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GQ brake upgrade using GU parts
Posted: Wed Oct 10, 2007 8:57 pm
by 1TUFFGQ
Overheard someone at a club meeting last night mention fitting GU twin spot brake callipers and rotors to the front end of a GQ. My question is, how easy would this be to do?
Posted: Wed Oct 10, 2007 9:02 pm
by JWB
later model GQ's have twin piston calipers also!
I believe it a common brake upgrade! Not sure if there is any difference
with the discs?
They might install slotted rotors and the twin pot units?
Should just bolt up easy as!
cheers
Posted: Wed Oct 10, 2007 9:13 pm
by 1TUFFGQ
I would assume then that the twin spots carried over from the late model GQs in to the GU which would mean it will be easy.
Posted: Thu Oct 11, 2007 5:34 pm
by hottiemonster
you will need different discs / rotors, as the early GQ ones are narrower than the late model GQ and GU.
Posted: Fri Oct 12, 2007 1:30 pm
by Ruffy
GU rotors and calipers are larger than late GQ.
You will need 16 inch rims to fit GU brakes.
Posted: Fri Oct 12, 2007 2:33 pm
by turps
Ruffy wrote:GU rotors and calipers are larger than late GQ.
You will need 16 inch rims to fit GU brakes.
Isnt there a large number of GQ's running GU fronts with only 15"rims?
I thought all GU's came with twin piston front brakes.
Posted: Fri Oct 12, 2007 4:53 pm
by ludacris
Gu front calipers will not fit onto GQ hub assembly as they are a much larger unit bolt hole to bolt hole... This is from taking measurments from a 3lt 2002 model and 1989 GQ. If you would like to give it a go I have 2 front near new 2002 calipers for sale.
LudaCris
Posted: Fri Oct 12, 2007 4:57 pm
by 1TUFFGQ
OK, so what is actually required. Obviously GU rotors and callipers but any actual modification/fabrication/ drilling or cutting. Is it 100% that 15 inch rims won't fit over the calliper.
Posted: Fri Oct 12, 2007 5:00 pm
by gut42
I thought that only efi petol patrols GQ&GU had the twin spot larger calipers as my turbo deisel gu can run 15inch wheels no probs!
I may wrong.
Posted: Fri Oct 12, 2007 5:18 pm
by ludacris
1TUFFGQ wrote:OK, so what is actually required. Obviously GU rotors and callipers but any actual modification/fabrication/ drilling or cutting. Is it 100% that 15 inch rims won't fit over the calliper.
The calipers bolt onto the hub.
The GQ single pot caliper bolt patern is between 13 - 14 cm apart and the GU is 19 cm's apart.
Yes definatly have twin pots that came of a 2002 model 3lt GU.
LudaCris
Posted: Fri Oct 12, 2007 6:28 pm
by ozy1
im pretty sure the RD28's have twin piston front brakes andf you can run 15" rims with them no dramas, im pretty sure its the petrols that are larger again,
Posted: Fri Oct 12, 2007 7:37 pm
by MyGQ
ozy1 wrote:im pretty sure the RD28's have twin piston front brakes andf you can run 15" rims with them no dramas, im pretty sure its the petrols that are larger again,
are u talking about RD28 GU or GQ. cause the RD28 GQ were single, i know i been working on one the last month doing V8 and we looked at the brakes, they are single
Posted: Fri Oct 12, 2007 8:07 pm
by hammey
ozy1 wrote:im pretty sure the RD28's have twin piston front brakes andf you can run 15" rims with them no dramas, im pretty sure its the petrols that are larger again,
yep... you got it. GU.
Im running that setup right now with 15x8''rims in a GQ.
Ruffy is also right in that you wont fit 15'' rims over the big GU petrol calipers without massaging them with a 40grit flap disc
cheers smitty
Posted: Sat Oct 13, 2007 6:50 pm
by ozy1
i was talkin GU RD28, stock twin pistons with 15x8's, sould have made my post clearer, my bad
Posted: Sat Oct 13, 2007 7:35 pm
by ludacris
I have GU 4.5 and run 15's without any mods. But if you are wanting to run alloys you will have to grind.
LudaCris
Posted: Mon Oct 15, 2007 8:26 am
by Sandy Rut
Am running garden variety 15inch sunny's on GUIII twin pots and there is plenty of room!