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521 Wheel cylinder banjo bolt thread size.


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I got a new wheel cyl for my 1972 pickup at Rockauto and the banjo thread was a M9x1 but my original banjo bolt is a M10x1. Rockauto show's it to be the right wheel cyl. but I think they are wrong. Any ideas?

Edited by tjsilvasr
added year of truck
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8 hours ago, tjsilvasr said:

I got a new wheel cyl for my 1972 pickup at Rockauto and the banjo thread was a M9x1 but my original banjo bolt is a M10x1. Rockauto show's it to be the right wheel cyl. but I think they are wrong. Any ideas?

I have seen different sizes for the bleeders but not necessarily for the banjo....

Also sometimes they like to give us 620 parts which are metric....

 

What the problem using what they gave you other than the size of the bolt?

 

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I believe it's 3/8-24 on the earlier trucks.

 

If they did sub you a different part with metric threads, you should just be able to install it with the new metric banjo bolt. Datsun pickup wheel cylinders have only the one threaded port, right? And then they use the y-shaped fitting with the bleeder on it, right?

Edited by Stoffregen Motorsports
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Wow, I can tell I am going to like this site!

Thanks for all the input.

Yes that is correct 1 thread port, and y banjo but the bleeder is on the banjo bolt head.

But my original wheel cyl. and banjo bolt is threaded to M10x1.0 not 3/8x24.

So: My wheel cylinders are threaded to M10x1.0, but now I need the 3/8-24 banjo bolt because the new wheel cyl. are threaded different.

Anyone know where I can get two of them?

 

SPECS ARE

The overall length is 2".

The banjo thread is now 3/8x24.

From the base of the head to tip of thread is 1 3/8".

And of course it needs a bleeder nipple hole 🤦‍♂️

Can I get them from Nissan?? LOL 


 

It's such a shame because everything is cleaning up so nicely, but the banjo bolt stopped me dead in my tracks.

Edited by tjsilvasr
I messed up
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4 hours ago, tjsilvasr said:

Wow, I can tell I am going to like this site!

Thanks for all the input.

Yes that is correct 1 thread port, and y banjo but the bleeder is on the banjo bolt head.

But my original wheel cyl. and banjo bolt is threaded to M10x1.0 not 3/8x24.

So: My wheel cylinders are threaded to M10x1.0, but now I need the 3/8-24 banjo bolt because the new wheel cyl. are threaded different.

Anyone know where I can get two of them?

 

SPECS ARE

The overall length is 2".

The banjo thread is now 3/8x24.

From the base of the head to tip of thread is 1 3/8".

And of course it needs a bleeder nipple hole 🤦‍♂️

Can I get them from Nissan?? LOL 


 

It's such a shame because everything is cleaning up so nicely, but the banjo bolt stopped me dead in my tracks.

I have not seen those banjos available,  not saying they aren't out there but I always thought they were hard to find....

If you are sure the you have metric banjo bolts it might be easier to return what you bought and purchase some 620 wheel cylinders...

I looked them up and they do have different part numbers.... 

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7 hours ago, Crashtd420 said:

Directly under where you type is an add file button.... 

20210729_082805.jpg

I don't have that option, I saw it the other day but now all I have is insert image from URL on the bottom right.

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Well, I just pulled the driver side banjo bolt and it is 3/8x24. The bad boy screws right in the new wheel cylinder.

 

Still can't insert pics. I was able to attach some the first day but after I edited a error the add file option disappeared.

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On 7/28/2021 at 4:52 AM, Crashtd420 said:

I have seen different sizes for the bleeders but not necessarily for the banjo....

Also sometimes they like to give us 620 parts which are metric....

 

What the problem using what they gave you other than the size of the bolt?

 

No problem, it bolts in and should work just fine if I can get a banjo bolt in a 3/8x24 to connect it to the banjo.

FYI; Apparently a M9x1.0 and the 3/8x24 thread is so close that they both work.

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