Replacing Rotors on R33

[shif_tea]

Hi yall,

Went to get my front pads replaced and discs machined cause i knew they were at deaths door. However the mechanic (it was a Midas) had a look and rang me to tell me the rotors were too ratsh1t to machine. Now i can't really see anything too wrong with them, and another workshop had a look about 10,000 kms ago and said they could be machined. They were trying to push their new rotors on me but i told em not to worry about it, just put the pads in.

Anyway supposing the rotors have had it, i've found some front slotted project Mu rotors on nengun for cheaper than they wanted to supply the stock ones at this place.

My question is, do i have to upgrade the rears at the same time or would it be fine just to do the fronts at the moment and follow with the rears in a while?? Not sure how this would affect braking etc etc.

Its going into unigroup tommozz for 100k service so i'll get them to check the rotors then and see what they say.

Any help would be much appreciated

Cheers

[Eug]

i would say its a good idea to replace all four... while your are it.

but braking is more front bias, so you MIGHT be able to get away with it

hop onto DBA and check the pdf they have for NISSAN, find out the standard width it should be for your 33 and see how much you have left for both front and rear rotors.

This should give you some indication of how much meat is left on the babies.

Eug

[maccattack]

Generally not.

Front will cop heaps more abuse than the rears ever will.

Have them checked out, but if this is the first change for the fronts, I would doubt the rears will need replacing at this stage.

[Driver]

its ok to replace the fronts.

[shif_tea]

cheers guys,

i would do both but at the mo its in for 100k service and the steering is playing up (whining like a beatch) so i wanna keep costs low for the moment

[Sydneykid]

the rotors were too ratsh1t to machine. Now i can't really see anything too wrong with them, and another workshop had a look about 10,000 kms ago and said they could be machined. They were trying to push their new rotors on me but i told em not to worry about it, just put the pads in.

Brake rotors have a minimum thickness, they can be pefectly smooth and still be too thin. Looking at them tells you nothing, you have to measure the thickness. The minimum thickness is stamped into the outside (circumference) of the rotor.

If the front rotors are too thin then they need to be replaced and new pads used or the current pads machined. If the rear rotors are OK for thickness, then they can be machined and new pads used or the current pads machined.

If you want to save money, leave the rear alone if the pads are OK.

[shif_tea]

Thanks man,

Yeah i know about the thickness, i was just suss cause these guys were really trying to sell me everything. Wanted to replace rear pads as well when i know they have 80% meat left on em.

Was just worried that by putting aftermarket rotors on the front and leaving stockers on rear it'd stuff things up.

Anyone know if the Mu secret ones are ok?? They're only for street use and rarely cop a flogging. They are the SCR 8 slits ones. Or does anyone else have any recommendations??

Cheers again for all the input :matrix:

[morlock]

i think i got 2 dba slotted rotors for 280 each about a year ago.

[shif_tea]

YEah i might give dba a go, thats about the same price as the MU secret ones

[MerlinTheHapyPig]

yes, you won't always see a "lip" develop on the rotors, so only way to tell is to measure the thickness. If it's under the min thickness you will need to replace.

once you get the front pads & rotors replaced, there is an amazing difference! you will love your brakes compared to what they would have previously felt like.

when my car came from japan, rwc check said to replace fronts and rear rotors.

I replaced the fronts first, *huge* difference in braking power. Then about 4 days later I did the rears (i had to wait for them to be ordered from factory). Not as much difference, you'll be sweet just replacing fronts as they are the most important.

I used RDA rotors, which are cheaper than DBA, and probably just as good. should have gone slotted, but at the time I didn't think about it, I just wanted to get the car rego'd asap.

My front & rear rotors cost $100 x 4 (I called up RDA directly, then went to brakes plus and asked them to match the price i was quoted).

pads cost $100 per set x 2

I installed them myself (they're easy to do, i think there is a tutorial in the tech section) so probably saved $100-200 or so there.

[shif_tea]

Thanks man, might give that a go. The cars in at unigroup at the moment getting a major service so i'll ask them to have a quick look. I'm a bit suspect when people start to try and sell me too much, i've been ripped off enough now.

I think i might do the install myself too, just been so busyt recently haven't had a chance to do anything.

Cheers

[GTRgeoff]

I'm with Merlin. I use the RDA and they work fine with me caning them at the track. Just warm up and cool down properly and they will be fine.

Get the slotted ones on front if you can, and it should only be around $560 for a full set with plain rears if needed.

[RS500]

Thanks man, might give that a go. The cars in at unigroup at the moment getting a major service so i'll ask them to have a quick look. I'm a bit suspect when people start to try and sell me too much, i've been ripped off enough now.

I think i might do the install myself too, just been so busyt recently haven't had a chance to do anything.

Cheers

<{POST_SNAPBACK}>

dude,

have you been priced on the dba rotors for your skyline yet?

fyi, i have access to good prices for the DBA 4000 & 5000 series rotors.

If interested PM me.

[siksII]

does anyone know the minimum thickness for a standard r33 gtst rotor?

or generally how many mm till u should replace them from new?

i ask because i measured mine a while back but did not know exactly what the min thickness should be.

[MerlinTheHapyPig]

http://www.dba.com.au/dba_catalogue_2004/H...ndard_index.htm

[siksII]

http://www.dba.com.au/dba_catalogue_2004/H...ndard_index.htm

<{POST_SNAPBACK}>

thanks for that. i had already seen that but i missed the minimum diameter column silly me. well i measured mine a couple of months ago at 29mm, original is 30 and minimum is 28 so i guess they should be ok for another set of pads when the time comes.