Brake cooling options for the Z (and my new 2 piece front rotors)

[5thZ]

Thank you!

 

[Who.Am.Eye.2716]

Best pic I could find from the top. It serves its purpose.

Thats what the service manual shows. Without the pic of course

 

[Thefunk]

@5thZ that pic doesn't represent a universal bleeding order. It depends upon the position of the master cylinder relative to the calipers. Always start from the caliper furthest from the master cylinder then work your way closer.

 

[FSUZ33]

You are correct. That pic does not, in fact, represent a universal bleeding order. But from what I understand it represents the order specified by Nissan for the RZ34.

I used info from another thread/post here to create that image. They posted a pic of the page from the Brake "BR" section of the repair manual.

I cannot find that specific manual or section online, but that pic does represent the same order specified in the Nissan repair manual for the Akebono system on the Z34 (image below), which from what I gather is identical, or almost identical to the system on the RZ34. From what I remember my '03 had a non-standard order, for the Brembos, which I assume was the same for models with different calipers, as I assume other than the innards of the master cylinder, the braking system was/is the same.

If the other member's info is wrong, then I'm wrong, and I'll gladly remove what I've posted.

 

[Thefunk]

@FSUZ33 Those instructions are specifically for the RZ34? I'm confused by the order specified. It appears that this order implies the MS is on the front-right of the car (where the battery is).

EDIT: Ok after reviewing this order again, it's doing a cross pattern of bleeding. There is truly only one correct order and it 100% of the time depends upon the mounted position of the MS. Always start furthest from the MS and work your way closer however that plays out.

 

[sdktheway]

not sure it helps much but most people dont realize our NISMOs have brake cooling air guide/ defelctors attached to the sway bars

I didn't know this actually! I even went back and looked at the technical slides you posted long ago and didn't see it mentioned but I believe I found what you're talking about on Z1: https://www.z1motorsports.com/front...front-suspension-brake-air-guide-p-50978.html

 

[sdktheway]

The order is indeed rear right->front left->rear left-> front right. I recently paid like 20 bucks to have access to the service manual and learned that.

From the section on bleeding the brakes

 

[MCN1SMO]

I didn't know this actually! I even went back and looked at the technical slides you posted long ago and didn't see it mentioned but I believe I found what you're talking about on Z1: https://www.z1motorsports.com/front...front-suspension-brake-air-guide-p-50978.html

Yup

 

[5thZ]

Ima follow the service manual

 

[Thefunk]

The order is indeed rear right->front left->rear left-> front right. I recently paid like 20 bucks to have access to the service manual and learned that.

From the section on bleeding the brakes

Are you sure this is the svc man for the RZ34? That order goes against physics lol. Why would they instruct a cross pattern of bleeding?

 

[FSUZ33]

We’re getting off topic here, and apologies for keeping it going, but…
I don’t disagree that the universal rule for a vehicle with the master cylinder at the left front has always been: RR, LR, RF, LF.

However, this changed with the introduction of brake actuator modules and ABS. I don’t know how often vehicles with actuators stray from that rule (bleed by longest to shortest brake line), and I don’t know the effect of using the rule on a vehicle that should be done in a different order. There were a lot of people who didn’t agree when I brought it up around 2005 with my 350.

My take is if it’s an older vehicle with brake likes coming out of the master cylinder and going straight to the calipers then follow the original rule. If it’s a vehicle with ABS then you’ll want to check the manufacturer‘s recommended order.

 

[sdktheway]

Are you sure this is the svc man for the RZ34? That order goes against physics lol. Why would they instruct a cross pattern of bleeding?

I'm sure, it's the only one I have access to. Apparently this is due to a split braking system? Some cars have it split front and back but I guess others have it split diagonally. for what it's worth I did it the incorrect order because I assumed rear left came immediately after rear right and haven't had any problems.

 

[alienpoker]

not sure it helps much but most people dont realize our NISMOs have brake cooling air guide/ defelctors attached to the sway bars

Did not know that. I knew it had vented rotors on all 4 corners. Haven’t been under my Nismo yet, only 350mi driven so far. Thank you.

 

[Thefunk]

We’re getting off topic here, and apologies for keeping it going, but…
I don’t disagree that the universal rule for a vehicle with the master cylinder at the left front has always been: RR, LR, RF, LF.

However, this changed with the introduction of brake actuator modules and ABS. I don’t know how often vehicles with actuators stray from that rule (bleed by longest to shortest brake line), and I don’t know the effect of using the rule on a vehicle that should be done in a different order. There were a lot of people who didn’t agree when I brought it up around 2005 with my 350.

My take is if it’s an older vehicle with brake likes coming out of the master cylinder and going straight to the calipers then follow the original rule. If it’s a vehicle with ABS then you’ll want to check the manufacturer‘s recommended order.

Well in my Z the ABS module is right next to the MS. There are two lines going directly from the MS to the ABS module, then from the ABS module there are four lines going out to the calipers.

 

[sdktheway]

Did not know that. I knew it had vented rotors on all 4 corners. Haven’t been under my Nismo yet, only 350mi driven so far. Thank you.

Enjoy it! I started with around 500 miles 329 days ago and have enjoyed damn near every one! Only exception is that time I went down an unpaved road that stretched on far longer than I expected . Side note: still haven't seen another new generation Z in the wild yet..