CK5
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HEI rebuild, anyone done it?

If you are going to go that far, you need to pull it completely apart and see if the shaft is shot.
 
also is it worth it to replace the electronics while im in there? do they wear out or just work/dont work type of thing??

balzer
 
the electronics don't "wear out", but they do go bad after alot of use. if you have the money its a good idea to replace the module and the pickup coil. the pick up coil is usually around $15 and the module is around $10. i would replace the pickup coil while you have it apart because you have to remove the distributor and pull the shaft out to replace it.

also every time ive pulled the shaft out of the distributor body, a buildup of oil on the shaft keeps from pulling it out, if you beat it out, you may damage the bushing in the top or at the least pull it out of the body. i always spray some brake cleaner in the holes around the gear and work it up and down twisting and eventually it comes out.
 
When the pick up coil goes bad, it's usually that the wires crack where they come out of the pick up from flexing with the vacuum advance. It is a good place to start trouble shooting for a high speed miss.

Most of the advance kit weights for these are junk IMHO, they don't locate well on the pins. I usually just rob the springs out of the kit to get the curve in earlier.
 
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