Technical 1932 Ford Kingpin Question

Working on a 1932 Ford with stock dropped axle and 1940 Ford spindles. Seems the axle king pin boss was reamed to .814 at some point in the past. I have rebuilt spindles with .812 king pins. Well they obviously don’t fit right and seem loose on the axle.

Do they make larger kingpins that I could use to make up the difference. All the vendors seem to have the .812

 

You could bore and sleeve the axle then ream it to the correct size.

 

The king pin and spindle bushings need to be well fitted.
Isn't there a tapered cross pin in the axle to secure the king pin in the axle bore and prevent it from rotating?

Like this
https://www.macsautoparts.com/early...bx5KM1y0WwlBe8eczRkaAmzXEALw_wcB&gclsrc=aw.ds

 

I haven’t put it together all the way to include the cross bolt. My .814 ream fits right thru the axle boss, bearings and king pins are nice and tight at .812

I’ll put it together all the way and see if things tighten up, but the .002 slop in the axle boss had me concerned.

 

How about machining new .814 king pins from quality steel such as 4140? an easy project on a lathe. Then ream the bushings to fit. The dropped axle I used on my roadster had the same problem. The home machined k pins now have 47,000 miles on them. An easy solution. Greg

 

King pin doesn't fit tight to axle. Only fits tight to spindle.
Wedge bolt holds kingpin in place in relation to axle.
Note the flat side on king pin about in middle of length. This is where lock wedge pin grabs king pin.

 

you could have the kingpins hard chromed to .814 & ream the spindles to match .

 

Ive used axles with worn kingpin bosses but my experience is when assembled its worn bushings in the spindle that have caused me issues. I know thats not what you were asking but id assemble it and feel it. I think its just gonna be fine

 

I had the same problem with the dropped original axle under my '37 1/2 ton, the king pin was loose in the bore. I took the axle out and took it to "nostalgia sid" in Oklahoma(i live in st. louis). He said he could shrink the bore, ream it, and align the axle. I saw the equipment he has and the quality of the work that he does, i feel 100% confident in recommending him. I think the king pin bores get stretched sometimes during the axle dropping process.
Tom

 

Couple thou doesn't sound like much. The lock pin wedges the kingpin in place. If you feel it is too loose to do so; you can easily tune up the eye using a torch, hammer and an old kingpin.

 

What happened when you assembled it with the wedge bolts?
@Airborne34
Phil

 

It appears that it will be snug with no problems.