G4 Brakes

[PHaT MR30]

Tony Alford ran these on his GTR at Rally Tasmania a few weeks back. He had the 8 piston 356mm up front and some 6 piston (i assume 324mm) up rear. Didn't mention anything about brake issues, however he was having a dog of a time chasing some other issue which they believe was a ball joint issue causing something (unable to pick) to hit on the rotor.

See how they go in Targa in 2 months time.

[tacker]

Hey i just had mine off to check and seemed ok to me and i have the same kit! I was worried there for a minute.

Sad to say but i guess i dont drive as hard as the other guy :-)

[Sayajin]

What were you worried about?

It seems to me that everyone who is using this kit is ecstatic about it....

-Sayajin

[STATUS]

sweet brakes, i just dont like the tacky logos on them. Nothing a quick anodize cant fix:)

[tacker]

just finished a track day this morning and brakes again performed great.

4 x 20 minute session 30C no brake fade what so ever

[Duncan]

Just Jap are working on new hats and brackets for anyone affected by this, we had a slight rub on the rotor as well....I think there is only a mil or 2 in it - happens only on full suspension compression and full lock for me

[tacker]

sadly you guys must be driving harder than me :-(

[Duncan]

wel lots of people have used these on the track without problems so maybe its tony and us who are wierd. In any case 2-3mm extra will fix the problem, just contact Darron @ just jap if you've been affected.

[dontfeelcold]

What happens to the porsche GT3 calipers after one race meet?

Edited March 24, 2007 by dontfeelcold

[Beer Baron]

I don't know about 1 race meet, but we replaced them once or twice a year. basically they just get fatigued from all the heat cycles. eventually it's enough that the driver notices a reduction in the pedal feel. I guess if you had a lot of dough you could do them every meet. I know some of the guys we ran against in prod sports changed tyres after every session! we used 1 set for a whole meet.

[Sayajin]

So I am getting ready to buy this kit,

I just want to make sure that no one has experienced any problems as of yet? I know you guys ran them a few track days and loved how they perform. Is that still the case? Have no issues popped up?

If you guys still love them, I will be buying this kit in a few days.

Half the price of the Brembo and works just as well? Cant be beat!

-Sayajin

[T04GTR]

yeah the porche ones do get fatiged. the metal goes soft. and yuo get leaks and so on. and there cheap enough anyway. i think the going rate is 750 each for brand new ones from spare parts.

but.. the pads are uber expencive

[T04GTR]

honestly im all alcon now. the brembos are good but the discs arnt. and the floating design of them wares out prematurly

[Duncan]

we are running these on the car at Targa Tas this week - they have been thrashed and haven't faded at all.

we were running the street pads for the first day and chewed through them pretty quick (no fade but it ripped up the pads), but we've changed to the race pads and its fine now.

[tacker]

Duncun,

got a surprise last week had a delivery of new bells and mounting bracket to remove the issue of the rotor touching even though was not an issue for me.

I know what you mean about the street pads they performed great on the track but boy did i get through them in a hurry. Have the green track pads now and will run them next week in our first round of open saloon championship here in the middle east. Currently running some DS 3000 pads i got from a mate who is envolved with the BTCC so got a heap of run in pads to use but would like to try the green pads out and see how the perform.

And Sayajin,

Yesterday i had the porsche instructor and local radical cup champion take my old shitter out for a drive as he has been asking for some time. He chased down a GT3RS ( 996 ) not sure how good a driver the GT3 guy was but he did chase him down and and passed him. Dont get me wrong this guy is one of the better drivers i have seen, but he did pass comment on the brakes on said they are as good as his 997 GT3 RS ( not the carbon option ) but i think that the slick tyres may have helpped a lot and inflated their performance compared to his GT3RS.

Point is i know they are not as good as the GT3 brakes and he was just a little excited ( Boost you know what i mean ) when he spoke with me but they are a great package for the old skyline. And yes they are still new so lets see how they go after a season but even so if i have to get new calipers so be it the as still very cheap compared to other options.

[Sayajin]

Well I just emailed Just Jap an inquiry in order to purchase the Front 365MM kit... So lets see how these babies perform Stateside!

-Sayajin

[tacker]

I have some pics of the second set of pads i have gone through for every to have a look at the wear pattern but i can not post pics for some reason. Will get them up ASAP for every one to see.

Make sure you get the green track pads as well if your going to put the car on the track. The grey street pads work fine but you will get through them very quickly using them on thrack

Edited May 9, 2007 by tacker

[tacker]

Ok some pics of the second set of pads used by the G4 calipers.

Ran a new set of green track pads today and they were not good out of the box, but did get better and better as the day when on. seem to be better on the rotors than the ds 3000.

[T04GTR]

hrmmm. it seems they perform better than a cp5555 ap caliper in regard to taperd pad ware. not bad at all. do you have a pic of the brake rotor???

[tacker]

i do but i will get a closer pic of them for you so you can see the little heat cracks.