This motor

[Pablo68]

Can anyone tell me anything about it?

[Big Jon]

Looks like a mid -‘80s, maybe ‘86-‘87, AYK/Race Prep kit motor, although I remember them as having orange endbells. Can we see some pics of the end bell?

[Pablo68]

Thx for the response!

The end bell is black. It also has Race Prep moulded into it.
It came with a partially complete Optima chassis. I'm most likely going to put it back into that chassis.

[moffman]

Wasn’t it from a company called NOS? They did a few different types ether orange endbells with silver can or like this one orange can and black endbell? And I think @Big Jon is right it came in ayk kits (bobcat) 

[Pablo68]

Well if so it's the only bitof AYK I have in my collection (unfortunately, too rare and spendy).

Well, for what it's worth I put it in the Optima it came with and gave the chassis a test run. Not incredibly fast or anything but seems appropriate for the chassis.

[El Gecko]

I don't think it's a kit motor, but it does look like a racing stock motor, sold aftermarket.

I would think it's early 90s by the color combo, pretty sure the early ones were more metallic, or chrome with metallic labels--those are also the ones with the orange or green endbells. Can't remember exactly but I think green cans were usually ROAR-legal which maxed out the timing at like 24 degrees, whereas orange or pink were typically NORRCA which had looser rules, and those were timed up to the mid 40s which is crazy. Timed brushes and super stiff springs and all kinds of tricks to get them running faster than the competitors.

Is there a ROAR91 stamp (or anything else) on the end of the motor can near the mounting screws?

If you find it a bit slow, it could be that it needs a refresh, as many old brushed motors were beaten to within an inch of their life. Probably the comm is hourglass-shaped and the springs are too stiff so the brushes are toast.

A comm cut, new brushes, de-tension the springs a bit (bend them or get new softer ones), and replace the brass bushings for ball bearings, and I think you'll have a peppy little motor there. Assuming the magnets haven't totally de-magnetized over the years, but I've found that's pretty rare.

[Pablo68]

Oh yeah, it doesn't have timing marks, and there are tabs holding the endbell in place, so I don't think it's adjustable. Without knowing anything this makes me thing is was used in some kind of stock class.