It's about time, gutting the Nismo suspension.

Spooler · 08-22-2017, 11:10 PM

Quote:

Originally Posted by MaysEffect

In response to your pm. I believe you are dealing with the typical problems of a single adjustable damper. If you were to "revalve" these dampers, you would probably want to go with tighter compression shim stacks, and possibly leave the rebound stacks alone. This should allow you to run at lower adjustment levels without restricting the rebound flow.

Revalve will be an issue. This is the only problem with buying JDM coilovers. I will make a rear adjustment only and see what happens. I may have to look for another set. Oh yeah, heat is an issue. I didn't have this issue in the cooler weather. When it hit 90's and high humidity is when the issue raised it's head.

Rusty · 08-23-2017, 12:47 AM

Spooler, these coil-overs have a separate control for compression and rebound? Or is it one control for both compression and rebound? I reread the thread, and did not see this mention.

Spooler · 08-23-2017, 02:06 AM

Quote:

Originally Posted by Rusty

Spooler, these coil-overs have a separate control for compression and rebound? Or is it one control for both compression and rebound? I reread the thread, and did not see this mention.

Just one adjustment. If I had to do it again, I would go a different route. Like I said, this is a learning process. I am learning a ton and this will continue for a long time....LOL

cv129 · 08-23-2017, 11:41 AM

Quote:

Originally Posted by MaysEffect

100% lost me now

. I'm not privy to the forum rules that won't allow you to explain the correct problem, i'm sure you guys know better than me. I never came across such a rule

Unless the drives took place in a private track, my guess is spooler was trying to avoid vivid description of his test drive.

Rusty · 08-23-2017, 01:30 PM

Quote:

Originally Posted by cv129

Unless the drives took place in a private track, my guess is spooler was trying to avoid vivid description of his test drive.

Rusty · 08-23-2017, 01:38 PM

Quote:

Originally Posted by Spooler

Just one adjustment. If I had to do it again, I would go a different route. Like I said, this is a learning process. I am learning a ton and this will continue for a long time....LOL

With your set-up. Your settings will have to be a compromise. You might get the compression right, but the adjuster maybe giving you too much rebound or too little. Or something like that. You need coil-overs with separate controls for compression and rebound to do what you want.

OptionZero · 08-23-2017, 01:47 PM

Quote:

Originally Posted by Spooler

Revalve will be an issue. This is the only problem with buying JDM coilovers. I will make a rear adjustment only and see what happens. I may have to look for another set. Oh yeah, heat is an issue. I didn't have this issue in the cooler weather. When it hit 90's and high humidity is when the issue raised it's head.

AST can rebuild aragostas i believe. They have US facilities, i think at infineon raceway

MaysEffect · 08-23-2017, 02:43 PM

Quote:

Originally Posted by cv129

Unless the drives took place in a private track, my guess is spooler was trying to avoid vivid description of his test drive.

ahh yes..passive incrimination

MaysEffect · 08-23-2017, 03:01 PM

Quote:

Originally Posted by OptionZero

AST can rebuild aragostas i believe. They have US facilities, i think at infineon raceway

That's not really local to him. The go to shop near us is Performance shock inc. If you go to the Penske shock site, they have a list of approved shops.

I'm not sure why JDM dampers would be any harder to rebuild. As long as they are not sealed, they should be rebuild-able. JIC, HKS, TEIN all offer rebuild-able products.

If you bought sealed shocks, you should go ahead and throw them in the trash now. If the Aragosta's are a AST design and are not marked as "sealed" they should be 100% open for maintenance. Whether or not its worth the cost is another question.

As stated, they are not a 2-way adjustable design, so you are limited there.

Nitron shocks may offer a 2-way/3-way design that is very customizable. You can buy with or without springs with very little hassle. You just have to pay the UK exchange rate and shipping

.

Goodluck

MaysEffect · 08-23-2017, 03:39 PM

Quote:

Originally Posted by Spooler

Yeap, I agree. The thing is you can only go up around 1Kg/mm on spring rates before you need a re-valve. I can't get 13Kg/mm Swift springs in the 10" length. I can only get 14kg/mm.

For clarification. Most adjustable dampers of any kind has a range of 0-300ibs of compression force. You could easily go up or down 3kg without needing to revalve the dampers.

With regards to spring size and rates. You'd want to step down in length if you increase the rate to maintain a relevant spring load. Not doing so will severely alter preload. Swift lists this information on the site for each spring in imperial and metric.

OptionZero · 08-23-2017, 04:40 PM

AST and Aragosta offer double adjustable options with remote reservoirs, but of course will add cost

But you'd have to sell your current coilovers. Its not easy to move $2,000-$3000 parts

Jhill · 08-23-2017, 06:53 PM

Quote:

Originally Posted by MaysEffect

For clarification. Most adjustable dampers of any kind has a range of 0-300ibs of compression force. You could easily go up or down 3kg without needing to revalve the dampers.

With regards to spring size and rates. You'd want to step down in length if you increase the rate to maintain a relevant spring load. Not doing so will severely alter preload. Swift lists this information on the site for each spring in imperial and metric.

That last statement sounds odd to me. I have always seen the opposite. As you jump in spring rate the coil thickness has to increase but the space between the coils must be the same otherwise you alter the springs stroke length before coil bind (absolutely not good). So with thicker coils but same gap then overall length must increase otherwise your slapping a 4in stroke spring on a 5in stroke damper and bottom out will be a very big surprise.

Spooler · 08-23-2017, 07:30 PM

Quote:

Originally Posted by OptionZero

AST and Aragosta offer double adjustable options with remote reservoirs, but of course will add cost

But you'd have to sell your current coilovers. Its not easy to move $2,000-$3000 parts

Or, buy another car to put my current ones on. Yes, this sounds better.

Spooler · 08-23-2017, 07:32 PM

If I change. I will buy a complete new setup. They will be double adjustable on the 2nd set. LOL

OptionZero · 08-23-2017, 07:43 PM

hrm, i just dug thru the AST USA website. No products listed for the 370Z. i coulda sworn they at least had one way adjustable ones up there

08-23-2017, 12:47 AM	#197 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Spooler, these coil-overs have a separate control for compression and rebound? Or is it one control for both compression and rebound? I reread the thread, and did not see this mention. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-23-2017, 04:40 PM	#206 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,225 Drives: 15 370Z Nismo 6MT Rep Power: 214100	AST and Aragosta offer double adjustable options with remote reservoirs, but of course will add cost But you'd have to sell your current coilovers. Its not easy to move $2,000-$3000 parts __________________ OptionZero Build Thread

08-23-2017, 07:32 PM	#209 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,798 Drives: 2013 Nismo 370z Rep Power: 2684392	If I change. I will buy a complete new setup. They will be double adjustable on the 2nd set. LOL Hotrodz likes this.

08-23-2017, 07:43 PM	#210 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,225 Drives: 15 370Z Nismo 6MT Rep Power: 214100	hrm, i just dug thru the AST USA website. No products listed for the 370Z. i coulda sworn they at least had one way adjustable ones up there __________________ OptionZero Build Thread

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