Originally Posted by edconline (Post 2791115)

What was the price these were listed for then (can't see now that the link is down). If it is much more than the RB $950, I'll stick with the RB rears. My fronts have been amazing thus far. 1lb extra weight savings on the rear would be nice, but not worth a whole lot more IMO. I love the open slot design of the RB rotors too, and I don't mind trimming the dust shield slightly to gain a thicker rear rotor. (So much trimming/adjusting other stuff on the car anyways, what's one more dremel lol)

Originally Posted by edconline (Post 2791146)

For the pair?!@ You must mean each.. lol. If it's for a pair that's insane, I'm all over it. If each though, I don't see the price increase over the RB ones. Not having to shave a bit off the dust shield is nice (I can see some people not wanting to bother) but not really a big deal to do it either. Especially if (as they state on the site) the thicker rotor will increase longevity.

Originally Posted by PharmDZ (Post 2791310)

Dumb question... Correct me if I'm wrong but the rears are gonna sell for $650?? Aren't they smaller than the fronts? Dunno why they'd be more expensive.

Originally Posted by PharmDZ (Post 2791310)

Dumb question... Correct me if I'm wrong but the rears are gonna sell for $650?? Aren't they smaller than the fronts? Dunno why they'd be more expensive.

Originally Posted by edconline (Post 2791380)

The rear rotors were more expensive when RB debuted them too, I'd imagine they cost more to produce and develop seeing as they have to retain the ebrake.


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Originally Posted by edconline (Post 2791389)

Oh boy, please tell me these are available without the cross drilling!


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Originally Posted by slam1918 (Post 2791385)

Z1 2 piece rotor set front & rear installed with new pads,SS lines & Moto fluid

There seemed to be some question as to the weight of the rear rotors. My bathroom scale shows a 5 lb reduction from factory to Z1.

Tip on the install. you will probably have to back off the star wheels adjuster on the emergency brake. Check the tension on the brake assembly before re mounting the tires. On the rear I used the old caliper pins as the ones Z1 sent in the kit were too long and looked silly stickin out of the caliper.

She will be getting a wheel alignment tomorrow & then brake break in.

Originally Posted by 6MT-Z34 (Post 2791412)

Nice! I think the rotors are directional I'm not 100% sure but u might want to check it before doing the alignment and brake in...?

Originally Posted by slam1918 (Post 2791419)

what's the beef with X drill??? I have an 04 Joe Gibbs Silverado with 175k miles Magnuson blower & Baer slotted X drilled rotors all around. I drove the crap out of it in the S. Florida heat & not a peep out of em. Changed pads @ 75k & didn't have to resurface the rotors.

Originally Posted by DEpointfive0 (Post 2791416)

They are.

And slam1918 installed them wrong if I'm not mistaken

Originally Posted by slam1918 (Post 2791603)

Funny Z1 tech told me on the phone cooling vanes in between the rotor surfaces go toward the front to scoop air and assist in cooling but I will triple check with them. Maybe if Z1 is peeking in on this site they can chime in. The pic is front & rear but thanks for pointing that out. I'll confirm today.

Originally Posted by Sh0velMan (Post 2791719)

A key point that may be being missed in those articles vs this discussion: It's internal vane orientation that matters, not the slots on the outside. So you gotta be sure the internal vanes are pointed the right direction.

Originally Posted by Sh0velMan (Post 2791719)

A key point that may be being missed in those articles vs this discussion: It's internal vane orientation that matters, not the slots on the outside. So you gotta be sure the internal vanes are pointed the right direction.

Originally Posted by FPenvy (Post 2791715)

i mean i could always just go look at my stock rotors and tell you which way they go lol

Originally Posted by edconline (Post 2791926)

Those articles were reference internal vane orientation... The forum link was to the racing brake forum where they said exactly that, the slot on the outside doesn't matter but ALL CURVED INTERNAL VANES must run with the vane angled towards the rear for proper operation. I have a feeling they know a thing or two about brakes.
Right now his rotors are opposite to that. It just makes good sense when you think about it too, sucks air from the center of the rotor, through the hot rotor and out the edge away from it. If it 'was sucking air in' as apparently the Z1 tech suggested, it comes across the hot rotor to the inside and goes... Where?

