s13 mid-driveshaft bolts? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

zerog · 07-24-2019, 11:49 AM

I found that one of the bolts is missing from the middle u-joint on the driveshaft of my 92 s13. These are not hex-head bolts, they are shaped bolts that lock in place to allow you to tighten the nut with only 1 wrench. Anyone know where I can buy these, or a part number? Or a size so that I can replace the missing one with a regular hex bolt.

I did some searching but I'm only finding info for the bolts that connect to the differential.

Thanks!

zerog · 07-27-2019, 04:56 PM

I removed one of the 3 remaining bolts, this is what it looks like, you can see the head is shaped to hold the bolt in place and prevent it from spinning. I believe the size is M8 x 1.25, longer than 25mm but shorter than 30mm (I used a 30mm for replacement). The nut is 12mm.

This bolt with a flanged head would not fit due to the flange, so I cut part of it off with a Dremel to create a custom shaped bolt, it fit great.

I was not able to find a bolt at the hardware store in this size with threads on only half of the shaft like the original bolt unfortunately. Thinking about just replacing the 2 piece driveshaft with a 1 piece one.

07-24-2019, 11:49 AM	#1
zerog Join Date: May 2019 Location: USA Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	s13 mid-driveshaft bolts? I found that one of the bolts is missing from the middle u-joint on the driveshaft of my 92 s13. These are not hex-head bolts, they are shaped bolts that lock in place to allow you to tighten the nut with only 1 wrench. Anyone know where I can buy these, or a part number? Or a size so that I can replace the missing one with a regular hex bolt. I did some searching but I'm only finding info for the bolts that connect to the differential. Thanks!

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07-27-2019, 04:56 PM	#2
zerog Join Date: May 2019 Location: USA Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	I removed one of the 3 remaining bolts, this is what it looks like, you can see the head is shaped to hold the bolt in place and prevent it from spinning. I believe the size is M8 x 1.25, longer than 25mm but shorter than 30mm (I used a 30mm for replacement). The nut is 12mm. This bolt with a flanged head would not fit due to the flange, so I cut part of it off with a Dremel to create a custom shaped bolt, it fit great. I was not able to find a bolt at the hardware store in this size with threads on only half of the shaft like the original bolt unfortunately. Thinking about just replacing the 2 piece driveshaft with a 1 piece one.