Still trying to find out a cheap way to give 13" rotors to the '84's
#61
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#62
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so thats the number? the euro S stuff, 80 to 86 is all the same and is the same as the US '82-86early
can someone confirm?
plus, do i need to use steel, or will some kind of alloy aluminum work for this adapter plate, being only 9mm thick. (.35"thick)
bolt type? M12 1.5pitch? I guess the stock bolts will bolt right to the new adapter plate with its new cut threads, and some shorter ones could be used to mount the plate to the spindle mounts.
can someone confirm?
plus, do i need to use steel, or will some kind of alloy aluminum work for this adapter plate, being only 9mm thick. (.35"thick)
bolt type? M12 1.5pitch? I guess the stock bolts will bolt right to the new adapter plate with its new cut threads, and some shorter ones could be used to mount the plate to the spindle mounts.
#63
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That is AWESOME!! I want some. ![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
#64
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are you sure? Im talking about an '82 for this upgrade. I assume that it was the same as the later model '84s. no?? I do know that there was an aluminum ball joint upgraded needed, but didnt think that would effect the spindle type or design.
either way, we do know that the 80 to 86 use the same calipers, so why would the bolt spacing be different? is it 103mm CTC???
either way, we do know that the 80 to 86 use the same calipers, so why would the bolt spacing be different? is it 103mm CTC???
So to confirm, the 79-82 spindles have the same AXIAL mounted caliper ears....
and what is the center to center measurement?
The 83-86 "S" are also AXIAL mount and their C2C measurement?
87-up S4, GT, GTS are radial 130mm?
Also according to BigAl1 the 80 Euro S is different?
and what is the center to center measurement?
The 83-86 "S" are also AXIAL mount and their C2C measurement?
87-up S4, GT, GTS are radial 130mm?
Also according to BigAl1 the 80 Euro S is different?
#66
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in looking at the picture, why cant we use GTS rotors again? (greater offset) It looks like there is two inches from the rotor to the lower ball joint. i thougth it was much closer.
#67
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928 GTS rotor is
322 mm Dia
32 mm thick rotor plus 45.3 mm Hat
77.3 mm total height
I use 4130 steel if I can't get an alloy bracket design strong enough. You can get 0.375 thick bar and mill it to 9mm and be plenty strong.
322 mm Dia
32 mm thick rotor plus 45.3 mm Hat
77.3 mm total height
I use 4130 steel if I can't get an alloy bracket design strong enough. You can get 0.375 thick bar and mill it to 9mm and be plenty strong.
#68
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#72
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From this pic of an 84 it looks like the lower ball joint will be the limiting factor.
#73
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I don't think you will get the correct caliper location using a flat plate as an adapter. the adapter will need to have some sort of step in it to locate the caliper correctly axially over the rotor unless the rotor spacing change happens to match the thickness of the original mounting tabs.
I'll try to sketch this up to clarify and post back.
I'll try to sketch this up to clarify and post back.
#74
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Or get a different offset caliper....
I did a caliper swap on a 240z using 300zx calipers....all the Nissan mounting holes are 100mm spreadwidths, so these would be the 4-pots to mod up to these double-axial adapters.....
![](http://i94.photobucket.com/albums/l96/xschop/r33backmeasured8jx.jpg)
![](http://i94.photobucket.com/albums/l96/xschop/r33sidemeasured2la.jpg)
I did a caliper swap on a 240z using 300zx calipers....all the Nissan mounting holes are 100mm spreadwidths, so these would be the 4-pots to mod up to these double-axial adapters.....
![](http://i94.photobucket.com/albums/l96/xschop/r33backmeasured8jx.jpg)
![](http://i94.photobucket.com/albums/l96/xschop/r33sidemeasured2la.jpg)
![](http://i94.photobucket.com/albums/l96/xschop/r33topmeasured6zu.jpg)
#75
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That is exactly the idea. We make the plate to a thickness that equals the offset of the rotor, in this case, 9mm.
I don't think you will get the correct caliper location using a flat plate as an adapter. the adapter will need to have some sort of step in it to locate the caliper correctly axially over the rotor unless the rotor spacing change happens to match the thickness of the original mounting tabs.
I'll try to sketch this up to clarify and post back.
I'll try to sketch this up to clarify and post back.