I'd be interested to know where you got this information from. The Y62 has 4 piston callipers on the front - but even if you could get hold of a set (and afford them) - I doubt they would bolt straight on.Originally Posted by threedogs
I'd be interested to know where you got this information from. The Y62 has 4 piston callipers on the front - but even if you could get hold of a set (and afford them) - I doubt they would bolt straight on.
AFAIK it's the 4.8 in the Y61 that have the bigger brakes than it's brothers.
Different Caliper and thicker Rotors.
Thats why they have issues with some 16 inch rims not fitting as they don't have enough clearance to the caliper.
Dolphins are so smart that within a few weeks of captivity, they can train people to stand on the very edge of the pool and throw them fish.
MudRunnerTD (19th January 2015)
Learned something new today... didn't even know this sort of mod existed.
Between Patrols ATM. Had a beaut GU with 6.5 Chev TD. Next is a GU ute with a 4.5 litre Cummins conversion and a camper on the back.
Found lots of references that state the 4.8 callipers are "different" - but I can't find anything that tells me how many pistons they hold. I have been trying to improve my brakes for some time and 4 piston callipers would help lots - but I only want them if they bolt straight on. I don't want any adaptors or any other potential problems.
They are only 2 piston calipers. The brake pads are different but can be fitted to any other gu caliper. The rotors are different, so mountings are a little different and sourcing diff housings/assemblies would be easier than modifying your current. Im not sure that there is enough difference for an adaptor to be used.
If you have a look at the brake circuit the lsv is also a culprit in its operation to the patrol brakes effectiveness.
MudRunnerTD (19th January 2015)
I have driven a patrol with a hydro booster setup on it from PID (Heath). It would lock 35's without a drama, pedal was a little heavier but feel was still quite good.
I binned my LSV ages ago and fitted a manual bias valve in the cabin. Bloody lovely and jolly good fun too
Y60 Patrol 4.2 d SWB in puke green
2" body lift, 2" pedders suspension lift, 35" Simex muds on excel 16" alloys, needs a turbo :/
The GU 4.8 calipers are not a straight bolt in fit on a GQ. In fact AFAIK none of the GU calipers are.
The only straight bolt on caliper upgrade i know of is fitting the twin pot qg EFI calipers.
Even just rebuilding your existing calipers and braided lines may give you a boost in brake performance as everything works 100% again. Personally i would makemsure the existing brakes are 100% with maybe new rotors and pads, then look at the hydro boost..just a thought
I'm guessing we are talking about upgrading a gq here, seeing as its in the GQ section
Last edited by doka404; 19th January 2015 at 07:21 AM.
I'm upgrading all round really. Yes it's a GQ but I've got GU axles/diffs and brakes. Next stage is the hydro booster bit. I've replaced all the fixed brake pipes .I'll be fitting extended braided hoses everywhere else
I was just hoping to have found someone who'd fitted the same is all
I'll report back eventually.
Y60 Patrol 4.2 d SWB in puke green
2" body lift, 2" pedders suspension lift, 35" Simex muds on excel 16" alloys, needs a turbo :/
I think you are right. The small amount of difference would not be worth the trouble. I already have upgraded rotors and pads plus braided lines and I'm running dot 4 fluid. Funny you should mention it but I have ordered a new LPV and am replacing it tomorrow. Mine is shot and instead of the chassis to diff distance moving the lever to adjust the valve - when I apply the brakes the lever moves heaps and makes a groaning sound. The opposite of what is supposed to happen. I will pull it to bits to have a look when I replace it - but either the return spring is broken or the piston is siezed.
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