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Caliper banjo bolt

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Best Answer r2hubert , 03-22-2013 03:21 PM

I wanted to post a followup on my issue. I used a tap M10x1 and cleaned up the threads on all calipers. It was really easy and I can now put the bolts without issues.

 

Thanks for the replies!

 

-- Renaud

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#1
r2hubert

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I just bought some re-manufactured calipers for my 1990 miata. And the banjo bolts don't fit into the new front calipers.

So I have couple questions. First does front and rear banjo bolts the same?

What are the specs of the banjo bolts where I can I buy some.

I have a feeling from what I read around that the reman ones are coated with something that might make it hard to thread the bolts in.

The front bolts fit with no effort in the new rear calipers but no chance to get more than one thread in on the front ones.

 

Let me know if you have any advice.

 

Thanks



#2
Bench Racer

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The re-maned calipers are known for messed up threads during the process. Just had one on a 1990 miata F production car. The owner took the caliper back to parts store along with the banjo bolt and found a caliper the bolt would fit in.

 

Check for at parts stores, Google or mazdamotorsports.


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#3
SaulSpeedwell

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I just bought some re-manufactured calipers for my 1990 miata. And the banjo bolts don't fit into the new front calipers.

So I have couple questions. First does front and rear banjo bolts the same?

What are the specs of the banjo bolts where I can I buy some.

I have a feeling from what I read around that the reman ones are coated with something that might make it hard to thread the bolts in.

The front bolts fit with no effort in the new rear calipers but no chance to get more than one thread in on the front ones.

 

Let me know if you have any advice.

 

Thanks

 

Poorly remanufactured calipers will have been "sandblasted", resulting in cobbled threads.  You have a couple options.  You can take an existing banjo bolt, Dremel a slot across the thread, thus making a makeshift "thread chaser" to rehabilitate the calipers.

 

Once you run a sacrificial bolt all the way down and back, it should seal up - but - a caliper that has been carelessly sandblasted by a cut-rate rebuilder is not a caliper you want on your hotrod. 

 

My personal opinion is that the best calipers you can put on your car are "used" original Mazda calipers, that have been inspected and/or properly rebuilt.  I have seen such calipers from many of the trusted sources on here -  specifically, ESA, PlanetMiata, and ThePartsGroup. 


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#4
r2hubert

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✓  Best Answer

I wanted to post a followup on my issue. I used a tap M10x1 and cleaned up the threads on all calipers. It was really easy and I can now put the bolts without issues.

 

Thanks for the replies!

 

-- Renaud






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