What do you think of this Babbitt
 

This set of caps is ready to be cut to fit the crankshaft, I didn't pour them, but I know where it was done

Re: What do you think of this Babbitt
 

Kurt: Looks like was peened with KRW tool ,not good enough.
if you are going to use them on your own car i would suggest peening them yourself. We have a special tip for our air hammer. We reduce air pressure and peen aross entire surface enusre a tight fit.
www.jandm-machine.com

Re: What do you think of this Babbitt
 

ID yet to be machined. Ok with that.

Is it my eye or the distance between the camera and cap or do those "ramps" at exit and entrance go right to the shell?

Is this normal? Might these be thin at the flange/parting? A cast in ramp I might consider possible, but aren't the ramps normally machined as part of the grooving? And to leave SOMETHING at the cap and block mating surface?

Joe K

Edit: The J&M pix from the other thread is more what I might expect from the ramps. Smaller and leaving some metal at the match line.

https://www.fordbarn.com/forum/attach...1&d=1427290362

Re: What do you think of this Babbitt
 

They are N.O.S. Ford Caps!

Herm

Re: What do you think of this Babbitt
 

That is the way we have always done it.

If the caps are poured right, they will not fail.

So always run the oil wells to the steel, to get the most capacity for the oil wells.

Herm.

Re: What do you think of this Babbitt
 

Re: What do you think of this Babbitt
 

Model T and A babbitt that has failed. The first one is a Model A that was done buy a company that does several blocks and rods a year.

Re: What do you think of this Babbitt
 

Yes, they are NOS,yes the rear cap was primed with air hammer, this is what you would get at the dealer when Babbitt was poured in the block -- new caps

I found some pictures and description of the process in some web reprints of American machinist, the Babbitt wasn't poured, it was done in an injection moulding machine

Re: What do you think of this Babbitt
 

Maybe, just the first Model A's were hand poured, as the movies I have seen, show that.

Herm.

Re: What do you think of this Babbitt
 

Could you explain to a novice at machining why peening has to be done ?

Why is hot pouring not sufficient ?

Does the babbit need to be compacted ?

Re: What do you think of this Babbitt
 

Mr. Pooch, contrary to belief, when I was born, I didn't know S%$#,
but now I can answer that.

No. 1. 2. & 3. When babbitt is poured in a block warm, or cold, with out tinning, it will shrink away from the shell, nothing to grab on to. If it shrinks away, and it will, it will be loose in the block.

So being that the babbitt is not up against the block shell, you have to give it a big push to where it should be, with peening. A good side effect of peening is as you say compacting the babbitt. You have to do this while very hot, or it will fracture the babbitt against the shell wall, and you would not see untill the bearing went bad, in a few short miles, as many do.

So also if it isn't peened, the crank will do it for you when cold, and as of the many pictures on the form, you can see what happens.


Now many people mistakenly beleave that the anchor holes in the block are to hold the babbitt from falling out, and it only works when you hold the block right side up. lol

Not true, the anchor holes ar there to keep the babbitt insert from spinning, as a notch on a modern bearing. If the babbitt isn't peened, those anchor don't hold anything in, they just bust out on the main part of the bearing.

Thanks

Herm.

Re: What do you think of this Babbitt
 

Thanks for the explanation Herm, Pooch wasn't the only one wondering.

Re: What do you think of this Babbitt
 

Same here, thank you Herm for posting and the pictures. Learning some good stuff!!!!

Re: What do you think of this Babbitt
 

Thanks Herm, but you said one thing that I CAN answer.

The notch in an insert bearing is NOT to stop it from spinning.

It is just used to locate the shell.

Bearing crush is used to stop the spinning.

Re: What do you think of this Babbitt
 

Mr. Pooch, Yes the bearing has crush to keep it tight, all bearings have to.

The real name for the notch, is called a Locking Lip, funny they would use locking in a term like that.

So, all bearings have to have crush, that keeps the bearing tight to the walls of the shell.

All bearings have to have a way to lock the bearing from spinning.

Before the Locking Lip, bearings were locked with shims that hung into the part lines, or they had brass pins the stuck out of the bearing shell and the brass, or steel bearing shell sliped over them and locked them in place.

Many had Brass screws, could be one, or two, and that locked the bearing in.

Some had Brass rivets in them, 4 to a 1/2 shell.

You don't need a Locking Lip, to line two inserts up, any one can do that and get them even, but you always need some way to lock a bearing from spinning, and as you know, when a bearing goes bad, that won't even be enough help.

Thanks Mr. Pooch

Herm.

Re: What do you think of this Babbitt
 

Herm,

That engine looks very familiar. :) Still running great after several thousand miles. Thanks!!!

Re: What do you think of this Babbitt
 

' Now many people mistakenly beleave that the anchor holes in the block are to hold the babbitt from falling out, and it only works when you hold the block right side up. lol

Not true, the anchor holes ar there to keep the babbitt insert from spinning, as a notch on a modern bearing. If the babbitt isn't peened, those anchor don't hold anything in, they just bust out on the main part of the bearing.'


If, say the holes in the block were not there, would a peened babbitt job actually be loose and fall out, if block was turned upside down ?.

Does it only hold on at the hole spigots?

Just interested, I always assumed without any knowledge the babbitt was adhered similar as a solder job would be, all along the backface and edges.

Re: What do you think of this Babbitt
 

Hey, Dave, I wonder about you once in a while.

I am glad you are making use of that nice original truck. It sure looks different then when you pulled it out of the old shed after 60 years.

I wish I had it, and you had a better one.

Take care,


Herm.

Re: What do you think of this Babbitt
 

Re: What do you think of this Babbitt
 

Mr. Pooch, Yes, after peening, the babbitt would be perfectly formed to the shell, but there would be nothing to stop the bearing from turning from the force of the crank shaft. A knife blade could lift it easily right out of the front and center bearing, and the flanges on the rear would be a little harder, but would have to be pried out with small bars.

Chevy 4 cylinders used solid babbitt inserts, in there front, and rear bearings. They were Jig poured, and had one single lug to keep them from spinning. Same thing as T's, A's, and B's. I will list some pictures, of the replacement bearings for the Chevy Fours.

Thanks, Mr Pooch,

Herm.