Konis are here!!!!
Thanks John..
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
- 
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
- 
Originally posted by Jhanna
Amy,
I am running the Koni front shocks at 1/2 turn from full soft as full soft was not providing sufficient damping.
I still have the Koni's on the rear at full soft - have about 1,000 miles on them now. I will be going back to the G35 Coupe shocks on the rear as they still compare more favorably for traveling on concrete interstates and rough roads. I don't currently autocross or track the car. However, I can advise that the car is easier to control at the limit on hwy. entrance/exit ramps with the G35 shocks on the rear. Bumps and/or concrete segments do not upset the suspension at all, whereas the rear Koni's still want to cause some bounce which causes the tail to step out unexpectedly.
The rear Koni's did soften up considerably in the 1st 500 miles.
There has been no significant change in the last 500.
John
Amy,
I am running the Koni front shocks at 1/2 turn from full soft as full soft was not providing sufficient damping.
I still have the Koni's on the rear at full soft - have about 1,000 miles on them now. I will be going back to the G35 Coupe shocks on the rear as they still compare more favorably for traveling on concrete interstates and rough roads. I don't currently autocross or track the car. However, I can advise that the car is easier to control at the limit on hwy. entrance/exit ramps with the G35 shocks on the rear. Bumps and/or concrete segments do not upset the suspension at all, whereas the rear Koni's still want to cause some bounce which causes the tail to step out unexpectedly.
The rear Koni's did soften up considerably in the 1st 500 miles.
There has been no significant change in the last 500.
John
Originally posted by Jhanna
"
Ron, I'm 59 going on 16, but I don't have a 16 year old body, ride is very important to me, but so is handling. I would suggest you test drive a G35 Coupe and see if you like the ride and handling. If you do, then you must decide how much handling you can give up for the ride. --All G35 Coupes have the sports suspension--, but they are a couple of hundred lbs heavier than the Z, so they will not be exactly the same ride as the Z is with the Konis. Different anti-roll bars can firm the ride if you swap to G35 shocks and assist better handling. One owner likes the front Konis and rear G35 Coupe shocks because of the better ride. "
Please be advised that when I ordered the G35 Coupe shocks, I had a choice of base model or sport suspension versions. I selected the base model and this is what has given me the ride compliance I spoke of in my earlier post.
"
Ron, I'm 59 going on 16, but I don't have a 16 year old body, ride is very important to me, but so is handling. I would suggest you test drive a G35 Coupe and see if you like the ride and handling. If you do, then you must decide how much handling you can give up for the ride. --All G35 Coupes have the sports suspension--, but they are a couple of hundred lbs heavier than the Z, so they will not be exactly the same ride as the Z is with the Konis. Different anti-roll bars can firm the ride if you swap to G35 shocks and assist better handling. One owner likes the front Konis and rear G35 Coupe shocks because of the better ride. "
Please be advised that when I ordered the G35 Coupe shocks, I had a choice of base model or sport suspension versions. I selected the base model and this is what has given me the ride compliance I spoke of in my earlier post.
Originally posted by lawnmore
Thank you very much for that.I would welcome your further comments on your ride impressions.
Thank you very much for that.I would welcome your further comments on your ride impressions.
Er Lawnmore:
I hope Eric has a chance to Give you a Ride in the White KONI Mule.. Drive a bit and have him set front Full soft... I did that this morning..
I feel the Koni valve is Full soft with Valve Closed then Just a crack open for the compliant ride John Hanna is seeking..
Just an early morning experiment while Commuting.
The rears are set to 1/8 turn ( half a sweep - on Eric's and Mine )
Cheers Amy
-
Originally posted by benzz280
if there is someone who reports that these will solve the tire feathering issue, i am SOLD!!!
waiting...waiting...waiting...
if there is someone who reports that these will solve the tire feathering issue, i am SOLD!!!
waiting...waiting...waiting...
I guess I could hire some one to drive it up and down the Central Valley of California while I'm working.. Ha ! I couldn't pay for the tickets..

