Camshaft core shift

[threewood]

Brand new cam from reputable company. Solid lifter cam and it has what looks like core shift. Anyone seen this and what is acceptable?

 

[threewood]

 

[oldbee]

Assuming not a bad pic from camera, totally not right. Used to be, you just installed stuff w/o ever looking!

 

[threewood]

So with timing gear and bearing installed, #1 intake lifter is hitting the #2 exhaust lifter ramp. Enough to bump the entire cam forward. With all other lifters installed, no other interference.

EDIT - No issue with the Cloyes. One mark is for the dot, the other is for the keyway.

 

[POMONAMISSEL]

well off shore manufacturing is really worth it . what bets me is that lube out of place was still ground correctly . should have the QA inspector caught that , as well as the grinder . goes to show you they just don't care !

 

[threewood]

So the cam needs to go back is what I'm hearing? It is a Hughes grind. I don't know where they get their cores.

 

[70Hemi-RR]

So with timing gear and bearing installed, #1 intake lifter is hitting the #2 exhaust lifter ramp. Enough to bump the entire cam forward. With all other lifters installed, no other interference.

Second issue with **** quality, a shout out goes to Cloyes for double stamping their crank sprocket so I have double the options to advance or retard the damn cam. Can anyone make a part that fits out of the box?!
View attachment 1846512

I’m pretty sure it’s double stamped for a reason.
One is the keyway slot and the other is the tooth notch.
Example if you want to advance it two degrees you would use the A2 keyway slot and then line up the A2 tooth notch with the top gear marks while installing.
Been a few years but I’m thinking that’s how it works.

 

[threewood]

I’m pretty sure it’s double stamped for a reason.
One is the keyway slot and the other is the tooth notch.
Example if you want to advance it two degrees you would use the A2 keyway slot and then line up the A2 tooth notch with the top gear marks while installing.
Been a few years but I’m thinking that’s how it works.

Gotcha. I just looked at the instructions and you are correct. I'll fix my post above.

 

[threewood]

Here is the spot the lifter rubs on the side of the lobe. Another question, are the lifters suppose to be offset to one side to induce rotation?

 

[padam]

Is CWC cast into the core? I was told they were the only company casting flat tappet cam cores in the US.

 

[1967coronet]

Send you pics to Hughes, Get a return shipping label. Tell them to send out another one.

 

[dodgeboy440]

Brand new cam from reputable company. Solid lifter cam and it has what looks like core shift. Anyone seen this and what is acceptable?
View attachment 1846488

Are you a METALLURGIST?

Looks like any flat tappet cam , Ive ever installed numerous times over the years!

 

[dodgeboy440]

Here is the spot the lifter rubs on the side of the lobe. Another question, are the lifters suppose to be offset to one side to induce rotation?View attachment 1846559

These Are MACHINED CASTINGS You Know............Right .

You've Circled A Casting Mark! So...............

If YOU WANT A CAM WITHOUT THOSE BUY BILLET ROLLERS.

 

[threewood]

Is CWC cast into the core? I was told they were the only company casting flat tappet cam cores in the US.

 

[threewood]

Are you a METALLURGIST?

Looks like any flat tappet cam , Ive ever installed numerous times over the years!

So you are saying I should dremil the side of the lobe to keep adjacent lifters from rubbing the sides of those lobes? Do you grind on new cams to make them work?

I don't need to be a metallurgist to see that the core halves were offset when this cam was made.

Go **** in someone else's thread.

 

[dodgeboy440]

So you are saying I should dremil the side of the lobe to keep adjacent lifters from rubbing the sides of those lobes? Do you grind on new cams to make them work?

I don't need to be a metallurgist to see that the core halves were offset when this cam was made.

Go **** in someone else's thread.

No Bovine Fecal Matter FINE SIR!

JUST COMMON SENSE I Apologize Profusely Oh Great One!

Best Wishes & Mopar2Ya!

So you are saying I should dremil the side of the lobe to keep adjacent lifters from rubbing the sides of those lobes? Do you grind on new cams to make them work?

I don't need to be a metallurgist to see that the core halves were offset when this cam was made.

Go **** in someone else's thread.

 

[BSB67]

Nothing jumps out at me just looking at it.

Can you post a picture of the rub with the cam installed with cam sprocket attached and loaded against the block

 

[threewood]

Nothing jumps out at me just looking at it.

Can you post a picture of the rub with the cam installed with cam sprocket attached and loaded against the block

Give me a few for the pictures. All other lobes, no issues. The lobe pictured and circled rubs on the adjacent lifter enough to bump the cam and sprocket off the machined sprocket face.

I tried two sprockets, the old one and new one. No difference. This is spinning by hand holding the sprocket into the block.

 

[Dodge Bros]

On a flat tappet cam the lobes are tapered and the lifters are wider than the lobe. If the core shift is bad enough the lifter will jump or drop everytime it is rotated and crosses the place were the core shift is. I have seen the lifter drop .002” whenever it crosses the seem on a cam that had terrible core shift. I sent it back, the cam was junk.

 

[threewood]