So I replaced my starter today and payed the $5 core charge and kept my original starter that I'm gonna rebuild and use as a back up... Install wasn't that bad except for almost knocking myself out on the pumpkin once the top bolt broke lose.

Anyway, I thought this was interesting. Looks like one of the connectors was replaced with a "LarryB's Connector" and it is the one that looks to be wore out, the stock one looks brand new.

 

Yeah, most of the ones I take apart have one contact all worn out and one that's still like new. I attribute it to electron flow. Interesting that it had already worn out a set of contacts though, must be a lot of miles on it.

 

the one that's worn the most is always the battery side

 

^^^^^they wear at the same rate as the originals just have more contact surface. theres really no need to change the unworn side either.

 

Ok, makes sense. Obviously that's what the previous owner did.

 

The way I understand it the reason this happen is that one side contacts first. Since it does, there is no arc to erode the contact. As the other side hits it sparks and erodes. In short, normal operation, and not indicative of a defective part.

The plunger you will note has a spring that engages the bridge contact plate to absorb the difference.

 

They should've been replaced with matching size imo. It's like you were to replace only one of the brake pads instead of two.

 

Theres really no need to replace the unworn side and brakes r brakes. apples vs oranges. and if u feel the need replace it forget about gould hes kinda a rip

http://www.sherco-auto.com/contacts.htm

 

I edventually replaced my stock starter (had 500,000kms on it) it went thru 2 sets of stock contacts before installing the larry b type. anyway before installing the aftermarket starter I pulled the cover and discovered that it had one smaller and one larger contact as pictured above, I think thats the normal thing for rebuilds (just a guess), I have opened two 3rd gen starters and they come stock with the larger contacts