Still in the process of finishing my Av8 frame. I have the front end in, and split the stock model A wishbone. Installed the tie rod ends on the split bones. When I set the castor to 7* the tie rod would have to mount exactly on the lower radius of the frame rail. The way I see it is either drop the castor down to somewhere between 4* - 5* OR cut out a chunk of the lower frame rail and fab up a some sort of sleeve with the tapered bung welded to it. (picture C-notch but with a piece of round tubing) What would you do?
Something doesnt seem right, they should be lower than that already I think. I had to pie cut mine and they were still mounted below the frame rail.
your dealing with castor. your degrees should be reading with the top of the king pin leaning back so if your lifting the wishbone up in the rear might not be right unless your spring mount in the center in high....pictures?
To get 7* of positive castor the car would have the front end higher than the rear to have the bones mounting at the frame rail. Are you sure you're not setting it up negative castor? yes post some pictures if you can.
won't be able to get in the shop till probably sunday afternoon. I'll post pics then. front crossmember is stock, and I'm measuring from the face of the king pins. I can't measure from the top of the pins because I have the stock model A king pins in there.
This is how mine was after Pie cutting the bones and it still had to mount below the rail to achieve 7*, I cant see how yours is at the rail without being cut.
That would explain it, you will more than likely have to pie cut it to get it where you need it but it does have to be at ride height to set it up. sometimes you can you put a socket on top of the king pin and check the angle from the socket?
Who said 7 is what it needs? This is an old wives tale. It's bs Monkey see, monkey do. Take a look in Motors or Chiltons. Old fords were "4.5 to 9" in black and white. Some douche said to himself, "halfway is 6-3/4, so I will call it 7"...and all the sheeple magazine writers who don't know shit, have printed this farse for decades. Caster depends on a least a dozen things, but all that is ignored.
Watch for too much picutting the wishbon. From a side view, you dont want to triangulate the front suspension, that would "lock it in" so to speak, cause the axle to lunge forward when compressing the front. On an A, the lower the split wishbone frame connection the better articulation.
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