In-Car at Willow Springs + Off-track dirt action...Thanks Ice Mode...

bigpat728

what size wheels and tires are you using on your z? i'm new to the z world and wanna start doing some track days and also wanna get some nice looking wheel that i can use both on street and track.

M.Bonanni

18 x 9.5" front with 275/35/18
18 x 10" rear with 285/35/18

There are a lot of great double duty street/track tires out there right now, most are around the 140-220 UTQG (treadwear) rating. The Hankook R-S3 is my personal favorite as its the grippiest on the track and also quite affordable in comparison to other tires in its class.

__________________
MikeBonanni.com
Twitter: http://www.twitter.com/MikeBonanni
Facebook: http://www.facebook.com/MBonanni36
Function > Form

bigpat728

awesome, i may just put some real good tires on my stock wheels. and just use them for track days then. thank you. btw i love the video.

ryan0

I've heard too many people say "ice mode" kicked in when they screw up.

So that's what we are talking about right? the example of where the ABS kicks in when not needed and basically any real braking goes away is "ice mode"? And mikes example of tapping the brake and it kicks in super hard is something different?

All cars have brake issues and "ice mode" seems to be a BS catch all. I think it needs to be better defined in order to help everyone.

If it can't be precisely defined, there needs to be more discussion about brakes in general than just blaming the car.

"Trail braking" and suspension dynamics can cause the rear to step out... and are the usual culprits.

After that, you can look at the cars. Bias, fade, computers, ABS blocks, vacuum, lines, etc were all designed for the cars on the street, and work arounds and/or driving changes need to be accepted if you're going to track the car.

It's not really Nissans fault if a street car spins on track. It's the drivers.

....in my opinion.

__________________
... needs more NOS.

M.Bonanni

This. Ice mode is just a descriptor for the most common occurrence but it doesn't always feel like ice. The problem is the ABS engaging in general so maybe we call it "safe mode." All cars have certain parameters that have to be met to engage ABS, the 370Zs just seems to be much more intrusive for track driving than other cars.

__________________
MikeBonanni.com
Twitter: http://www.twitter.com/MikeBonanni
Facebook: http://www.facebook.com/MBonanni36
Function > Form

Shamu

SO just ask yourself this question. Are you WOT down long straight and going immediately to brakes with no coasting? In other words depleting vacuum all way down straight with WOT and then not building vacuum with long enough deacceleration?

I wish more people would just put big vacuum can on their 370Z brake circuit. With that mod and understanding that our issues are primarily vacuum deprivation you can pretty much get around 99% of ice mode our cars expereince. To date Im close to a year of no Ice mode after being plagued by ice so badly that I disconnected abs for a nearly an entire season while I worked on solutions.

__________________
Grant

Sh0velMan

Can you just post a photo of your configuration already? lol I believe you, show me how you handled it so I can copy! hahahah

__________________
Buy My Car! | Build Thread

Reaper42

Yea Shamu, thats like the fifth time you have been asked with no reply. Can you please provide info on your set up so you can help the rest of the community out....including links to exact parts and some pics of yours.

__________________
Sponsor roll call: Get Lucky Brand | TOYO TIRES | Element Graphics | Unique Fabrication
Follow on fb- Jon Sackett and Instagram @GetLucky370
GetLucky370

Shamu

Here u go.

__________________
Grant

Shamu

The hard pedal and no brake pressure are classic symptom of low vacuum and ice mode.

Its a design flaw by Nissan and I completely reject that "all cars have braking issues" There are many car when you put good fluid and set of track pads will work just fine in track day enviroment. It is Nissans fault for developing a car they say is track ready with braking system that has real issues.

Also I had a rear caliper with less than 8000 miles break on track that did cause me to spin. I controlled car and stayed on track but my expereince with 370Z's brakes has been less than positive.

Heck my old 70's era Porsche/VW 914 had better more reliable brakes than 370Z!

__________________
Grant

ryan0

Now that's a good post.

__________________
... needs more NOS.

Sh0velMan

Something like this? You just put it in series with the factory hose from the manifold to the booster?

Summit Racing® Vacuum Reservoirs SUM-G1464 - SummitRacing.com

__________________
Buy My Car! | Build Thread

Dwnshift

That is it.

M.Bonanni

Well it certainly is inexpensive enough. If more people try it out with success then maybe it will be a good band-aid until I can do a dedicated track build. I probably will still not trust the brakes 100% though until I bypass that ABS system all together.

__________________
MikeBonanni.com
Twitter: http://www.twitter.com/MikeBonanni
Facebook: http://www.facebook.com/MBonanni36
Function > Form

martin82

For me Ryan, this happened at butttonwillow driving cw13, at club corner, I don't need to brake or anything going into it, but when I hit club corner, I don't know what happened but one caliper grabbed for a second...
This only happened once so far out of 30 track days or so.