This car is stock except for the suspension.. No lean through tight turns but smooth at Speed. Translation: low speed wheel noise to chassis. Over the road gate, very stable. Difference of 100 to 150 not very noticable. Just a number..
Time to look at a BBK. ( Er Big Brake Kit - Stoptech - 13" fronts for the 17's in the Garage. )
Or sell all 17's (8) and Go 18's only and put in the StopTech 14" BBK
Cheers Amy
-
Originally posted by AmyCroft
Can you hang for 3000 Miles at 120 Miles per day? I got to go to work from Orange County to North San Fernando Valley..
I guess I could hire some one to drive it up and down the Central Valley of California while I'm working.. Ha ! I couldn't pay for the tickets..
This car is stock except for the suspension.. No lean through tight turns but smooth at Speed. Translation: low speed wheel noise to chassis. Over the road gate, very stable. Difference of 100 to 150 not very noticable. Just a number..
Time to look at a BBK. ( Er Big Brake Kit - Stoptech - 13" fronts for the 17's in the Garage. )
Or sell all 17's (8) and Go 18's only and put in the StopTech 14" BBK
Cheers Amy
-
Can you hang for 3000 Miles at 120 Miles per day? I got to go to work from Orange County to North San Fernando Valley..
I guess I could hire some one to drive it up and down the Central Valley of California while I'm working.. Ha ! I couldn't pay for the tickets..

This car is stock except for the suspension.. No lean through tight turns but smooth at Speed. Translation: low speed wheel noise to chassis. Over the road gate, very stable. Difference of 100 to 150 not very noticable. Just a number..
Time to look at a BBK. ( Er Big Brake Kit - Stoptech - 13" fronts for the 17's in the Garage. )
Or sell all 17's (8) and Go 18's only and put in the StopTech 14" BBK
Cheers Amy
-
Cheers
Originally posted by AmyCroft
Thanks John..
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
-
Thanks John..
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
-
Originally posted by AmyCroft
Thanks John..
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
-
Thanks John..
Good Information.. Post a note when your changes are made.
I was feeling a little noisy this morning on Concrete Freeway ( 2 ) pulled off on Mountain and set the Front Konis to full soft.. Last twenty miles were smoother.. Lost a little turn-in but the H Sways are plenty stiff.
Rear is setting at one/half sweep from full soft. ( one eight of a turn ) Just enough to stop rear end vertical oscilation.
Cheers Amy
-
Reinstalled the G35C shocks on rear. This reconfirms my opinion about this being the correct combination for a compliant ride. One that allows fairly long distance cruising without undue fatigue to the passengers. I will stay with this unless my useage of the car changes. I have found that I need to go about 1 full turn from full soft on the front Koni's when the car has two passengers and luggage on board. I'll hang on to the rear Koni's for now. Never know when needs will change.
Thanks for your input on this post.
John
Originally posted by AmyCroft
... Now I have Hotchkis Progresive springs and Sways. There is no roll, at current settings. Middle 58% over front, 62% over rear ( softest )
... Now I have Hotchkis Progresive springs and Sways. There is no roll, at current settings. Middle 58% over front, 62% over rear ( softest )

I've got the Hotchkis springs and sways as well. The springs are linear, not progressive. Also, the sway's middle front results in 32% increase in stiffness and softest rear is 54%. Are you running a prototype setup of theirs?
IMO, including the stiffer springs, with middle front and rear there's still a little too much sway, front especially. I'm going to try full stiff up front and see how that goes. Ride however is much improved, but the side-side jiggles are still quite pronounced. I wonder how much that has to do with bushings and OEM tires?
Originally posted by FritzMan
Amy, you're confusing me.
I've got the Hotchkis springs and sways as well. The springs are linear, not progressive. Also, the sway's middle front results in 32% increase in stiffness and softest rear is 54%. Are you running a prototype setup of theirs?
IMO, including the stiffer springs, with middle front and rear there's still a little too much sway, front especially. I'm going to try full stiff up front and see how that goes. Ride however is much improved, but the side-side jiggles are still quite pronounced. I wonder how much that has to do with bushings and OEM tires?
Amy, you're confusing me.

