Can aftermarket coilover suspension be softened up?

Followers

July 5, 201016 yr

Thinking of buying a 300zx with coilovers, however have heard they can give a really hard ride. Is there anyway I can change the springs to give a softer ride, will this be compatible with the damping even if adjusted to softest setting?

Quote

July 5, 201016 yr

You can change the spring rates with new springs, which has a huge affect on ride quality, as long as you can get replacement springs in a range of spring rates for those coilovers

Quote

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.

Reply to this topic...

Followers

Go to topic listing

No registered users viewing this page.

No registered users viewing this page.

Project Black Sunshine - The 300bhp NA

Great post! Very interesting. So I've been dealing with similar concerns on my build as well before I decided to tear things down and make some changes. I have also been in talks with a local performance custom exhaust builder and discussed with him my concerns with the typical aftermarket header setups available for these cars. Is the same shop going to do the research for you or are you taking it to another company? I would be interested in testing some stuff as well or can provide further data if necessary for my race car NA 300ZX slicktop. Our projected power ceilings are not so dissimilar. My machinist shop and I are currently still in the build phase for the new setup.

By protoj · 2 hours ago2 hr
New member (UK)

You’ll likely find the cabling around the knock sensor rather than the sensor itself is faulty. If I remember correctly the stock knock sensor is only activate in a certain portion of the rev range, ironically not at the most dangerous point. Basically it’s pretty crude. I deleted mine and fitted a resistor to mimic its function, very common modification.

By Stephen · 4 hours ago4 hr
My daughter calls it Toothless the Dragon: My ‘95 TT Z

What a journey it’s been. Yesterday, 4 years and 362 days since the terminal engine failure of my EPR “built” VG30DETT, my Z was back on the dyno.
I’m happy to report the engine that I specced, prepped and assembled survived and took everything that was thrown at it, with oil pressure being reported as “fantastic”. For a “hobbyist” I should be proud.

But I didn’t get the dump of dopamine I was expecting at the conclusion of the day, that rush of “I did it”. Instead I got the cold sweat of dread when Romain of RaceCal Ltd came off the dyno to debrief me. Fundamentally, everything is fine and the Z has a solid tune, but not without issue…. and I think it’s that very BUT that has taken the sheen off was a good day.

Firstly, the engine has a fuelling imbalance between banks that shifts dependant on load. I have a vague recollection that I’ve had this problem before and never got to the bottom of it.
That in combination with an issue with one of the hub dyno’s having a peculiar loading issue, brought about the conclusion of the day in the interests of safety. And I’m completely content with that decision!

A few other minor issues including a small oil leak that needs to be found as well as the curse of the ATi damper PS belt issue, meaning a 85 mile drive home with no PS.

I think the final factor in my overall post dyno emotions are that I thought i had everything in place to get the optimum output for this setup….. and I don’t. I need to invest time in making proper intercooler ducting to get that IAT recovery and efficiency to be able to make back to back runs. I need to add a second fuel pump to give me more head room to allow the potential maximise the 2860 turbos. I need to find the cause of this imbalance to remove any risk of misfuelling so that tune can be absolutely bang on to really optimise this setup. So, the journey isn’t over yet….. more work, more learning, more money 😂😂😂.

Just a quick one to say thanks. Thanks to Romain of RaceCal Ltd for his time, for his ability to recognise my level of understanding and communicate to me where I can solve issues and make improvements. I look forward to working with you again! #vg30dett #z32 #300zx

(And depending on your chosen calculation, that’s 640 hp and 550 lbs ft at the flywheel, roughly)

By nickz32 · 5 hours ago5 hr
Project Black Sunshine - The 300bhp NA

Well done mate. 40hp gain on an NA is no joke!

By nickz32 · 5 hours ago5 hr
New member (UK)

Welcome to the owners club and the top man for checking your Z is Jimmer.

By Gaz 300 · 5 hours ago5 hr

Can aftermarket coilover suspension be softened up?

Featured Replies

Join the conversation

Recently Browsing 0

Recently Browsing 0

Popular Posts

Project Black Sunshine - The 300bhp NA

New member (UK)

My daughter calls it Toothless the Dragon: My ‘95 TT Z

Project Black Sunshine - The 300bhp NA

New member (UK)

Important Information

Account

Navigation

Search

Configure browser push notifications

Chrome (Android)

Chrome (Desktop)

Safari (iOS 16.4+)

Safari (macOS)

Edge (Android)

Edge (Desktop)

Firefox (Android)

Firefox (Desktop)