Bottom timing gear for crank how loose

[Gabriel Larson]

Putting together a 1969 383 and was about to do the timing chain when I noticed the crank timing gear slides right onto the crank. No tapping required. Should it be tighter fit? I know the damper will probably tighten it up but still thought it would need a hammer to put it in place.

 

[Professor Fate]

No, shouldn't need to hammer it on. If you do, something's not right...

 

[Gabriel Larson]

No, shouldn't need to hammer it on. If you do, something's not right...

Should there be any resistance? It floating on by hand is okay then.

 

[RustyRatRod]

Does it have any rotational slop? If not, run it.

 

[Gabriel Larson]

Does it have any rotational slop? If not, run it.

A little bit almost like either the woodruff key is to small or the slot in the gear is to big I’ll measure it when I get home later. It’s probably no more than 2-3 thousands of slop. Just enough to wiggle a tiny bit

 

[Dana67Dart]

Doesn't the vibration damper wedge the gear into place between it and the crank?

Also on a 1.5" dia circle you have to move the gear 0.013" to get 1 deg of rotation.

0.003" is about 0.229 deg

In my book that is negligible

 

[Gabriel Larson]

Doesn't the vibration damper wedge the gear into place between it and the crank?

Also on a 1.5" dia circle you have to move the gear 0.013" to get 1 deg of rotation.

0.003" is about 0.229 deg

In my book that is negligible

Here’s the amount of play it has

So I hit the woodruff couple times with a hammer on the front end and now the play is gone so I guess problem solved