Edit:
From the first link I posted:
"Rotors with curved vanes, however, are directional and must be positioned properly to achieve full heat dissipation. With curved vanes, the rotor must be mounted with the vanes angled rearward, which results in a centrifugal pumping action. This causes hot air to be pumped from the center area outward. "

From the second link:
"Rotors with straight or pillar vanes are non directional. Direction of cross drilled or slotted rotors can be installed on either side as long as the front and rear match.

A curved vane rotor is directional and must be installed as left and right. The vanes sweep backward from the inside running back toward the rear of the car."

Third link:
"Some higher performance cars come with "directional rotors", which have curved or tilted internal cooling vanes. These curved vanes pump more air through the rotors, resulting in improved cooling efficiency. Thus, there is a left and a right rotor. When the directional rotors are properly installed, these internal vanes should lean toward the back of the car - as shown in the diagram on the lower left."

Waiting for Z1 to chime in and explain why their curved vane rotors are apparently supposed to spin opposite to every other curved vane rotor on the market.

http://www.the370z.com/members/edcon...rientation.jpg



That probably wouldn't help as IIRC the stock rotors are straight vane design.

Originally Posted by Sh0velMan (Post 2791972)

Yes, I'm glad that you agree with me.

Originally Posted by edconline (Post 2791974)

LOL. I just re-read your post and was like :werd: The 'May be being missed' was too much for me when I read it this morning, just came off an all night shift at the base and clearly wasn't reading right lol. All I thought was, dammit how are people not getting this yet lol. :tiphat:

Originally Posted by DarkJak (Post 2789159)

Is the parking brake still working well with these?

Regardless, I'll eventually buy them this year to match the fronts.

Originally Posted by PharmDZ (Post 2791310)

Dumb question... Correct me if I'm wrong but the rears are gonna sell for $650?? Aren't they smaller than the fronts? Dunno why they'd be more expensive.

Originally Posted by Dustin@Z1 (Post 2792003)

The rears are going to be slightly more expensive than the Rear's due to the additional cost in the aluminum hat. The hat is machined from a massive chunk of billet aluminum, that is expensive from a material standpoint. The iron section are also not a standard dimension, this also significantly increased the manufacturing cost having to have the irons custom made.

Just to confirm. These will be listed for $728 regular price. But we will list these on special for an initial offering at $648 plus shipping. Again, to also confirm, this is for the PAIR of rear rotors. We have a limited number of sets available at this time.

Originally Posted by edconline (Post 2792058)

Amazing price Dustin :tup:
But even more importantly, which way do they spin?! :stirthepot:

Originally Posted by Dustin@Z1 (Post 2792089)

The internal vane direction dictates the direction of rotation...which is what I think someone mentioned previously.

If you plan on installing brake ducts that are mounted close to the hub, you want the vanes to slant towards the rear of the car. Inside (hub edge) leading. This will allow the vane to "scoop" the air and spin it out through the middle of the disc. \\\\

If you do not plan on installing any brake ducting, then it really does not matter. However, a 19" or larger wheel will have additional clearance between the wheel's barrel and the rotor itself. These will allow air to be scooped and pulled into cool the hub/wheel bearing....in theory. ////

The vanes are designed to scoop air and force it through the rotor. The rotor will perform this action, regardless of which direction you choose. However, if you do install brake ducts in conjunction with the rotors and install the rotors in the wrong orientation, the ducting will be work to its full potential.

I hope I have answered your question.

Originally Posted by edconline (Post 2792058)

Amazing price Dustin :tup:
But even more importantly, which way do they spin?! :stirthepot:

Originally Posted by DEpointfive0 (Post 2792118)

Yeah, that's a great price!

I forced my credit card info on John without knowing the price, lol
I'm very excited to get them. I might "be sick" when they come in...

Originally Posted by Sh0velMan (Post 2792133)

"Have a crisis"

Originally Posted by BlkNismo (Post 2792151)

Z1, will these be available with j hook design?

If so, I'm ready for front and rear sets.