Fortune Auto 510

ConekillerZ34

Inducing too much understeer isn't too easy to do. I run 1000lb/800lb (not exactly 18k/14k but close), and I have Hotchkis front and rear. I run my rear bar on the softest setting and the rear shocks cranked pretty far down (autocross setup). Even then there is plenty of room for oversteer left.

FWIW, I had Fortune Auto 510s on my last Z, and was quite satisfied for the price. The current owner just sent the dampers in for their first service, 5 years in, at a cost of $300.
On that car I ran only about 60% of the spring rates that I do now, but FA should be able to set it up however you like.

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2016 Nismo 370Z | SCCA STU Autocross Build WIP
2015 GT-R Black Edition | Sold
2006 350Z SCCA STU prepped | Sold

justin_boy

alrighty boys

ordered the fortune auto's. 510 16k front/14k rear hyperco springs, aluminum dampers and heim joint upgrade. now i wait !!

hit up cygnus auto if you need anything, geoff is great

justin_boy

should i be worried that the aluminum dampers wouldnt be as durable as the steel ones? i understand our cars are double wish bone so there isnt that much stress on the shock anyways, is that correct?

Rusty

The coilovers are not load bearing per say. Just have the springs on them. Just make sure the double nuts on the bottom of the springs are tight.

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justin_boy

I won’t be installing, I’ll have the shop install them. Making sure the double nuts on the bottom are tight don’t have anything to do with the dampers being aluminum right?

Rusty

Well the tubes are threaded for the spring adjustment. If the lock nut is tight. You don't have anything to worry about. You will have more than enough threads for contact for the load.

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justin_boy

That is right. What I’m asking is the aluminum as durable as the steel in terms of bending?

also even if I got the steel dampers I would have to make sure the double nut at the bottom is tight right?

i have the choice to switch still

Brendan

Probably not but not in any way that would be appreciable. The main reason other dampers are made of steel is for cost.

Rusty

Not really. My 3" custom valved King shocks on my Power Wagon are steel. I picked steel over aluminum for strength. The remote reservoirs are aluminum on them. Those shocks are over $5,000 for 4.

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"The Difficult Anytime, The Impossible By Appointment Only"
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justin_boy

lol so why is it not applicable on the 370z? is it because of the way our suspension is set up?

Rusty

The Z is not experiencing the same forces as my truck offroad. I got around 16" of suspension travel. The shaft diameter is close to 3/4".

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浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
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justin_boy

Gotcha! Thank you for taking the time and explaining it to me like I’m
6. Okay so now I have peace of mind. I’ll stick with the aluminum damper body. Saves a pound each corner of unsprung weight and dissipates heat much quicker which apparently is important in double wishbone suspension

justin_boy

been thinking about changing the order to 18k front 16k rear, but im worried transitioning will be compromised. what do you guys think about that

Hotrodz

You need to consider that auto cross and circuit setups are different. Springs are easy items to change out. You have no aero. You also need to consider the track surfaces you run on. Bumpy and uneven surface are unforgiving if you spung too stiff. Smooth surfaces you can go stiffer. Do you like running curbs or not. Little things to consider. I would start were the majority do and then make adjustments as you get better and have a better idea of what might work best for you.

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justin_boy

yes i see. I mostly run streets of willow and button willow but mostly 80% towards buttonwillow. Button willow is an amazing track, pretty smooth as you know yourself im sure lol. only bad part on the track is riverside and you have to avoid a couple curbs cause the car gets squirrelly over some curbs anyways. but i feel like there are some curbs (bus stop, phil hill, the esses) that love being eaten even with high spring rates. correct me if im wrong. also want to eventually do auto club fontana which is pretty smooth and chuckwalla i heard is great as well

i made the change to 18k front/16k rear, just cause i have the personality to always be like "shoot, shoulda went more" , and i can always get the 16k/14k if i find these too aggressive like you've said before