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monley

az supporter
Joined: Wed Nov 24, 2010 7:58 am Posts: 11092 Location: Mandurah.W.A.
Vehicle: 84 LWB NT
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 Posted: Sun Oct 05, 2014 5:41 pm |
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Hey gang, I'm currently running lwb vitara breaks in the front of my sierra and pintara rear breaks. It pulls up great etc...but how much difference in break force is there between standard sierra breaks and the vitara breaks? Reason I ask is I'm having width issues. I have kpd bead locks and with the vitara breaks I have to run wheel spacers to clear the calipers and I don't think there is enough meat to grind the vit breaks down. If I go back to sierra breaks ill be able to chop 60mm  of my front width off which is huge( plus all the other advantages of been narrower). My front end width issues were apparent straight away when I went wheeling the other day to Has anyone got any ideas on how I could stick with vit breaks and take the spacers off? (Yes I know there are other alloy bead locks out there, but I can't justify the coin ATM for new rims). How much is my breaking performance going to suffer going back to standard breaks?
_________________ Tell my arse, he actually gives a crap!
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Jazzor

az supporter
Joined: Sat Jul 24, 2010 4:42 pm Posts: 502 Location: Kingston, Tas
Vehicle: 85 Suzuki Sierra
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 Posted: Sun Oct 05, 2014 10:51 pm |
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Interesting to hear if anyone has gone from rear disk brake > that + front vitara caliper on 33's too. It's on the bottom of my list of possible upgrades  . Just the rear disc brakes made a big difference to the pedal feel and stopping (+ the maintenance  ).
_________________ Orange LWB Sierra
Last edited by Jazzor on Mon Oct 06, 2014 8:47 am, edited 1 time in total.
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pyrohamish
Joined: Wed May 27, 2009 11:30 pm Posts: 331 Location: Fremantle, WA
Vehicle: '85 Sierra LWB Ute, Lkd 33's
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 Posted: Mon Oct 06, 2014 2:26 am |
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You should be able to run sierras or whatever you want anywhere without an issue but you should put in a proportioning valve and dial it in. How big are the pinatra callipers compared to the sierra ones?
My setup is sierra fronts on the rear, vit ones on the front, Nissan GQ master cylinder, sierra booster(thanks monley), handbrake on the transfer case. Pedal sits nice and high and has good feel, I did run without a booster for quite a while but pedal effort was very high.
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Zook_Fan

az supporter
Joined: Thu Mar 13, 2008 10:30 pm Posts: 4530 Location: Toowoomba
Vehicle: Maruti and LJ80's
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 Posted: Mon Oct 06, 2014 9:38 am |
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I had the same issue, I upgraded to Vit calipers on the front then because of the KPD wheels went back to Sierra stock calipers. With the rear pintara calipers and the sierra fronts I could still lock up all four on dirt and I never really felt under braked.
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monley

az supporter
Joined: Wed Nov 24, 2010 7:58 am Posts: 11092 Location: Mandurah.W.A.
Vehicle: 84 LWB NT
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 Posted: Mon Oct 06, 2014 10:04 am |
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Well that's good to know. How easily would it lock up? I'm guessing my lwb would have a fair bit more weight over your old shorty tho [URL=http://s1216.photobucket.com/user/jimnyzook/media/Mobile%20Uploads/DSC_0189_zpscjqujb6t.jpg.html][IMG]http://i1216.photobucket.com/albums/dd377/jimnyzook/Mobile%20Uploads/DSC_0189_zpscjqujb6t.jpg[/IMG][/URL] That's how much I would need to take off to clear the breaks....to much? I was going to to swap back to standard breaks as a test run but I found this morning I don't have any old discs lying around 
_________________ Tell my arse, he actually gives a crap!
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SierraDan

az supporter
Joined: Fri Feb 04, 2011 10:55 pm Posts: 9348 Location: Newcastle
Vehicle: G13BB Jimny
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 Posted: Mon Oct 06, 2014 10:08 am |
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Zook_Fan

az supporter
Joined: Thu Mar 13, 2008 10:30 pm Posts: 4530 Location: Toowoomba
Vehicle: Maruti and LJ80's
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 Posted: Mon Oct 06, 2014 10:12 am |
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Link fail..  I personally wouldn't want to take that much off a calliper for on road use. My GV had a fair trim but not that much. My shorty would have been surprisingly heavy with quite heavy front and rear bars, winch and the roll cage. Your ute would probably still weigh more though but probably not by a huge margin. It would take some effort to lock up, down hill wasn't an issue and slowing down from speed felt better than it did previously.
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monley

az supporter
Joined: Wed Nov 24, 2010 7:58 am Posts: 11092 Location: Mandurah.W.A.
Vehicle: 84 LWB NT
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 Posted: Mon Oct 06, 2014 7:35 pm |
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It is a fair bit to take off I agree. What do you think would be a cause of failure if I did take that much off? To much heat? It has been suggested to me running uber long wheel studs and 8mm spacers, but I'm not overally keen on that idea 
_________________ Tell my arse, he actually gives a crap!
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SierraDan

az supporter
Joined: Fri Feb 04, 2011 10:55 pm Posts: 9348 Location: Newcastle
Vehicle: G13BB Jimny
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 Posted: Mon Oct 06, 2014 8:11 pm |
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Too much load.
The piston is essentially fighting that side of the caliper. It may or may not just snap those fingers off under hard braking.
_________________ mlm
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Zook_Fan

az supporter
Joined: Thu Mar 13, 2008 10:30 pm Posts: 4530 Location: Toowoomba
Vehicle: Maruti and LJ80's
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 Posted: Tue Oct 07, 2014 6:51 am |
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Exactly what Dan said. They are made in a cast and the material does not bend, it cracks.
I ran long studs and had a cut down disc brake centre on the front as a spacer so it was about 8mm. The rear floater spaced the rear out about the same. This is also something I probably would not do for a road going car but hey with those beadlocks you're going to stand out anyway.
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monley

az supporter
Joined: Wed Nov 24, 2010 7:58 am Posts: 11092 Location: Mandurah.W.A.
Vehicle: 84 LWB NT
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 Posted: Tue Oct 07, 2014 9:34 am |
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Mhh..that could be a option. I think 30mm spacers would stand out a bit more than 8mm spacers
Anyone know if swb vit calipers can be used on lwb discs? As im lead to beleave the caliper is sierra size but I'm unsure if they will fit fit onto lwb discs
_________________ Tell my arse, he actually gives a crap!
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SierraDan

az supporter
Joined: Fri Feb 04, 2011 10:55 pm Posts: 9348 Location: Newcastle
Vehicle: G13BB Jimny
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 Posted: Tue Oct 07, 2014 9:49 am |
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Doubt it.
_________________ mlm
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Gwagensteve
Joined: Thu Feb 26, 2009 10:30 pm Posts: 13007 Location: Melbourne
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 Posted: Tue Oct 07, 2014 9:59 am |
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