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MSD Distributor
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<blockquote data-quote="CHOP SHOP" data-source="post: 1522931" data-attributes="member: 17493"><p>Im with binder on this one.</p><p></p><p>Even the common problem cant be what happened. In most cases the pump locks up and the gear connects the pump to the cam and the dist so the dist roll pin shears to let the engine spin but not the dist and the eng dies. and repairs are needed.</p><p></p><p>On the mopar (im no expert on mopars) I think the cam and pump are one connection and the dist just sits in the gear with a tab. Even if the pump locked up and chewed the gear, I dont think the dist has enough momentum/inertia to shear off the shaft just from the weight of the rotor and advance mech spinning.</p><p></p><p>At 800 rpm that shaft should be able to take a dead stop with out busting like that.</p><p></p><p></p><p>I would look at the side of that Oring seal for a HARD impression of contact to see if the manifold hole is off and putting a side load on that dist shaft.</p><p></p><p>Ive had old manifolds with sloppy holes that dont like todays machined fit dist. Ive also seen the mounting pad be crooked to the lip on the dist making crooked pressure when clamped down.</p><p></p><p>Just some things to check.</p></blockquote><p></p>
[QUOTE="CHOP SHOP, post: 1522931, member: 17493"] Im with binder on this one. Even the common problem cant be what happened. In most cases the pump locks up and the gear connects the pump to the cam and the dist so the dist roll pin shears to let the engine spin but not the dist and the eng dies. and repairs are needed. On the mopar (im no expert on mopars) I think the cam and pump are one connection and the dist just sits in the gear with a tab. Even if the pump locked up and chewed the gear, I dont think the dist has enough momentum/inertia to shear off the shaft just from the weight of the rotor and advance mech spinning. At 800 rpm that shaft should be able to take a dead stop with out busting like that. I would look at the side of that Oring seal for a HARD impression of contact to see if the manifold hole is off and putting a side load on that dist shaft. Ive had old manifolds with sloppy holes that dont like todays machined fit dist. Ive also seen the mounting pad be crooked to the lip on the dist making crooked pressure when clamped down. Just some things to check. [/QUOTE]
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