kenzo42

iTrader: (6)

PO overtorqued differential fill hole so tight that the washer wedged upwards 360 degrees around the bolt.

Anyway, when I tighten the bolt, it just keeps spinning. Fluid is slowly leaking too.

Helicoil? Or is there something else better? I've never done this before.

Thanks.

samnavy

iTrader: (7)

Is the fill hole on the dif cover or on the main pumpkin? If cover, then call PlanetMiata and get a new one. If body, and you can get the bolt out, then just use a cork from now on.

Milton Tucker

iTrader: (2)

Take the plug out, go to autozone, see if they have a "oversized" plug. If they look at you stupid, go and look on there "HELP" rack.

kenzo42

iTrader: (6)

It's the top bolt hole. The bolt is out, but the hole is stripped.

Milton Tucker

iTrader: (2)

worst case, you sorce a new housing. 1.6 diff should not be more then 40 bucks.

patsmx5

iTrader: (16)

To address your "better than a helicoil" question, there is nothing better than a helicoil. That's a whole 'nother thread though. Don't be afraid to use one.

kenzo42

iTrader: (6)

What's a 'cork'? Does it still thread into the hole?

patsmx5

iTrader: (16)

Hmm, If it were my car, I'd measure the diameter of the hole, and drill and tap it the next size up. You could also try runing the correct tap through it to "chase" the threads and see if that's enough to get it to bite again. I've never heard of an oversize plug, but if they make them try that first for sure. Oh yea, no VLSD in there.

bryantaylor

iTrader: (5)

just put some jb-weld on it. there is no pressure or anything crazy going on there

y8s

iTrader: (8)

Very true. And you only have to monkey with it every 50,000 miles or so.

kenzo42

iTrader: (6)

Ended up putting 2 washers on it. Seemed to grab the remaining threads well. Hasn't leaked since last night. Only time will tell.