Stock S13 and Z32 Brake Rotor Size?

[JoeD]

i did a search for this, and while i found a lot of info on the Z32 brake conversion, i did not come accross the specs of the Z32 brakes. what is the diameter of the Z32 brake rotors? are the TT rotors larger than the N/A units? also, what is the diameter of the stock S13 240SX brake rotors?

thanks in advanced.

[DuffMan]

The Z diameters are both 280mm. Don't know about ours.

[JoeD]

ok...just found out. according to Road & Track, the Z32 TT brakes are 11.0" front (~279.4mm), and 11.7" rear (~297.2mm):

http://www.mkiv.com/publications/road&track/2_94/rt294_08.jpg

also, why is it that Z32 brakes are commonly (relative to break upgrades) swapped, in place of say...Supra TT or RX-7 brakes? is there anything Nissan-specific which will only allow Z32 brakes to be installed on an S13/4? or is that people just want to stay loyal to Nissan? &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'>

[uuninja]

The reason that the z32 brakes are so popular is the fact that the calipers bolt up like OE on the 240sx. Making the swap simple, easy and cheap. I doubt that the same can be said for the supra or 3000gt breaks on to a 240.

[HippoSleek]

damb - who knew the C4 vette was so light? &nbsp;Pretty cool that the car w/ an engine w/ almost double the displacement has the best F/R weight ratio AND weighs more than 100 lbs. less than its competitors.

[uiuc240]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (HippoSleek @ Aug. 12 2002,10:24)</td></tr><tr><td id="QUOTE">damb - who knew the C4 vette was so light? Pretty cool that the car w/ an engine w/ almost double the displacement has the best F/R weight ratio AND weighs more than 100 lbs. less than its competitors.</td></tr></table><span id='postcolor'>
lighter than the other fatties, yes, but geez...3400 lbs??? &nbsp; <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'> &nbsp; it's no wonder a 240 with an SR and few mods can smoke a vette. &nbsp;700 lbs lighter!!! &nbsp;just imagine having vette levels of hp (300 in that example) but having 700 less lbs to carry around?! &nbsp;phenomenal.

Eric

[AKADriver]

Turbochargers and complicated DOHC cylinder heads weigh a lot more than people expect.

I think it's pretty funny that the 300ZX TT has smaller front brakes than my Volkswagen's 11.3" rotors.

[uiuc240]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ Aug. 12 2002,11:42)</td></tr><tr><td id="QUOTE">Turbochargers and complicated DOHC cylinder heads weigh a lot more than people expect.

I think it's pretty funny that the 300ZX TT has smaller front brakes than my Volkswagen's 11.3" rotors.</td></tr></table><span id='postcolor'>
true. &nbsp;however, how thick are your VW rotors? &nbsp;and how many pistons are those sliding calipers you have? &nbsp;and how big are the rear brakes (which might help cure the VW tripod-action)?

i agree that the Z brakes aren't that big in diameter, but they have other good qualities.

Eric

[AKADriver]

Two-piston. &nbsp;I think they're about as thick as 300ZX NA rotors. &nbsp;There's no doubt the 300ZX has more clamping force...

There's no cure for the VW salute, short of installing a Syncro AWD system and the independent rear suspension that goes with it... &nbsp;mine doesn't have enough tire to get up on three wheels anyway, it's just a daily driver on all-seasons.

[uiuc240]

crazy VW trailing arm action. &nbsp;hehehe. &nbsp;looks scary from outside the car, but you can't really tell when driving it. &nbsp;weird. &nbsp;i love VeeDubs. &nbsp;:-) &nbsp;had one for 2 years.

Eric

[Halz]

I see the 300ZX brakes as being the largest, sane, conversion for the 240SX.. anything else, and really its just a case of diminishing returns. Unsprung weight goes up, fabrication becomes an issue, wheel choices are further limited.. guh. Not worth it to put +12" rotors, or even larger calipers, on a ~2700lbs car.. unless, maybe, you're running 315 wide R compund tires

[HippoSleek]

OT: any FWD car will pull three wheel/pissing dog motion if you have a big rear bar and/or stiff springs. &nbsp;My old Civic used to all the time - it really wigged people out. &nbsp;At the National Grand Prix a few weeks ago, I was watching from just inside the fence on a hairpin and noticed every fwd car in the field lifting.

[JoeD]

thanks for all the info guys.

but one question still remains...how big are stock S13 brakes?

[240 2NR]

Yep, all the fast CRX's do it too, but I think the VeeDub's (rabbits and golfs) reach that limit much sooner and it's a substantial lift sometimes too. &nbsp;The crx is enough to see it's up, though still very mild by comparison.

http://www.mcsccpix.homestead.com/AX.html

Here's a 911 giving you two wheels up, and my instructors old supra, that I believe holds the track record in Xstock.