HELP!! Wont start fo break-in!

dodgetkboy78 said

Starter could be old. Got a newer started laying around? (Non reduction type?)


I totally disagree on the "tight motor" theory, never put one of those together before, they all were easily turned with a short 1/2" ratchet. The rope seal motors are a tad stiffer, ,but still, the stater shouldn't be affected much.

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An old starter could create a slow crank problem. Even the new style Mopar starters are gear reduction. They are permanent magnet motors. That's why they are so small, no field coils. A freshly rebuilt engine will be tighter when new than it will ever be. (unless you are building a race engine with loose bearing clearance, loose pistons and low tension rings.) Once the break in moly grease gets replaced with engine oil in the bearings and the rings get seated and everything wears into each other the engine loosens up.