Need help finding a tool.

I want to say that it is called a runout indicator. Could likely be wrong.

Need to check how much play is in a '99 Miata engine (potential bearing play, it's a known issue), and don't want to pay an arm and a leg for the tool.

Couldn't you just use a regular dial indicator? There are tons of different mounting systems, or you could just make your own clamps for your particular application. Looks like they're $12 at Harbor freight, and another $10 for the magnetic stand. http://www.harborfreight.com/1-inch-travel-machinists-dial-indicator-623.html

mistanfo wrote: need help finding a tool

look in the mirror....

sorry, someone had to say it

Put something solidly mounted near the end of the shaft, like a magnetic base. Instead of a dial indicator, push it in, use a feeler gage, pull it out, use a feeler gage. Play = pushed in gap minus pulled out gap.

Just install a new thrust bearing and be done with it. Or use the above suggested operations.

Installing a new thrust bearing invloves removing the engine. Which I hope to have to do. That will significantly reduce the price of the car to me, since the owner has already had the engine replaced approximately 30,000 miles ago for over $3000. $5000 book value - $3000= $2000. Minus a gouged front bumper (cover only) and a badly dinged passenger side fender (both parking lot events while he was performing surgery)= even less expensive. Looking to have this well under Challenge budget.

Raze wrote:

mistanfo wrote: need help finding a tool

look in the mirror.... sorry, someone had to say it

I was going to note that it shouldn't be hard, they seem to be everywhere!

One warning - if it's really far gone, the crank starts to machine into the block. That pretty much wrecks both. If you can feel pulsing through the clutch pedal at idle you're probably too late.