I bought my calipers from a 4WD repair and accessory place, who has maintenance contracts with many of the mines in the hunter Valley. They rebuild Hiluxes and Landcruisers all day every day. He told me the calipers were off a hilux, and he had a pair of brand new 20mm rotors to go with them. I didn't get the part number, but remember they were 6 stud, with a massive hole in the middle. That's the reason I didn't grab the rotors as well.

I can't say for sure what model the Calipers came from, but the following table (Shamelessly ripped from the DBA catalogue) shows all of the Hiluxes and Landcruisers that ran the 6 hole, 100mm centre hole 20mm thick vented rotor. If you can porove that none of the following ran an S12 caliper, then I'd happily concecde that the S12 can not be run with a 20mm rotor. Until then, I know what I saw and personally measured. I am not basing my opinion on what someone told me on the internet.

HI-LUX 4WD / 4 RUNNER / SURF / SW4
RN 105, LN 106, YN 106 8/88 - 7/97
LN, YN 61 4 Runner 8/85 - 3/89
RN 61 4 Runner 1988 - 91
LN, YN, VZN 130 4 Runner 8/89 - 91
LN 107, 111, 125, 135, 172 8/88 - 04
RN 106, 110, 125, 135 8/88 - 04
LN 165, 167, 170, 172 8/97 - 04
RZN 154, 168, 169, 173, 174 8/97 - 04
LN 192R 3.0Lt Diesel 4WD 8/88 - 04
KZN 165 8/97 - 04
VZN 167 8/88 - 04

LANDCRUISER, BUNDERA
BJ 40, HJ 45, FJ 40, 55 9/79 - 7/80
BJ 42 8/80 -10/84
BJ 60, 70, 73, 74 11/84 -1/90
HJ 47, 60, 61, 75 1980 - 99
HZJ 70, 73, 75 1980 - 99
PZJ 70, 73, 75 1980 - 99
FJ 40, FJ 60, FJ 70 Series 1980 - 92
FZJ 75 8/92 - on

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

I am not saying i am right here... just showing what my research has found... this service place you speak of probably buys parts from where i work... we are the biggest 4x4 wrecker in the country, having about 100 hiluxes, 50 landcruises, 100 patrols of different years, but not many late model surfs/4runner's (1998 on) so it's possible it is these which have what we want... i searched every lunch break for over a week trying to source some of these s13 calipers for someone on here and all i could find were either s12's with the right bolt spacing, but a 12mm rotor, or s13's with the wrong bolt spacing, bug rotor...

As i said in my previous post, if you have this setup could you please take a photo of it; for the benefit of everybody.

I am really interested to know which caliper it is that people use so then i can supply you all with mega cheap calipers... we do after all throw these out on a day to day basis

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I'd love to post my setup, but the struts, calipers and car were sold a couple of years ago. I never got around to fitting it all up, otherwise I could tell you what parts I used (I tend to record everything in far too much detail ). As mentioned before, I have no idea what model the calipers came from. I was actually asking him whether he had any RX7 4 piston calipers lying around (He'd rallied a FC RX7, and was buiulding a FD at the time). He told me he'd been holding onto the caipers for someone building a rally car, but the project never went ahead. They were sitting on his shelf taking up space, so he let me have them for a very good price.

It surprises me that from the number of cars you inspected, you found so few useful calipers. Are you sure that the vented S12 calipers still used a 12mm disc? The only vented disc I could find in the DBA catalogue that was less than 16mm was for a Mazda 929 rear. The thinnest vented rotor I can find on any commercial or 4WD Toyota is 18mm, and that's on the rear of Landcruisers, some Taragos, and the front of some lite aces.

The thinnest vented rotor I can find on the front of any Hilux or Cruiser (or variant) is 20mm.

As I said before, the S12-8 calipers in the ebay photo previously posted look to be the same ones I had.

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

Top is Landcruiser LN106(?) 4-spot Cast Iron caliper for vented rotors.
(Botton is STD 2-spot Sumitomo).



