Checking front Calipers upgrade - 1972 240z

240z, 260z, 280z
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Zeubin
Posts: 35
Location: Hamilton

Checking front Calipers upgrade - 1972 240z

Post by Zeubin » Sun Nov 29, 2015 1:53 pm

Hi all,

I am having a look into upgrading the front calipers on my Z with early Toyota Hilux parts as I have seen done on a few other forums.
I figure 4 pots are better than two.

Has anyone else done this? Is it worth it?

Also, are these the ones i want? I'm pretty sure they are, but if someone could confirm that'd be choice.

http://www.trademe.co.nz/motors/car-par ... 380606.htm

Finally, would this require a cert?

Thanks,

Reubin

merlin
Posts: 189
Location: Auckland

Post by merlin » Sun Nov 29, 2015 2:41 pm

I have done it. Those callipers on Trade Me are required for the thin 1/2 inch rotors. Mine are for the 21-22mmthick vented rotors. I used 92 Honda legend vented rotors. I had to skim some off the dia to fit and bore out the hub center hole but that was it. They were brand new brembo rotors from BNT but were not running true when I installed them so I had to surface grind them to get them right (Bad product or QC)
I also upgraded the master cylinder with a 1" Nissan patrol one as the excessive pedal travel was not to my likening with the stock 240z M/C
The conversion made a big difference and because everything was bolt on/ there were no mods. I don't think you need to cert but don't take me up on that

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Andy
Site Admin
Posts: 2020
Location: Auckland

Post by Andy » Mon Nov 30, 2015 9:10 am

Reubin, go for the thicker rotors. The Hilux conversion is worth the upgrade price and is ok for street and light track work. We used the conversion in our early days in Targa and ended up with overwhelmed and buckled rotors after long stages, this should not be an issue for ordinary road use. If you are planning to go serious racing miss out the Hilux conversion and go to a AP or similar caliper and serious rotors.

As far as certs go, I believe a different caliper means that a cert should be required. However I would imagine there would be a few Zeds out there without certs that have non standard calipers. Most WOF checkers will not pick up the modification.

You should ask a certifier to be certain.

The following is from the LVVTA Standards for Braking Systems

Section 4 Modification criteria
4.1 Modifications not requiring certification
4.1(1) A vehicle is not required to be certified to the Low Volume Vehicle
Code where the only modification to the vehicle is the fitting of
any one or more of the following items, provided that the safe
performance of the vehicle is not compromised:
(a) after-market brake disc pads or linings which are
catalogued for the specific make and model of vehicle to
which they are fitted; or
(b) after-market disc rotors provided that the rotors;
(i) are catalogued for the specific make and model of
vehicle to which they are fitted; and
LVVTA Low Volume Vehicle Standard 35-00(00) (Braking Systems) Page 17 of 17
© Low Volume Vehicle Technical Association (Inc.) 1 December 2000
(ii) attach without any modifications to any inter-related
components; and
(iii) have no effect on the positioning or operation of the
hub assembly or any related systems or parts.

User avatar
B101
Posts: 325
Location: Hamilton

Post by B101 » Mon Nov 30, 2015 5:46 pm

Andy wrote:Reubin, go for the thicker rotors. The Hilux conversion is worth the upgrade price and is ok for street and light track work. We used the conversion in our early days in Targa and ended up with overwhelmed and buckled rotors after long stages, this should not be an issue for ordinary road use. If you are planning to go serious racing miss out the Hilux conversion and go to a AP or similar caliper and serious rotors.

As far as certs go, I believe a different caliper means that a cert should be required. However I would imagine there would be a few Zeds out there without certs that have non standard calipers. Most WOF checkers will not pick up the modification.

You should ask a certifier to be certain.

The following is from the LVVTA Standards for Braking Systems

Section 4 Modification criteria
4.1 Modifications not requiring certification
4.1(1) A vehicle is not required to be certified to the Low Volume Vehicle
Code where the only modification to the vehicle is the fitting of
any one or more of the following items, provided that the safe
performance of the vehicle is not compromised:
(a) after-market brake disc pads or linings which are
catalogued for the specific make and model of vehicle to
which they are fitted; or
(b) after-market disc rotors provided that the rotors;
(i) are catalogued for the specific make and model of
vehicle to which they are fitted; and
LVVTA Low Volume Vehicle Standard 35-00(00) (Braking Systems) Page 17 of 17
© Low Volume Vehicle Technical Association (Inc.) 1 December 2000
(ii) attach without any modifications to any inter-related
components; and
(iii) have no effect on the positioning or operation of the
hub assembly or any related systems or parts.

Andy I actually still have the brake kit I purchased from you a few years back and have rebuilt the front hilux callipers at a shop.

I think that is exactly what he's looking for right?

mikec(nz)
Z Club Member
Posts: 189
Location: Tauranga, New Zealand

Post by mikec(nz) » Mon Nov 30, 2015 8:33 pm

The conversion on the 240K race car was Toyota Surf 4 pot calipers with Hawk DTC 60 pads, not sure if this is the same as the Hilux, but they seemed to be a bolt on conversion.

Rotors are 270mm x 21mm - seemed to work pretty well on the car, but I replaced with 32mm AP's.

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User avatar
Andy
Site Admin
Posts: 2020
Location: Auckland

Post by Andy » Mon Nov 30, 2015 9:13 pm

B101 wrote:
Andy I actually still have the brake kit I purchased from you a few years back and have rebuilt the front hilux callipers at a shop.

I think that is exactly what he's looking for right?
Almost, the calipers are correct the top hats and rotors are an upgrade and came from Znoelli out in South Auckland and performed better than any stock items I could find.

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