I am putting an engine together for a guy. The engine has fresh babbitt. He bought the car as a 1913 Canadian right hand drive speedster with the engine in pieces. (they added a right hand drive hogs head, steering and brake cross shaft with US block, head, dropped front axle with over the axle wishbone!)
I was out getting ready to set the crank when I checked the babbitt in the rear main, block. The person that poured the babbitt added thrust to the block side but I see that the babbitt is loose from the block on one side. This is telling me they did a poor job and probable did not drill holes to lock the babbitt to the block for the thrust. Because of the amount of time that has passed between the guy that started the protect and the current owner buying the car, now not sure what course of action should be taken.
While I have put a few thousand miles on mine with loose babbitt in the rear block I am not sure what to tell this guy.
Easy answer. Your name is now part of that engine. If it was me it would be done over right. I gotten to the point that if it ain't right I don't do the work.
Example had a guy that just wanted to freshen up an engine, lots of little things really need to be addressed, guy states I just plan to drive the car once or twice a year. Next thing you know a fellow called me about the total rebuild I did on the engine as he was thinking about buying the car. I don't freshen engines any more, it is rebuilt or someone else can do the work. By the way the guy didn't buy the car and said the owner really got upset that I explain what was patched up for a low use engine.
Just my thoughts
Mark, Tell him what you found. The monkey will then be transferred to the appropriate back.
The person that poured the babbitt added thrust to the block side but I see that the babbitt is loose from the block on one side. This is telling me they did a poor job and probable did not drill holes to lock the babbitt to the block for the thrust."END QUOTE"
Drilling holes in the case of end thrust on the block, would not hurt, BUT if it is not peened right, all the holes you have room for will not hold the babbitt tight. There is no case that Babbitt being poured in to a cast iron block, that it will not pull away from the casting.
With out peening, the crank will do it for you. When that happens, it will do one of two things. Either break up the bearing, or if it gets by with that, it will enlarge the clearance to more then you want in a very short time.
To late now as you have to peen when the babbitt is very hot out of the mold.
The Model A did not have holes in the thrust area, but we peen that also, and it stays.
Herm, what do you use to peen the Babbitt? KGB
This is one way (picture may be very small use Ctrl+ to enlarge);
Mark, I've seen those but not sure that's the best way. I may be wrong, my wife says I always am. KGB
When my wife saw my KRW bearing peener, she asked why I had a steak tenderizer in my tool box. I suggested she not use it on the round steak as it just might contaminate the meat. As she walked out muttering to herself, he has the damnest tools.
The best is an air gun, as the Wilson tool covers to much area at once, and some is missed.
Also I can peen the thrusts.
Ford did use the same shape, but it was used with a air, or electric hammer.
Well I went out and did some more work on the engine. I would never have seen it while there was no oil being fresh babbitt, but now that I have gotten a little oil in all three, they are all loose along the edges. I think someone forgot a step or did not know. I will talk to my customer when he comes over tomorrow.
Hi Herm ! where on the bearing do you start the peening process ? and must the caps be done also ? thanks, Ken
The caps should be cleaned, Tinned, and poured. The tinning holds the babbitt in.
I start in the middle and go the length of the center, and work to each part line. I over lap each pass by a half.
The peening tool is 1/2 I.D. with a smooth round end.
40 pounds line pressure on a Regulator.
You can see after filing that the babbitt is pushed back in to all the nooks, and crannies.
Herm: Sent you a Pm. Check your email. Thanks, Dan.