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Caliper bolt spacing?


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#1 njoz1200ute

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Posted 02 May 2017 - 12:30 PM

Anyone know why my caliper bolt spacing is off by 8mm compared to the new ones that just came from RockAuto?

 

 

New calipers arrived in the mail


Did I order the wrong ones?

Bolt spacing is 8 millimeters too short and it does not Center itself on the rotor

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#2 njoz1200ute

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Posted 02 May 2017 - 12:30 PM

My struts I were told are from a Aussie 120y if that helps (yes I imported them), not sure what year.



#3 datsunfreak

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Posted 02 May 2017 - 04:33 PM

Two most obvious answers:

 

1. RockAuto sent you the wrong shit (been known to happen).

 

2. Aussie 120Y uses calipers that were never sold on a USDM car. 


It's your car, just don't ruin it.

 

It's also not my money, so i'll suggest the most expensive option. 

 

 


#4 datzenmike

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Posted 02 May 2017 - 04:51 PM

3/ they are not aussie 120Y struts.

 

 

What is the distance between holes center to center???


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#5 Doctor510

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Posted 02 May 2017 - 05:07 PM

75.36mm  just like the caliper shows.  He used the right edge to right edge method, it's a lot more accurate.



#6 njoz1200ute

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Posted 02 May 2017 - 05:45 PM

Arggggghhhhhhh

So frusterating. Apparently some 120ys had a caliper bracket and some did not. Impossible to tell if this is even a 120y strut or B310 or 1200

I have old cruddy brakes that came with the struts but they dont even seem to fit right either.

#7 datzenmike

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Posted 02 May 2017 - 07:47 PM

PL510 and HL510 are 76mm although different calipers. I don't know if they would fit your rotor or not.


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#8 njoz1200ute

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Posted 02 May 2017 - 08:18 PM

Yes but I don't need calipers that are 75 millimeters. That's what they sent me I need calipers that are 83 millimeters

#9 datzenmike

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Posted 03 May 2017 - 05:20 AM

Still nothing... 89mm are 280zx and S110. Obviously these are somewhere below this.


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#10 njoz1200ute

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Posted 03 May 2017 - 05:43 AM

It is from Datsun Sunny 1976-1978
54303-H7405 STRUT, LH

AMPCO was a Datsun factory supplier

B210 used many different strut part numbers, but they look mostly identical. Those that start with H10/H50 have the small stub axle/large bearings, and those that start with H74 have the large stub axle/small bearings


What was the US version of the 1976 Sunny?

#11 datzenmike

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Posted 03 May 2017 - 06:24 AM

B-210???


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#12 datsunfreak

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Posted 03 May 2017 - 01:36 PM

Apparently some 120ys had a caliper bracket and some did not. Impossible to tell if this is even a 120y strut or B310 or 1200

 

They are NOT B310. I can promise you that. 

 

In the US, only the 1200 used bolts and nuts to hold it onto the steering arm. Everything else used threaded holes in the strut base and just bolts (no nuts). 

 

Also, the B310 used the larger lower bolt spacing, a la 510/610/710/A10/280ZX. 


It's your car, just don't ruin it.

 

It's also not my money, so i'll suggest the most expensive option. 

 

 


#13 njoz1200ute

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Posted 03 May 2017 - 02:11 PM

Good info DF.

Looks like im up shits creek.

1. Get my aussie brakes stripped and rebuilt. Make them work somehow so they center on the rotor.

2. Scrap my new suspension / steering. Buy a swap like possibly 280zx struts and new brakes.

#14 datsunfreak

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Posted 03 May 2017 - 02:12 PM

This. 

 

1. Get my aussie brakes stripped and rebuilt


It's your car, just don't ruin it.

 

It's also not my money, so i'll suggest the most expensive option.