Just thought I'd post this since I typed it up a while ago when I was looking into a brake upgrade for my 180B; some parts like braided lines I have not personally done my self and are on the to do list but this will give an idea to those wanting to do the same in the future.

to me they're a bit understimated and pull up the 180B very well, if you're only still running an L series or even a boosted L series these should be fine.

Also please note I take no responsibility for any damage caused, and it would be best to get the work done by a specialist.

Parts: 180B Big Axle struts.

Small Stub Axle: 9/72 to 8/74

Big Stub Axle: 9/74 - 8/78

VL Turbo or VS/VR/VP V8 front alloy callipers which are all the same and some have the cooling fins must have the matching spacing.
Blank Mitsubishi Verada front slotted rotors DBA code – DBA425US.
Braided hoses, Bendix pads or EBC pads, Dot3 or higher brake fluid.

Notes: callipers bolt straight onto late model 180B struts which have the same 3” bolt hole spacing as the commodore struts, blank rotors are to be re-drilled 4x105 pcd with 10mm holes, and centre bore to be machined to suit hub then the rotor can be bolted onto the rear of the hub/s via the four bolts that hold the original rotor.

New seals and bearings may be a good idea since hub is to come off and cleaned, may also be a good idea to paint the callipers or have them powder coated and also have all rubber seals on the calipers replaced, also struts have to be swaped from left to right thus having the callipers facing to the front of the car and a 1.5mm washer needs to be used on the back of the mounting ears to centre the caliper on the rotor, I also just used the original Commodore brake lines and just connected up to the original solid lines and also is a good idea to torque all the bolts up specially for the caliper bracket and may even use loctitte.

pics of what they look like once installed.

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"You stay classy OzDat"

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Shean Connery ish Shexty shex and shtill shexy

1964 hillman minx under resto at the moment
BUT DATSUN COMING AFTER THAT
FORMERLY JDM120Y

Before the era of fully hektik Skylines, Silvias, WRX's and RX7's, the Magna / Commodore upgrade was the ducks nuts, and stopped many a turbo and / or rotary Datsun competition car more than adequately. Sure, there are better things on the market nowdays, but as you said, these are such an improvement over standard it's not funny.

You're right. They are very under estimated, and will do an adequate job on a lot of modified cars (probably suffice for 99% of street 1600's or 180B's). Of course they won't have the same cred as a set of 4 spot polished alloy calipers and 300mm rotors

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They have drifting in forests now?
What will they think of next?

When I was looking into it many ppl told me to go for the 4pot but the unsprung mass of the calipers put me off a little bit and not only that but I only had the budget at the time to to the VL-Verada combo.

They stop the car 100 times better than the stock brakes, one they wam up a little bit more they really do bite, only thing is the pads which I don't like because they tend to dust quite a bit and my poor Longchamps cop it a bit but all in all to make this setup work better than it does I would need better fluid, braided lines and maybe some better pads.

Cost wise it was something like:

Pads: $70
Rotos: $260
Fluid: $40
Bearings: $80
Washers: $2.50
Calipers: $52
Labour: 0 did it all my self since everything just bolted up!

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"You stay classy OzDat"

One thing i just noticed about your brake setup Alex is that these is large portion of the disc that isn't being used. Its not a huge drama because at least its only the smaller radius thats being missed, but perhaps that is one more reason why the 4 piston calipers are a wiser choice? Maybe the contact area on the 4 piston pads is larger and covers the whole section of disc? Not sure, either way - thats a mighty good bang for buck brake upgrade! I'm sure it would sh1t all over my solid disc 240k sumitomos!

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1975 Datsun 180b - EFI turbo L20b Sold

More radius better than more area. If you've seen photo's of some of the earlier Subaru WRC's they had a big diameter disc with quite a small rubbing area.

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Happiness is watching the race.... in your rearview mirror

yeah i know, but i am pretty sure when you go the 4 piston calipers you use the same verada discs, so you would then have the same radius, plus more pad area, plus 4 pistons... it probably works out to make f-all difference, it was just something i noticed..

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1975 Datsun 180b - EFI turbo L20b Sold

More pad area is a good thing for other reasons such as pad wear and heat dissipation. The 4 piston calipers work better becasue they push more evenly on the pad, giving a more even force distribution across the pad area.

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They have drifting in forests now?
What will they think of next?

If you want to use more of the disc you could try this little upgrade.

http://www.autospeed.com.au/cms/A_0835/article.html

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Mark

whats the dimensions of the center hole in the disk?

73mm from memory.

sorry for the late reply

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"You stay classy OzDat"

Will this combo fit early model stanza's (79')? Cheers Jay

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Previous Stanza 80 model: L20B balenced for 9500rpm, big cam, twin 45's 100kW ATW.
Current Stanza 79 model: 1 owner spec http://ozdat.com/forum/viewtopic.php?f=62&t=23236
In progress 82 model: track car rebuild with above motor http://ozdat.com/forum/viewtopic.php?f= ... 40&start=0

I guess it will just as long as the struts have the same 3" spacing between the bolt holes.

*edit*

Bolt hole spacing on struts:

1600: 3.0"
180B : 3.0"
Stanza to '79: 3.0"

Stanza '80 and up: 3.5"
200B: 3.5"
240K: 3.5"
C210: 3.5"

so the answer is yes!

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"You stay classy OzDat"

Just checked all the struts i have and there all 3.5" Damn it! So is there a similar cheap upgrade to suit these struts? Cheers Jay

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Previous Stanza 80 model: L20B balenced for 9500rpm, big cam, twin 45's 100kW ATW.
Current Stanza 79 model: 1 owner spec http://ozdat.com/forum/viewtopic.php?f=62&t=23236
In progress 82 model: track car rebuild with above motor http://ozdat.com/forum/viewtopic.php?f= ... 40&start=0

sure is! requires the same rotors but hilux 4 piston calipers, stamped S13, to suit vented rotors

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http://www.healingchambers.com.au