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LH brakes

Started by _MiddaSamid_ , Jul 13 2018 09:32 AM

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12 replies to this topic

#1 _MiddaSamid_

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Posted 13 July 2018 - 09:32 AM

Hi again.. I'm starting lots of new threads.. sorry..

My car needs brakes.. Hoppers stoppers is an option.. I've spoken with them. They give all the right answers and plenty of people vouch for them here.. I've driven a car with them and well... it stopped.. There is nothing particularly special about the set up except that the research is done and it's a complete bolt on kit..

I've seen HQ discs with Nissan 4 pot calipers.. I like this set up.. Not an engineered set up and the spacing of the caliper off the stub leaves a DIY job.. Not ideal for brakes.. but it's cheapest. slotted discs are about $300 with bearings.. calipers are about $300 with service kit.. lines are about $90.. DIY spacers maybe $50 max. cost effective 4 pot upgrade..

Ultra Performance Components in Boronia are advertising a PBR setup for Torana using 287mm discs.. Cheaper than hoppers and similar equipment. Anyone bought and installed these? brand new and ready to roll. All inclusive.

They also have a HQ PBR setup using 298mm rotors for those with HQ-WB stubs.. and for those with 14in rims and HQ stubs, they do a 287mm disc option and machined caliper.. It's an extra $200 tho.. Still substantially cheaper than Hoppers..

What are peoples experience with clearance issues when upgrading to HQ discs on an LH/LX Torana? If..

using Torana stubs and HQ discs and calipers?

using HQ stubs and discs and calipers.?

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#2 Dr Terry

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Posted 13 July 2018 - 09:54 AM

I would use the Hoppers kit. You get what you pay for.

Some brake conversions I've seen out there would make you shudder. Is that a pun ??

Dr Terry

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#3 _MiddaSamid_

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Posted 13 July 2018 - 11:10 PM

nice pun if it isn't..

You don't always get what you pay for.. both hoppers and UPC kits use PBR calipers and slotted rotors with bearing carriers.. They use the same part number brake pads. The difference is $500 which isn't to be sneezed at.. Is hoppers stoppers kind of like silver top taxi when Uber turned up.. they forgot to watch the market and a competitor found a way to do it cheaper...

I'm not ready to buy brakes but I'll be talking with UPC when the time comes.. At that price for all new gear.. If it fits it'll do.. if it fits.. if.

Still need some insight into the clashes though.. caliper onto upper arm? Does larger diameter disc make the clash worse or better? There will ideally be a point at which a larger disc will move the caliper away from a clash with the upper arm purely based on the arc of the steer.. to make a ridiculous point.. if the brake disc was 15inches in diameter, the caliper definitely wouldn't foul the upper arm.. UPC offer a 330mm kit for the HQ stubs.. not that I want 330mm brakes, but you'd have to think that the caliper would clear the upper arm..

what other upgrades do people do..

torana stubs, hq discs, which caliper and what are the clashes?

HQ-WB stubs, HQ discs, which caliper and what are the clashes?

A9X/Harrop steering arms.. are they only necessary on the HQ-WB stub conversion?

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#4 rexy

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Posted 13 July 2018 - 11:30 PM

There are quite a few topics in the pinned area of the brake section.

Try to keep the Torana stubs. I found the handling much better than with the HQ stubs.

The UPC 287mm kit is the same as the Hoppers kit but much cheaper. Not many people have got their larger kits to fit easily.

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#5 neglectedtorana

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Posted 14 July 2018 - 07:41 AM

I fitted a UPC kit and the fit and clearance was ok but
I didn't use it as I was stubbornly trying to use a particular wheel that doesn't fit many discs. Took minor grinding to make it fit but pretty easy.

I should have changed wheels and used the UPC kit but went for something else.

Have a read about the UPC stuff in this;

http://www.gmh-toran...it-to-lx-hatch/

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#6 dattoman

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Posted 14 July 2018 - 12:11 PM

Hoppers kit used to come with an engineering report and fit instructions

UPC comes with neither of these

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#7 Lima31

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Posted 14 July 2018 - 04:37 PM

Hoppers kit used to come with an engineering report and fit instructions

UPC comes with neither of these

... or customer service, warranty support or just common respect for others - as revealed by a google search of their business

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#8 _MiddaSamid_

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Posted 15 July 2018 - 01:08 AM

thanks for the link.. interesting discussion on the "handling" of the torana stubs vs the hq stubs... are there any specifics on the "handling"? is it steering weight or turn in or understeer that's the problem?? I would expect the hq stubs to add steering weight but improve turn in and high speed cornering..

has anyone done any study on roll centres on the LH/LX suspension with standard stub or HQ stub? and with extended upper ball joint vs standard ball joint? I understand the extended ball joint was used on the larger disc to aid steering arc clearance but it ill also effect the dynamics of the handling..

A typical and cost effective mod of early Alfa's was to extend the upper ball joint and shift the roll centre to aid in cornering grip.. it was called a "roll centre kit" funnily enough and it had 2 balljoints in it.. It effectively changed the relationship of the top arm to the bottom arm. It improved front corner grip quite remarkably.

On a side note, I was reading the Harrop site regarding the A9X steering arms.. Apparently they improve understeer??? can this be explained? I can imagine a longer steering arm adds leverage and therefore control(but also slow the steering rate), but since both arms are the same length, I'm unclear how it can make a difference to understeer..

dunno. it's late.. maybe I should go to bed..

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#9 derrin71

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Posted 15 July 2018 - 02:55 AM

I got an engineers report out of UPC for my 287mm kit. Just e-mailed them and they replied within 24 hours with what i needed.

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#10 dattoman

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Posted 15 July 2018 - 12:45 PM

I got an engineers report out of UPC for my 287mm kit. Just e-mailed them and they replied within 24 hours with what i needed.

I'd like to see a copy of that

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#11 _MiddaSamid_

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Posted 15 July 2018 - 07:00 PM

do the Torana calipers and the HQ-HZ calipers have the same bolt spacing?

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#12 dattoman

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Posted 15 July 2018 - 09:21 PM

Yes they all have the same pattern

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#13 myss427

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Posted 16 July 2018 - 12:23 PM

On a side note, I was reading the Harrop site regarding the A9X steering arms.. Apparently they improve understeer??? can this be explained? I can imagine a longer steering arm adds leverage and therefore control(but also slow the steering rate), but since both arms are the same length, I'm unclear how it can make a difference to understeer..

The arm is not longer, but lower to align with the different center line of the HQ stub axle.