I've got the Hotchkis springs and sways as well. The springs are linear, not progressive. Also, the sway's middle front results in 32% increase in stiffness and softest rear is 54%. Are you running a prototype setup of theirs?
IMO, including the stiffer springs, with middle front and rear there's still a little too much sway, front especially. I'm going to try full stiff up front and see how that goes. Ride however is much improved, but the side-side jiggles are still quite pronounced. I wonder how much that has to do with bushings and OEM tires?
Originally posted by jmark
Don't forget the OEM shocks!
Don't forget the OEM shocks!
Originally posted by FritzMan
Amy, you're confusing me.
I've got the Hotchkis springs and sways as well. The springs are linear, not progressive. Also, the sway's middle front results in 32% increase in stiffness and softest rear is 54%. Are you running a prototype setup of theirs?
IMO, including the stiffer springs, with middle front and rear there's still a little too much sway, front especially. I'm going to try full stiff up front and see how that goes. Ride however is much improved, but the side-side jiggles are still quite pronounced. I wonder how much that has to do with bushings and OEM tires?
Amy, you're confusing me.

I've got the Hotchkis springs and sways as well. The springs are linear, not progressive. Also, the sway's middle front results in 32% increase in stiffness and softest rear is 54%. Are you running a prototype setup of theirs?
IMO, including the stiffer springs, with middle front and rear there's still a little too much sway, front especially. I'm going to try full stiff up front and see how that goes. Ride however is much improved, but the side-side jiggles are still quite pronounced. I wonder how much that has to do with bushings and OEM tires?
Here are the specs from Hotchkis web page.
----------------------------------------------------------------
Sport Sway Bars
Item#: 22413
2003+ Nissan/Infinity 350Z/G35
Hotchkis Tuning Sport Sway bars improve your handling and reduce body roll. Turn in with confidence and late brake in the corners with our track tested lightweight hollow sway bars. Sway bar sets include front and rear bars, greasable bushings, and brackets.
Front 1 3/8" (35MM) Hollow (Bar Weight 13.5lbs)
3 Position Adjustable
Rate Increase over stock
+9%,+32%,+63%
Rear 15/16"(24mm) Hollow (bar weight 5.5lbs)
3 Position Adjustable
Rate Increase over stock
+54%,+92%,+146%
-----------------------------------------------------
so I'm +32% over stock in front, +54% over stock in rear. And about one inch drop on both axels. Feels pretty good at the moment. I can say that I used to be able to kick out the rear end at will. However with the Koni's added and move Front Sway from +9 % over to 32% ( middle ) I can no longer kick the rear end out.
We even tried it in last saturday's rain.
I have too much negative camber in the rear, and will adjust on my day off friday. I hope this lessens the lateral move on ditches across turns. I took Ed Mendez for a little ride Monday night. One 25 mph turn at 40 mph was an example. "Very firm" is what his impression was. Ed's Z is stock 6Spd Touring.
Also John Hanna Wrote:
Amy,
Reinstalled the G35C shocks on rear. This reconfirms my opinion about this being the correct combination for a compliant ride. One that allows fairly long distance cruising without undue fatigue to the passengers. I will stay with this unless my useage of the car changes. I have found that I need to go about 1 full turn from full soft on the front Koni's when the car has two passengers and luggage on board. I'll hang on to the rear Koni's for now. Never know when needs will change.
Thanks for your input on this post.
John
-----------------------------
I don't know John's configuration from memory.. But touring seems to be the goal - with out the car beating you up.
Koni's Half turn up front, stock springs and sways ( like Eric's PPW ) and G35 Base shocks stock rear springs and sways.
Elimination of bounce, and less butt shock... ( can I say Butt ? )
Back to FritzMan
I'm using production Springs and sways.
My question: At your current settings Mid Mid on sways +32%/+92% how can the car lean. Do you feel the car harsh yet?
What type of driving is your goal?
Also do you know the spring rate in pounds for front/rear springs..
Some one asked on a different post, and I could not remember.
I guess we are all shooting for a different soulution. Eric Boomer JHanna.. ( CS style ) Then JMark and your self want a tighter car.
Inquring minds what to know...

