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Brake proportioning
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Author:  Highway-Star [ Sun Apr 07, 2013 6:03 pm ]
Post subject:  Brake proportioning

Hi All

OK, I want to put rear disks on my LJ80 before it goes back together. So in all the existing rear disc brake threads people will mention a brake proportioning valve to correct proportioning. But my question is, who can I buy one from in Australia? And if someone can suggest a local place in SEQ that would be even better.

Thanks.

Author:  3cyl [ Sun Apr 07, 2013 6:30 pm ]
Post subject:  Re: Brake proportioning

There's a race car bits shop in Belar St Yamanto.

Author:  Highway-Star [ Sun Apr 07, 2013 6:52 pm ]
Post subject:  Re: Brake proportioning

3cyl wrote:
There's a race car bits shop in Belar St Yamanto.


Cool, might have to do a drive-by one afternoon.

Author:  303zuke [ Sun Apr 07, 2013 8:22 pm ]
Post subject:  Re: Brake proportioning

I think you'll find that mention of requiring a rear proportioning valve is only needed when running Sierra calipers front AND rear. If you use Pintara or Galant calipers on the back, the piston bore is smaller and in virtually the correct ratio to the Sierra fronts that a proportioning valve is not necessary.

I have Pintara calipers on the rear of the Sierra and the fronts still lock up first, but it is possible to lock all 4 with a hard foot.

Author:  christover1 [ Sun Apr 07, 2013 8:34 pm ]
Post subject:  Re: Brake proportioning

Agree, my 1.0 LWB Sierra had rear Pintara discs, and no prop valve was needed.
Slightly different brake system on 1.3's though.

Author:  Highway-Star [ Mon Apr 08, 2013 6:16 am ]
Post subject:  Re: Brake proportioning

Yep I'd prefer the Sierra calipers all round. More parts commonality, and I have no need or want for a rear axle handbrake assembly.

Author:  christover1 [ Mon Apr 08, 2013 7:10 am ]
Post subject:  Re: Brake proportioning

I had a mate who turned down the rear Sierra discs, that solved his bias issues.

Some also us less efficient brake pads on the rear, with good ones up front.

Author:  tanshi [ Mon Apr 08, 2013 8:55 am ]
Post subject:  Re: Brake proportioning

aparently the mini guy over in leichardt coult help out too. as one of the morrisses had them

Author:  want33s [ Mon Apr 08, 2013 11:18 am ]
Post subject:  Re: Brake proportioning

Jegs or Summit.. You'll get your stuff within a week and pay half what you would locally.

Author:  mrw82 [ Mon Apr 08, 2013 1:45 pm ]
Post subject:  Re: Brake proportioning

Jegs is the brand I'm running in snotbox. Not sure where to buy them though, a mate gave it to me.

Author:  BlueSuzy [ Mon Apr 08, 2013 1:53 pm ]
Post subject:  Re: Brake proportioning

Jegs etc are all the same crap. I have one from lowrange for my rear brakes. Vented lux front, vented patrol disc rear with subaru caliper. 80 master

Author:  tanshi [ Mon Apr 08, 2013 1:57 pm ]
Post subject:  Re: Brake proportioning

problem is that lowrange have drop the ball on customer service in the last couple of months

Author:  BlueSuzy [ Mon Apr 08, 2013 2:22 pm ]
Post subject:  Re: Brake proportioning

plenty other sellers selling same thing

http://www.outlawspeed.com.au/shop/inde ... dcaf2907e2
Cheap one is probably
Image
Dearer is probably
Image

These things are very generic. few different types, 1000 different brands stuck on them

http://www.aliexpress.com/item/Brake-Bi ... 60960.html

Author:  Highway-Star [ Mon Apr 08, 2013 4:57 pm ]
Post subject:  Re: Brake proportioning

Cheers guys!

Allot of the available ones from my resultant searching of whats been suggested all have imperial inlets and outlets (3/16", and NPT fitting etc). Suzuki threads are M10x1.0, so are adaptor fittings typically used, or are people getting new hard line made to suit the different fittings?

Author:  tanshi [ Mon Apr 08, 2013 5:01 pm ]
Post subject:  Re: Brake proportioning

Just adapt them. Easy as

Author:  mrw82 [ Mon Apr 08, 2013 7:22 pm ]
Post subject:  Re: Brake proportioning

The one I got has npt threads but came with adaptors to tube flare fittings, imperial though. So all you need is a couple of imperial flare nuts and you can cut it into the stock line along the chassis.

Author:  Highway-Star [ Mon Apr 08, 2013 7:33 pm ]
Post subject:  Re: Brake proportioning

mrw82 wrote:
The one I got has npt threads but came with adaptors to tube flare fittings, imperial though. So all you need is a couple of imperial flare nuts and you can cut it into the stock line along the chassis.



Considering how much of a nightmare I am currently having trying to find useful adapters online I think this might have to be the way to go. At least the new flare nuts should be cheap as from the local brake shop.

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