The finished conversion on the 260Z Strut (using the S13 Silvia rotor 'DBA 919'):

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Classic Auto Fabrications:
http://www.ozdat.com/forum/viewtopic.php?f=38&t=31659

http://www.lescollinsracing.com/

i think the reason that no one can find the vented s12 calipers on any hilux is because they didnt come on hiluxs, they came on 60 and 75 series landcruisers. they look the same as the early solid disc hilux calipers but they take a 20mm vented disc

then all the newer cars after than ran even thicker discs, think my mates mid 90s hilux ran something around a 25-30mm thick disc. and another mates 4runner runs something similar

I will measure up the discs on 60-70 series cruises tommorow and see what size disc they run... but as far as i remember they run too thinner disc.... and as far as hiluxes not having an s12 caliper with a vented rotor, i have seen plenty that do.

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just use the dba catalog tells you everything you need to know

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Dave W

The 1600

Recommended traders: Nissanman, pro240c, 2door510, Datsport, mkyle, Green510, Um_510, jdmdatsun510, Ludachris

Yeah i thought of that... but realised im on my mates PC, not mine... lol.

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I am using the 4 pots from a volvo 240DL with the verada disk/240k strut, they are cheap (calipers = $30) and fairly easy, but they are a twin circuit so u have to get around that (simple using bluebird splitters), I've not tested as yet, but it seems like it will all work.

Can you post pics of the setup?

Saw this Here: http://autospeed.com/cms/A_2349/article.html

Havent heard of using Legend rotors before... Does anyone know the thickness associated with them?

EDIT: thinnest Legend rotors are 21mm. So these wider spaced Toyota calipers have to exist somewhere?

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Simon,

1978 Stanza, undergoing track spec build.

Righto... it appears i have overlooked the s12+8 caliper... i measured the disc that these go over and they measure up at aprox 20mm... could be good to use with the mr30 skyline strut/disc... but these have a different offset (or height) disc rotor. I picked up a pair complete mr30 struts today, and i will get some s12+8's next week to see how they go. This conversion probly wouldn't suit a high powered car (sr20det) but would be good for mine which is only going to have an sr20de.

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Amen

As I have said on other threads, look at Peugeot, Magna and Legend for rotor options. I'm pretty sure that one of those options is what is used on Dato upgrads with the S12-8 caliper. IIRC, the Oz spec R31 GTS Skyline rotor was fairly close too. Note you might need to use a spacer under the caliper to correclty centre it.

i can't see why the conversion wouldn't suit an SR20DET Datsun, even on a race track (unless maybe it was pushing 400+ HP). We;re talking about 4 piston calipers (designed for a 2 tonne offroader) with vented 270-ish mm rotor. With decent pads, these should pull you up fine. Remember, the 1600 has bugger all weight, and the aerodynamics of a brick.

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

Yeah maybe... I was mainly saying it wasn't suited if i were to use the mr30 disc (20mm x 24?mm diameter)... compared to magna/falcon and commodore rotors they have a very small vented area... and i have been in my fair share of cars suffering from brake fade while hammering through the hills, doesn't matter so much there but on a race trak i imagine it would.... however, i cant say ive ever had anything but standard pads fitted so maybe that's what makes the difference.

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Yeh, 24?mm dia rotors might be on the small side. I'm pretty sure that whatever is commonly used (again, I have a feeling that one of the 3 options I listed is about 270mm dia) works much better, and would work well enough on a turbo conversion.

Having said that, the solid 260mm rotors on the front of my rally car (with old school volvo calipers) have never looked like fading, and that's with 180RWHP and cheap lucas pads (best pad for the money IMHO)

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

Seems like you've made some progress Riley! How much for a set of S12+8 calipers. Yes, still looking. Crunched the car into the wall at Phillip Island which means the rush to upgrade for the next event turned into a few months off the road! I'll looking to do the 270mm Verada discs and Hilux calipers.

As to whether good enough, my 240K front discs/240Z finned alloy drums work amazingly well with 200 rwhp even at Sandown. Pads made the biggest difference (RB74s) together with race fluid. They fade after maybe 6 or 7 laps but still work. Going to R31 rear and Verada/Hilux front with similar pads and fluid has to be a big improvement and I reckon will overcome any fade issues I've had in the past (nil fade at Phillip Island with current setup).

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Race car 13B 1600 - since SOLD!
'13 M135i, Quaife LSD, tuned (380 hp)
'15 X5 xDrive 30d tow car
'02 Porsche 996 GT2 (600hp/480rw hp)