Due to the difficulty of finding replacement ring gears at a reasonable price for the Mazda auto tx flex plate I suggest we use the current flex plate and merely tig weld the damper to it.
Your current starter is sure to still fit and work.

I was quoted ring gears $95 each from a company in NZ with $95 shipping by boat. No telling how long that would take.

Mark Steitle brought up the issue of room for a thrust
bearing between Tracy's spline flange (brown in the 3D)
and the PSRU adapter plate. Simple solution. Reverse it.

That gives more than enough room for a thrust bearing.

Here are the 3D's.

Some of the 2nd gen current flex plates have large holes near the
center that weaken them. The solution is tig weld in a plug.
The 3rd gen did away with the holes.

I just bought a 13B auto tyranny flex plate on ebay for $12.
Shipping and handling was $30 :)

Lots on ebay for $50.

Paul Lamar

Just a thought, the ring gear can be easily cut from an existing flex plate, welded to new one. easier than cutting many plugs and welding them into the old plate.
C. Smith

That would add about $150 to the cost as there is labor involved cutting off the ring gear and making
and entirely new flex plate. If that is OK for everybody I will do it that way. The plugs would be NC laser cut
out of 4130 scrap.


My guess on the cost right now is $250 +- $50

Paul Lamar


If a set of plugs is included in the "cost right now" I'll go with it. Is this a weld yer self kit, or ship to you and back deal?
C. Smith


ship to me. We will drill and bolt it on. And then check the run out with
dial indicators.

Paul Lamar

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