No, you don't/can't/shouldn't do this.
But.....
During a rebuild, my son's D17A1 stock cam slipped through my fingers and fell on the floor and instantly broke. There was language:
On the lathe, I threaded the broken end of the "front" half of the cam, drilled through the back two pieces, and counterbored the back of the back of the cam to fit a 9/16" socket. I also threaded some 3/8" rod:
Red locktite and some tight like a tiger, and it's fixed:
No, this will NEVER be pressed back into service, it's going back in a "dead" engine at work (our original engine when we got the car) that the cherubs work on (I stole its cam for my son's car).
I mean, I'm curious about it running for a controlled failure scenario, haha.
your fix and a little weld here and there between lobes would be enough to make the engine run. May not be perfect, but I bet the breaks key'd together really nicely.
You really have to test it in a running engine. For posterity. For science!
IIRC, the 2nd gen Taurus SHO (the one with the small V8) had separate cam lobes pressed onto the shaft. While they weren't the most reliable of components, it suggests that multi-piece cams can work.
ShawnG
MegaDork
3/29/24 1:05 p.m.
Should have kept it like that.
Use it to explain 1/4 race and 1/2 race cams to the students.
ShawnG said:
Should have kept it like that.
Use it to explain 1/4 race and 1/2 race cams to the students.
I already have that on the wall:
codrus (Forum Supporter) said:
IIRC, the 2nd gen Taurus SHO (the one with the small V8) had separate cam lobes pressed onto the shaft. While they weren't the most reliable of components, it suggests that multi-piece cams can work.
That's the way a large number of camshafts are made nowadays. They sinter a bunch of lobes, slide them over a shaft, and either ram a mandrel through it or hydroform it.
When the tech was new, I saw someone figure that it probably saved $5 per camshaft. The process is no doubt far cheaper now.
I just degree'd a cam out of one of the newer GM 1.5T motors and it looked it like it had pressed on lobes.
I've dropped and broken a handful of cams. Unfortunately all of them were customer cams. 
+1 for welding it and running it for science. Maybe slather the rod with JB weld for a little extra strength too?
And isn't that second gen SHO V8 famous for cam issues?
That picture of the different cams had me rolling!
JBinMD
Reader
4/1/24 3:05 a.m.
Pete. (l33t FS) said:
Sup with that freakishly long index finger!? Like ET phone home, right?
