My Datsun 240Z

[Captain Obvious]

Not sure it really matters, but I think the 55425-N4300 is the strap for the 280's with the R200 diff.

if you've got a 240, then I believe you want the 55425-E4100.

My measurements indicate that the two straps are different lengths.

[bartsscooterservice]

Does it really matter ? I can't seem to find 240 straps. I do have this one also, but the previous one snapped:

 

Datsun 240Z 260Z 280Z Differential Arrestor Band Belt Rear 413 | eBay 

[bartsscooterservice]

1 minute ago, bartsscooterservice said:

Does it really matter ? I can't seem to find 240 straps. I do have this one also, but the previous one snapped:

 

Datsun 240Z 260Z 280Z Differential Arrestor Band Belt Rear 413 | eBay 

if i put this one, next to the used oem one from the 280z they are the same length and width 

[bartsscooterservice]

On 9/21/2023 at 3:39 AM, Captain Obvious said:

My measurements indicate that the two straps are different lengths.

🙄

[Yarb]

Something I’ve run into more times than not is Sellers assume that what they are advertising fits the entire series. I’m sure there is not a lot of research going on before running the add.

[Captain Obvious]

All the pics are dead, but here's a thread I put together a bunch of years ago about my diff strap project:
https://www.classiczcars.com/forums/topic/55955-my-new-diff-mount-and-strap-project/

And here's a couple of the pics that don't show up in that thread anymore. Here's the older and newer side by side:

 

I found early strap to be 537mm and the later strap to be a little shorter at 529:

And here's what I ended up making for my car. I used heavy duty nylon web strap and made my own:

Edited September 23, 2023 by Captain Obvious

[Patcon]

2 hours ago, Captain Obvious said:

And here's what I ended up making for my car. I used heavy duty nylon web strap and made my own:

How has it held up? How much abuse has it received?

[bartsscooterservice]

creative, i like it !   Would those few mm really matter ? I can put the oem 280 strap on, or the one pvc one, that snapped only after 2 years.

 

[Captain Obvious]

I doubt the difference in length really matters. I just wasn't sure if you were going for a complete stock result or not. From a functional standpoint, I think you'll be fine.

21 hours ago, Patcon said:

How has it held up? How much abuse has it received?

I haven't even really thought about until this thread came up. So the good news is my diff isn't clunking, but I haven't looked at it since I put it in. Maybe checked it once to make sure everything looked OK, and then completely forgot about it. So... I'm guessing it's fine? 

[bartsscooterservice]

the oem 240 belts are almost none to find anymore, i'll use the 280 one then, I bet it was more flexible when new haha, it became stiff, like old people 

[Captain Obvious]

3 hours ago, bartsscooterservice said:

it was more flexible when new haha, it became stiff, like old people 

I get that!! 

[bartsscooterservice]

280 nos belt is on. Seems fine to me... 

 

Removed the taillight panel to get that original look and treat surface rust beneath the rear panel...

 

Fun thing is i found a photo of one in the Nissan museum that is glossy? 😂