Dimensions for 94+ Driveshaft > Diff Bolts - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-11-2013, 04:47 PM   #1
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Default Dimensions for 94+ Driveshaft > Diff Bolts

What's teh bolt spec?
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Old 03-11-2013, 04:48 PM   #2
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It's a special shanked bolt to match the driveshaft flange. Buy them from Mazda.
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Old 03-11-2013, 04:51 PM   #3
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Bolt PN is P011-25-123, like $3something each
Nut PN is 1368-25-124
lock washer PN is 9997-11-000
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Old 03-11-2013, 04:55 PM   #4
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Quote:
Originally Posted by leafy View Post
bolt pn is p011-25-123, like $3something each
nut pn is 1368-25-124
lock washer pn is 9997-11-000
<3 <3

Last edited by frostyllama; 03-11-2013 at 05:11 PM.
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Old 03-11-2013, 05:02 PM   #5
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Damnit, I just ordered a bunch of crap from Mazda, didn't think to look for these. Subscribed.

I've been using Grade 8 3/8? coarse bolts since I went with my torsen swap...so for ~70k boosted miles and 10 years or so. The 4 bolts don't locate the driveshaft.
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Old 03-11-2013, 05:05 PM   #6
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Quote:
Originally Posted by TurboTim View Post
I've been using Grade 8 3/8 bolts since I went with my torsen swap...so for ~70k boosted miles and 10 years or so. The 4 bolts don't locate the driveshaft.
The bolts aren't critical since that tit actually locates the drive shaft. Any bolt capable of supplying the required clamping force should suffice. IE the same size in grade 8 or grade 10.8.

Using non factory bolts in SCCA stock, ST, or SP would be protest-able. But the result would be the protester getting punched in the dick and you being penalized 0.001 seconds or less.
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Old 03-11-2013, 05:12 PM   #7
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Quote:
Originally Posted by Leafy View Post
Bolt PN is P011-25-123, like $3something each
Nut PN is 1368-25-124
lock washer PN is 9997-11-000
Even with this info it's surprisingly difficult to find the actual dimensions.
The dealer can't even pull the spec. They want 50 dollars for all the parts which is F'n rediculous as rosenthal only wants like 11 for everything. I'm thinking about buying the bolts and sourcing my own washer and nut.
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Old 03-11-2013, 05:14 PM   #8
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Anyone have the actual (or close) dimensions I could go to napa with? So as to not get completely screwed?
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Old 03-11-2013, 05:25 PM   #9
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Quote:
Originally Posted by TurboTim View Post
Damnit, I just ordered a bunch of crap from Mazda, didn't think to look for these. Subscribed.

I've been using Grade 8 3/8? coarse bolts since I went with my torsen swap...so for ~70k boosted miles and 10 years or so. The 4 bolts don't locate the driveshaft.
3/8 is ~ .953 CM so 10 mm diameter. Anybody got anything on flange length?

Edit: meant the length on the smooth part of the shank. Under the head before the threading.

Edit 2: Picked up 4 M10-1.50 x 30mm grade 10.9 flanged bolts with no shoulder. I'm going to put some thread locker on it. I'll report back in a few weeks to see how they hold up. If you are already ordering from Rosenthal you might as well buy the set: DRIVESHAFT BOLT SET (PKMIAD1104) - $10.95 - PKMIAD1104 . I'm impatient.

Edit 3: flanges too big. **** it I'm buying the stupid set for 50 dollars to my door. Not worth the time.

Last edited by frostyllama; 03-11-2013 at 10:06 PM.
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