do it yourself front brake upgrade for the r30

[GTR30]

to be honest if i was doing this again, knowing what i know now, i would have looked for a set of aus spec GTS front struts, rotors and calipars with the rear shocks and springs as well, the shocks can be rebuilt, the ride height is 40mm lower without effecting the shock travel at all and the GTS rotors are about 280mm from memory (standard aus spec items are 256mm) and the pad face is about 25% bigger than the standard r31 items...

Over the HR30 standard items i'd say your looking at a 40-50% braking increase, alot better suspension package as well if you add larger sway bars.....

all up i'd say no more than $1200 including the rebuilding of the shocks and sway bars, good $$$ considering 4 years ago i bought DBA slotted rotors for the HR30 for $700, Orange Koni's front incerts for $800 and new bendix comp X pads for $150 and the front and rear whiteline swaybars for $300, money well spend NOT, they are sitting in the boot of the car now after only travelling about 100km with them in.......

Well i spent $1200 on my brake/suspension mods and apart from it being a bit too stiff driving over bumpy roads in the city it's great on a good road with nice corners..

brakes are standard with bendex ultra somethings- $40/50 - had to put new brake kits in every caliper (one at a time, it seemed every time the brakes were bled to put a new kit in, the seals on another caliper would perish- go figure)

Koni adjustables and custom made Kings Springs $1100 fitted....

Plus a few new bushes - radial arms, tie rods end etc...

handles sweet now, not like the boat on a po-go stick like before

Who has done a Z32 brake upgrade on an R30...

300zx 4spotter up front, and 2pot on the rear with the 5stud conversion???????

[rsx84]

I have been talking to discopotato about the whole thing and the guy does make some very good points (mainly bump travel I think) about why this is not an ideal set up. (as for as I know)

good thing about this issue now is most coilovers brand new can be adjusted at the base, height wise, without effecting the travel of the shock itself.

reading back now that write up is very hard to follow, i might re-write it so it make sense....

Edited May 11, 2007 by rsx84

[skybt1]

i just had my s13 hubs machined to fit the R30 tie rod ends. Took it to an engineer/machinist and he had the simple

idea of countersinking a hole where the nut goes for the TRE so that you can get the nut down enough to pass the

split pin through. Simple, easy and most importantly it works! Only had to countersink about 2.6mm.

Saves trying to die grind the whole bigger and making a mess of it.

Edited November 7, 2007 by skybt1

[rsx84]

Who has done a Z32 brake upgrade on an R30...

300zx 4spotter up front, and 2pot on the rear with the 5stud conversion???????

i looked into the Z31 set up for my r31 just 2 months ago, would be the same set up as using the r31 gear, the front brake set up is very different though, it will work but the rotor goes on then the hub over the top, don't know if you could go larger rotors or not with this set up, using the hr31 stuff you can fit the gtr calipars and rotors if you want to go that big

i didn't look at the rear for the 31 as it is completly different, if the hand brake set up between the r30 and z31 is the same then there would be no reason they won't fit...

[skybt1]

On the topic of 5 stud conversion. If you can find some Z31 stub axles maybe they can replace the R30 ones?

They look the same, whether they have the same dimensions is another story i guess..

[elrohir]

Being that this topic has been running for a while now. Can some one please post some pictures.

The conversation has left me a little confused?

Thanks Guys

[rsx84]

i'll re-write this tonight as there are a few options that i have tried and fitted now....

[elrohir]

Bump,

I was hoping to do this before work started again. I'm bored and this sounds like a good project.

[stagefumer11]

Bump,

I was hoping to do this before work started again. I'm bored and this sounds like a good project.

Such a simple upgrade. All bolts in. I kept the r30 control arms, replaced them with new units. When it comes to the steering linkage i took a taperd die bit and open it open a little bit. Works fine

[Doctor 30]

I just run cut lower control arms as per Gordon Dobie's advise and then R31 GTS struts with R30 tops. You have to grind the thread to fit them but it all works reasonably well. Other thing is to get the shortest possible inserts for the back or it sits up and looks stupid. The shocker guys in Heidelberg West were good and fitted the new inserts for free. I forget what there name is.

[rsx84]

I just run cut lower control arms as per Gordon Dobie's advise and then R31 GTS struts with R30 tops. You have to grind the thread to fit them but it all works reasonably well. Other thing is to get the shortest possible inserts for the back or it sits up and looks stupid. The shocker guys in Heidelberg West were good and fitted the new inserts for free. I forget what there name is.

so what you are saying is the r31 suspension is longer then the r30??

i've got a few days off early next week so i think i'll fit the GTS2 suspension into the HR30 and see what happens.

[skybt1]

I just run cut lower control arms as per Gordon Dobie's advise and then R31 GTS struts with R30 tops. You have to grind the thread to fit them but it all works reasonably well. Other thing is to get the shortest possible inserts for the back or it sits up and looks stupid. The shocker guys in Heidelberg West were good and fitted the new inserts for free. I forget what there name is.

So you are saying that you cut the control arms and reweld them together??

[dodgsun]

bump!!!

can we get a re-write and some clear pics???

[GTR30]

re write would be good

[full house]

wow! I learn something new . . .

[Factory 5]

Obviusly not englihs gramar