steronz
steronz Reader
9/8/17 12:29 p.m.

Going to Summit Point this weekend, in NoVa now, investigated a clunking sound when shifting and discovered that my PPF was about to fall off the diff. Rear bolt was barely hanging on, front bolt is gone along with the bottom sleeve. What to do!? 

EvanB
EvanB GRM+ Memberand UltimaDork
9/8/17 12:43 p.m.

I have a spare bolt and maybe sleeve but they are in columbus. How does it feel if you just torque down the remaining bolt?

steronz
steronz Reader
9/8/17 12:55 p.m.

Good question... Seems fine but I'm a risk taker, would anyone else go on  track with 1 bolt there? Check it every session? 

Snrub
Snrub Reader
9/8/17 1:11 p.m.

Not sure if that's a great idea...    Use lots of red loctite?  :)

steronz
steronz Reader
9/8/17 1:12 p.m.

Anyone know length and thread pitch?

ManhattanM (fka NY535iManual)
ManhattanM (fka NY535iManual) Reader
9/8/17 1:28 p.m.

Based on what I saw another SM do on track when it went out with loose PPF:  DO NOT DO IT.

EvanB
EvanB GRM+ Memberand UltimaDork
9/8/17 1:29 p.m.

I can measure when I get home. My car did rallycross with the diff held in by a chain when the housing ear snapped so I wouldn't be too worried about it if you keep an eye on it.

steronz
steronz Reader
9/8/17 1:39 p.m.

Evan, love it.

 

May have found one, heading to Tysons Corner. 

JoeTR6
JoeTR6 HalfDork
9/8/17 2:13 p.m.

I was going to suggest Priority Mazda, but suspect you already found them.

WonkoTheSane
WonkoTheSane GRM+ Memberand Dork
9/8/17 2:49 p.m.

Yeah, or a junkyard, or a craigslist WTB.  I'm a risk taker, but I wouldn't risk that one.

The problem that you have is since there's only 1 out of 2, and those bolts are pinching the PPF onto the diff, with one you're not going to keep it from laterally shifting @ the pinch point.  I doubt you'd have a vertical problem, but the lateral motion is going to work the one loose.

Don't loctite those bolts in, or you're going to hate yourself later.

Hal
Hal UltraDork
9/8/17 3:54 p.m.

If you can't find it elsewhere, there are several Miata teams/fabricators with shops at Summit Point.

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