Stupid nut size for stupid PPF bolt
 

So I just pulled my motor and tranny and put it back.

The PPF bolts onto the diff with two bolts.

The rearmost bolt does not thread into anything so I assume some stupid nut is supposed to hold onto it place where it pokes out above the diff.

What is the size of that stupid nut? They didn't have that shizat at home depot.


Side queszation. What is the tip/trick to get the shifter to sit in the middle of the shifter hole. My shifter is kinda sitting towards the driver's side which feels kinda wierd.

The tip for getting the shifter to sit in the middle is to correctly install your engine and transmission. I don't see how it could not be centered. There may be a bit of adjustment in the PPF if you loosen the bolts, adjust the trans whichever way, and then tighten while someone holds it in place. But there can't be whole lot of play in there.

You sure your engine mounts aren't sitting on something? Did you use the engine mount "cover" things?

As for the PPF, I thought that "nut" was part of the PPF. As in, welded to it. Or at least press fit.

There is a nut for the frontmost bolt. Not the rear.

Just for you, Faeflora, I'm going outside in this 5F weather to check on this and get you a picture. BRB.

Also why did you remove the PPF at the diff?

Yeah, Faeflora, you are mixed up bro after looking at how my PPF was.

http://virkki.com/jyri/miata/ppf/

Reverse of this.

I have no frikken clue. I guess because it seemed like a good idea at the time. :|


?????? OK well the way my ---- is, the rearmost bolt does not screw into anything.

Take bolt to your nearest hardware store,
Test nuts,
Profit

Only solution you've got then, bro. Unless you plan on ordering them online and waiting several days for them at least, you'll have to go to the hardware store anyways.

...

Okay, my sense of humor failed to come across on the internet (No tone of voice to reflect sarcasm ftl), and I do apologize for failing to express that in my previous post.

Fae, there are special nuts on the PPF. They have specialized splined collars to inset into it/fit into the PPF. You won't find them at a hardware store. They are specialized Mazda nuts for the specific PPF application. However, they also take a good deal of force to remove - they are, as another poster mentioned, basically "welded" into the PPF because of how they fit. I cannot imagine how you got them out and misplaced them - if you removed them, you would have had to have worked at it with a hammer at least as they are press-fit with a splined collar. This is what FRT and I have been getting at in this thread.

Are you sure you are using the correct bolts?

yeah I just took my PPF off a week ago. There are two nuts on each bolt that must come out to remove the PPF from the rear diff. They have a shoulder on them that goes into the PPF...a regular ol nut might work but it will be THE SUCK. Don't do it. Find the correct nut.

Call me crazy, but aren't the pressed nuts clearly visible in the picture he just posted? I'm not at home to check, but I did this not to long ago. If I remember right one bolt is larger than the other and this was important in putting it together.

I think hey are all the same diameter


Per the link, "the bolt closest to the diff simply screws out". Mine slides inand out. No screwing. Ha

Both bolts on the differential side have "press-in" nuts. The 2 nuts are identical as far as I know. So you have one but lost the other.

You should have told me last week since I was at a junk yard pulling a diff.

Anyways, as far as I know they aren't sold separate of the PPF.

Why do you break the stupidest sh!t

Probably everyone did stupid ---- at one point. We just didn't make a thread about it :rofl:

OMFG if i lost that ---- well fuc that. I cannot gay out and skip this ----. I broke my old ppf at 250hp so i dunwanna f around on this now. Arrrgggggg

Thing is if there is indeed a press in threaded nut thing, it would have to go into the diff at the top. There is no room as it is tight fit on the bottom.

Im gonna use any old fukin bolt and nut that will sorta fit if i cannot get thi shi figured out

Are they all the same length? Is that front bolt that's already in perhaps a bit longer and supposed to go in the rear hole?

arrghhh OH FUC I SEE THE STUPID WASHER THING ON THE TOP IN THE PIC NOW. BALLS

Fortunatly i mighy have a spare bustd ppf aomewher

Fae they do go into the diff.

Any random nut won't work, because they fit into the diff to keep it tight. If there is play there ---- will break.

---- breaks every time Fae plays - :rofl:

Actually, it's probably good that Fae made a thread about this.

Thinking about it, he would have likely broken some stuff he really would not have wanted to break if he just found any old nut instead of posting this thread.

As I am in the middle of doing diff bushings and removal of the diff housing, I can tell you that, you don't need to tap the threaded collars out of the ppf. The front most lower collar has to be pried out about 3/4 of an inch to clear the diff, it has an indention for prying. It can come out all the way but isn't a must. Then thread the bolt back it about 5-6 turns and pull DOWN on it to pull the spacer out of the top of the diff mount. This will only move about 1/2in or less. The rear most PPF mount bolt will just thread out and that's it, No special action there. The two bolts are different as well. As for using a nut and washer on the top of the PPF to replace the proper threaded, splined, spacer that keeps the PPF from deforming and holding the entire drive line in-line so that everything works as designed, no that's not a good idea. Mazda says, "replace as a whole unit." Yea right.

^Maybe that is what I was thinking. I get confused. The last time I pulled the PPF was after I had dropped the diff with the PPF on it. So it took like 2 seconds and was easy.

I highly recommend that EVERYONE check over their PPF frame and tighten everything up. I had 2 of the front ppf bolts fall out and by the time I realized it the 3rd one was more than halfway out. Not fun driving around with the shifter bobbing up and down.

Failflora, try this - http://www.good-win-racing.com/Mazda...ml?id=ECorWkkn

and this - http://www.ebay.com/itm/90-05-MIATA-...sories&vxp=mtr

better yet, this - http://www.ebay.com/itm/90-05-MAZDA-...sories&vxp=mtr

Thanks chipmunk murder. Yours truly, Champion to Animals Everywhere. Seriously.


I just crawled under my car. I am indeed missing the little threaded press in washer thing for the rearmost bolt.

You can see how the donut washer thing is threaded, clearly, in that ebay link vash posted.

Will be buying now.

just weld the ppf to your diff you giant pussilyah
if you need to remove it later you can just sawzall it off