tapping the holes. So if you buy a new pulley make sure you get some M6 screws in advance. I will order a box of a hundred for future use and will be well stocked if you happen to need a few.

Just another ripple in the sea of old tractor life.....


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07-13-2020 16:02:28

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 Re: The joy of aftermarket parts in reply to TheOldHokie, 07-12-2020 08:55:05  
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That said, "they" invariably respond with, "DILLIGAF?" There's insufficient market pressure to cause them to change. Oh, for the days of honor and doing what is right....

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07-13-2020 06:07:57

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 Re: The joy of aftermarket parts in reply to TheOldHokie, 07-12-2020 08:55:05  
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I see no need for aftermarket suppliers to stick with the Ford OEM fasteners or threads in their complete assemblies. The only thing that needs to match Ford OEM specifications is the aftermarket assembly connections to Ford assemblies.

Metric fasteners (and to some degree BSP pipe threads) are the world industrial standard and pretty darn close to that in the USA today so finding them on newly manufactured parts should not be surprising. Regardless of imperial or metric the documentation for the part needs to be accurate.


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Tim PloughNman Daley

07-13-2020 04:36:23

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 Re: The joy of aftermarket parts in reply to TheOldHokie, 07-12-2020 08:55:05  
One of the common problems with aftermarket parts is that there are several makers and most all are made in Cheena, not licensed by Ford and therefore follow no OEM standards as far as design. They simply clone an existing part and make up the rest. I've had mucked up Sediment Bulb Assemblies -had Metric threads and really ruined a gas tank trying to assemble. I worked on an aftermarket carb a few weeks ago and the four OEM 12-24 Fillister Head screws that secure the two carb halves together were Metric. It matters who you buy from...

Tim Daley(MI)

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Bruce (VA)

07-12-2020 09:39:38

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 Re: The joy of aftermarket parts in reply to TheOldHokie, 07-12-2020 08:55:05  
It’s always nice to have a spare Model A timing pin on hand. Ordered a spare, put it in the tool box. Sometime later, I lost the timing pin on one of the A’s so I dug out the spare. It wouldn’t fit. Sure enough……it was metric. So I made it SAE.

Next time I was placing and order for Model A parts, I mentioned the problem. They were kind enough to comp me a timing pin. Which also turned out to be metric.

But nothing was as much fun to work on as a 1952 MG……with not only SAE and metric on the same vehicle……it also had Whitworth parts as well.

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Bob - MI

07-12-2020 09:00:24

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 Re: The joy of aftermarket parts in reply to TheOldHokie, 07-12-2020 08:55:05  
One of the things I always loved about the 2N was not having to reach for any metric tools. Oh well...

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