From my '91 3VZE. It still spins fine, just looks a little rusty, as you can see from the pic

 

Sure, appearances are important.

Okay, I wouldn't worry about the rust. In general, if the idler turns without you being able to feel ANYTHING, it's okay.

On the other hand, you can pick up an aftermarket timing belt "kit" (belt, two pulleys, seals) for about $85. http://www.ebay.com/itm/88-92-3-0-L-...-/200545297637

 

Getting that coolant passage to seal would be easier if you replace it, and since you already have it out in your hand...

 

Replace it !!

Other wise this will drive you crazy !!!

Thinking I should have replaced it now your just waiting for it to fail and cause problems

Repeat on a loop every time your not really focused on something else.

 

Well I have everything torn apart right now because I blew a head gasket, so I'm already spending a good chunk of change on that. but thanks for the comments...should replace, but isn't completely necessary. We'll see where the bottom line ends up on the project.

 

ime, those pulley bearings shouldn't really spin "freely". iow's, there should be enough grease in there to offer some resistance. by the time it spins freely...without any resistance....even if there's not a chunky feeling...there's little to no grease

 

Okay, good to know. I'll go spin it again and see what it feels like.