STH Multi-Step Build Plan/Thread

[SeeThruHead]

Crappy wrap job on my b pillar covers because i was bored.

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Really digging the bent and powercoated interior replacement parts skillard makes.

Wouldn't mind doing some of that for my interior.

My carbon center console is in china somewhere. Not sure when that's coming.

Replaced the intake filters today. Going to replace the cabin filter when i'm not so lazy. and picked up motul 600 for brakes and clutch. Castrol SRF was way too expensive.

The other day I sprayed my engine bay down with Citrol 266.

It's the only thing that was able to remove this strange adhesive residue on all the painted surfaces on the interior of my engine bay.

The adhesive surfaces had attracted so much dirt. That the engine bay paint looked like sandpaper. Couldn't get to it all but the adhesive turned milky white and was able to rub away. I wonder if that's some kind of anti corrosion coating that was sprayed in there. Either way it looked terrible.

Really envious of people who've taken out their engines to do a proper tuck and shave in there. One day.

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I was waffling about getting these are some BRIDE seats but after seeing them in the car. Wow. they look incredible.

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that's a saucy VQ.

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Purchased through onefor_z_forcarbon

on instagram

the weaves aren't perfect
and it did take a while of the "factory" doing the wrong order twice before they got it to what i asked them for.

But overall i'm pleased with the result.

[SeeThruHead]

WOW

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Coolest future concept i've seen yet.

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been trying to uprate my suspension knowledge over this dreadful winter.

with all the talk about "best sway bars" floating around.

I know everyone says no bar rear and stiff bar front to prevent understeer. And some people try to explain that in a number of threads but I'll admit to still not getting it.





Found this to be a really good videos. Of course like every other video or article i read on the subject it contradicts the collective knowledge of all the actual track drivers in this forum. Just seems like the basics laid out don't apply to the 370z for some reason.

The only thing I can think of is that the inherent roll stiffness of the 370z is heavily rear biased. Causing excessive understeer. so much imbalance that even adding a heavy front bar and removing the rear bar won't flip the balance the other direction. It will just get you closer to 50/50 roll stiffness front and rear. /shrug.

[SeeThruHead]

These videos are like crack

[Averying]

Originally Posted by SeeThruHead

been trying to uprate my suspension knowledge over this dreadful winter.

with all the talk about "best sway bars" floating around.

I know everyone says no bar rear and stiff bar front to prevent understeer. And some people try to explain that in a number of threads but I'll admit to still not getting it.





Found this to be a really good videos. Of course like every other video or article i read on the subject it contradicts the collective knowledge of all the actual track drivers in this forum. Just seems like the basics laid out don't apply to the 370z for some reason.

The only thing I can think of is that the inherent roll stiffness of the 370z is heavily rear biased. Causing excessive understeer. so much imbalance that even adding a heavy front bar and removing the rear bar won't flip the balance the other direction. It will just get you closer to 50/50 roll stiffness front and rear. /shrug.

Originally Posted by SeeThruHead

been trying to uprate my suspension knowledge over this dreadful winter.

with all the talk about "best sway bars" floating around.

I know everyone says no bar rear and stiff bar front to prevent understeer. And some people try to explain that in a number of threads but I'll admit to still not getting it.





Found this to be a really good videos. Of course like every other video or article i read on the subject it contradicts the collective knowledge of all the actual track drivers in this forum. Just seems like the basics laid out don't apply to the 370z for some reason.

The only thing I can think of is that the inherent roll stiffness of the 370z is heavily rear biased. Causing excessive understeer. so much imbalance that even adding a heavy front bar and removing the rear bar won't flip the balance the other direction. It will just get you closer to 50/50 roll stiffness front and rear. /shrug.

Originally Posted by SeeThruHead

been trying to uprate my suspension knowledge over this dreadful winter.

with all the talk about "best sway bars" floating around.

I know everyone says no bar rear and stiff bar front to prevent understeer. And some people try to explain that in a number of threads but I'll admit to still not getting it.





Found this to be a really good videos. Of course like every other video or article i read on the subject it contradicts the collective knowledge of all the actual track drivers in this forum. Just seems like the basics laid out don't apply to the 370z for some reason.

The only thing I can think of is that the inherent roll stiffness of the 370z is heavily rear biased. Causing excessive understeer. so much imbalance that even adding a heavy front bar and removing the rear bar won't flip the balance the other direction. It will just get you closer to 50/50 roll stiffness front and rear. /shrug.

True that it seems like the 370z platform contradicts everything online that stiffer bar reduces grip. It’s a fact that the overall grip of a car will be higher when the tires are more evenly loaded, which is the exact opposite of what a sway bar does (removes load from inside tire and applied it to the outside tire). So it’s especially confusing that having a stiffer front bar, which distributes the load more, actually increases front grip.

My understanding is that the z has a lot of roll in the front from the factory, which can make it more difficult to control the tires with respect to the ground, considering camber gain during roll. With a stiffer front bar, the tire is more controllable which makes setting up the car easier for achieving higher grip in most cases. BUT… I’m no expect, just trying to make sense of everything I can find online. I certainly don’t have enough track experience yet to justify how a sway bar change actually affects grip levels.

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[Averying]

Originally Posted by SeeThruHead

Stiff Front Sway Bar Thoughts

There's this, but he mentions adding a stiffer sway bar will increase the load on the outer tire. But everything in any video and article says that's the opposite that will happen. So I have no idea.

Another thing that I’m thinking about is that since the Z is front heavy, you’d think it would naturally oversteer. By adding a stiffer front bar, which typically would introduce more under steer, the Z would behave more neutrally. This should make the car easier to drive and possibly faster because of this.

Who knows….


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[SeeThruHead]

i didn't delete that post fast enough i was remembering wrong.

Adding stiffer front bar would increase the load on the outside tire. which if the car had 50/50 roll stiffness would decrease the front grip.

[Averying]

Originally Posted by SeeThruHead

i didn't delete that post fast enough i was remembering wrong.

Adding stiffer front bar would increase the load on the outside tire. which if the car had 50/50 roll stiffness would decrease the front grip.

And adding load to the outside tire, and removing it from the inside tire, causes lower overall grip. That’s just physics related to tire load sensitivity and the fact that the coefficient of friction decreases with higher tire load.

So it’s something else going on that makes the Z have less under steer with a stiffer front bar.


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[SeeThruHead]

Originally Posted by Averying

And adding load to the outside tire, and removing it from the inside tire, causes lower overall grip. That’s just physics related to tire load sensitivity and the fact that the coefficient of friction decreases with higher tire load.

So it’s something else going on that makes the Z have less under steer with a stiffer front bar.


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yeah exactly my confusion. Also would be interesting to know how many people with stock suspension or stock balance spring rates have done the roll bar thing. Or if they experienced the decrease in understeer with wildly different than stock balanced spring rates front/rear.

I don't think i'm going to really find an answer i guess. Like it would be easier to just buy suspension and tires and then test different sway bar setups to see what is most balanced.
But honestly I want to know why more than I care about the resulting handling.

[Averying]

Originally Posted by SeeThruHead

yeah exactly my confusion. Also would be interesting to know how many people with stock suspension or stock balance spring rates have done the roll bar thing. Or if they experienced the decrease in understeer with wildly different than stock balanced spring rates front/rear.

I don't think i'm going to really find an answer i guess. Like it would be easier to just buy suspension and tires and then test different sway bar setups to see what is most balanced.
But honestly I want to know why more than I care about the resulting handling.

Same here! The engineer side of my brain tells me I have to justify WHY it could possibly make sense even though it has been confirmed by all the track guys on here.


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