Cheers Amy
-
Originally posted by AmyCroft
My question: At your current settings Mid Mid on sways +32%/+92% how can the car lean. Do you feel the car harsh yet?
What type of driving is your goal?
Also do you know the spring rate in pounds for front/rear springs..
Some one asked on a different post, and I could not remember.
I guess we are all shooting for a different soulution. Eric Boomer JHanna.. ( CS style ) Then JMark and your self want a tighter car.
Inquring minds what to know...
Cheers Amy
-
My question: At your current settings Mid Mid on sways +32%/+92% how can the car lean. Do you feel the car harsh yet?
What type of driving is your goal?
Also do you know the spring rate in pounds for front/rear springs..
Some one asked on a different post, and I could not remember.
I guess we are all shooting for a different soulution. Eric Boomer JHanna.. ( CS style ) Then JMark and your self want a tighter car.
Inquring minds what to know...

Cheers Amy
-
With my current setup, I find the 350Z very easy to catch, good in powering out, and nice under threshold braking/turn-in (although brake dive with the Hotchkis springs is still too much IMO). Harshness is not an issue for me, with the Hotchkis springs I found it to be more firm while being less harsh. My concern right now is that I find the car really lacking on many cornering aspects when the road gets even slightly bumpy.
At slower 1 & 2 gear speeds the sway control is good, 3rd gear and higher I find the 350Z's limits are so high that it's overwhelming even the upgraded sways. Maybe I need more than a Hotchkis band aid (DA shocks and bushings IMO). The 350 is also the heaviest car I've tossed around so there might be some aspects to it's handling that I won't be able to address.
For me, the good news is that I find the potential is certainly there, it's just a matter of sorting things out. Thankfully this board is around to help out.
Hotchkis has published their spring rates, check there site.
This is a direct cut and paste from their site:
Front Front 9/16" (15mm) Drop
340 lbs/in
Stock 310lbs/in
Rear 3/4" (19mm) Drop
330 lbs/in
Stock 350 lbs/in
Greg
This is a direct cut and paste from their site:
Front Front 9/16" (15mm) Drop
340 lbs/in
Stock 310lbs/in
Rear 3/4" (19mm) Drop
330 lbs/in
Stock 350 lbs/in
Greg
Originally posted by JimProuty
I have noticed that the side-to-side wiggle that happens when running over a bump while turning is gone with the Konis. To me, this is a huge relief.
I've been following what Boomer has to say about the new Konis, and I have to say I agree with everything he's said. (And he didn't even pay me to say it
)
The Konis have made my car fun again: I don't have to continually make excuses for the car ("Oh, bumps and jiggling are the price of owning a True Sports Car"
).
I do think, however, that the Konis increase the understeer a bit.
I'll see how autocross goes this weekend...
I have noticed that the side-to-side wiggle that happens when running over a bump while turning is gone with the Konis. To me, this is a huge relief.
I've been following what Boomer has to say about the new Konis, and I have to say I agree with everything he's said. (And he didn't even pay me to say it
)The Konis have made my car fun again: I don't have to continually make excuses for the car ("Oh, bumps and jiggling are the price of owning a True Sports Car"
I do think, however, that the Konis increase the understeer a bit.
I'll see how autocross goes this weekend...
How did the AutoX go with the Konis?
Originally posted by jmark
Jim,
How did the AutoX go with the Konis?
Jim,
How did the AutoX go with the Konis?
I'd hoped to hear back from Gordon @ Koni about the adjustment range, but he didn't reply. I sure wish they'd use instructions with actual words...


