Calling all True Coilover rear suspension users
 

Hey guys, I spent a while searching, and short of finding some very interesting arguments that tend to contradict each other with no real long term evidence of either side being right, Im looking for actual users of True Coilover rear suspension users to chime in.

So right now I have one of the only sets of MCA True Coilover custom Red sets for the 370Z in the USA and Ive been a bit leery of using them since they are a true coilover setup for the rear.

I am concerned about the rear shock tower and mushrooming. The car is a 2010 Nismo and is a weekend ride that spends most of its miles in the canyons and mountains.

So for the long term users, have you guys noticed any issues? Are there any rear shock tower reinforcement mods available like on the BMW? Im aware of the G-Spec rear shock tower bar, but Im talking about plates that get installed between the upper shock mount and the body to help prevent mushrooming.

MCA set these up to be linear but they claim the valving is much better than other true coilover designs with a much better bumpstop design to help reduce the chance of any sort of chassis fatigue.

So am I being paranoid or could true coilover rears cause issues over time?

I've gone true type with reinforced rear shock tower for the exact reason you stated. Did it as a precaution. Mine is a full weight street car and has not seen track times.

But, I don't think there has been any issue with guys running true type rear without reinforcement to the towers.

There are ones that are heavily tracked cars and have roll cage welded to the shock tower so that naturally reinforces them. Then there are members that are dual purpose cars with no reinforcement.

I have installed quite a few sets of "true" coilovers on the 370z. The tower seems to hold up fine, the bushing in the knuckle goes to hell way faster however.


Zack

What did you want to do with your car? What's it's purpose.

Mostly mountain and canyon runs he said.

I think best example that I can think of for his peace of mind is member wstar's setup. "True type" rear, car got a lot of track times. He didn't have any roll cage or tower reinforcement at the time of the true type being installed. I think OP can send him a message. Also I think Masterbeatty is running true type rears and he does track/autocross (forgot which one, or both...), and I don't think he reinforced the shock towers.

Thanks for the references. I will hit them up. From what you can recall they had no complaints?

It seems to be too much work and expenditure on something that can be accomplished by alternative coilover set ups and even with Koni/switft set ups. But that's just me. Hope you land the kind of set up you are looking for.

I agree with you however I already have the coilovers. I'm just seeking experienced true coil users so I can decide if it's worth it. I've considers Koni yellows and Swift springs but I'm not sure I want to go as low as Swift Spec-R are.

Are the NISMO springs the same ride height as sport springs?

Nope no complaints. I have not seen any case of shock tower failure after using true type coilovers. I don't recall any in the G37 (which is heavier) either.

I mean, it's not like the shock tower does not bear any weight/force in the OEM setup. I did mine just because I'm very risk adverse.

Stock for stock I don't think there was much of a difference. I looked at my old brochure and there was not much difference. The roadster was higher.

Thanks for the input guys. I think I'll give it a try. Just need to upgrade the shock bushing in the knuckle since I assume the rubber one will wear out exponentially faster carrying the weight of the car compared to just the damper.

I just looked through your journal and see that you went with full reinforcement of your shock towers in the rear, for a moment I thought you were running an untouched rear shock tower, so now Im second guessing this again.

Ill probably just ditch the MCA suspension.

your ride. do what you want. but i doubt you would have any problems with a true type setup. i suppose if you are planning on keeping it for another 25years, and driving the %^# out of it. then i would go as far as saying reinforce it (i.e. I wouldn't switch back to OEM type to save a couple of hundred worth of reinforcements).

i have helped my brother install a set of OEM type and i have a true type. i would say that i much prefer the simplicity of the true type when it comes to making adjustments, as well as the ability to set preload.

just my 2cents.

I am just overly risk adverse, and biased toward suspension mods. For what it's worth, the shop charged me six hours for the reinforcement. I am sure it's due to the fact that I had them do other installations at the same time, so amount of shop hours assigned to the reinforcement work was a bit reduced. I deemed it a small price to pay for just extra peace of mind.

On the contrary, the two members I listed put their cars through more torture without any reinforcement.

All depends on how risk adverse you are.

Best of luck in finding the right decision for yourself.

I have had Zeal true coilovers on my G for over 8 years with pretty stiff springs. I track and auto-cross the car along with street driving and have had no issues with the shock tower mounts.

I'm good, no issues, and 12k rear spring too. No comment on the bushing though as I have SPL spherical down there.

I had true coilovers on G sedan for 3 years. No issues-tracked and autocrossed.

Same here, no problems for 2 yrs now. Snyolimit and i have the Stance Pro-Comp 2's and all SPL stuff. I auto crossed it for two seasons and now it is a daily driver and no signs of mushrooming. The bushing does not appear to have any abnormalities, nor the bolt going through it. Some 350Z guys had that problem but I have not seen any signs. I took mine out last summer for another job and the bolt came out just as easy the day i put it in.

Anyone have any BC true coilovers? Also what do you guys use for the spring bucket delete. What rates are you using

You'll want this:
Adjustable Rear Toe Arms for the Nissan 370Z and Infiniti G37 | SPL Parts

as well as this:
Adjustable Rear Traction Arms for the 370Z and G37 | SPL Parts

and this:
Adjustable Billet Rear Camber Links for the 370Z and G37 | SPL Parts

Then you can go as low as you want and align your car essentially infinitely

What brands make a true type coilover that you guys like? I have used the BC br and dr series on 4 of my cars now and could not be happier for the purpose i use them for ( drift, and all around hooning ) but it doesn't look like they are making them for the 370:confused:

i think Stance is the most common

and if you have several thousand to spare, AST ?

Or JRZ...

I've seen a few Fortune Auto kits with true type rears as well.

I ran stance for 2 years and love them. Upgraded to Fortue Auto 500 with 14/10 and its a bit to stiff, thinking about doing 11/9

I am currently running Fortune Auto 510 true type coilovers. They are 14k front and 12k rear. So far they are a noticeable upgrade from the 500's non-true type.

I was gonna bring that up - i forgot what you were running

i didn't see true type on their website, so my bad

fortunes are good

You have to request them just as well as the upgrade to the 510 model.

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Stance, Fortune Auto, MCA, AST, JRZ, MCS, Moton, Penske

I’m running purple MCA true coil overs with tarmac spec spring options and am blown away how much of an improvement they’re compared to eibach springs I was running

Thanks for the reply’s guys, I was told to get the purple mca and they look nice but it might be too long of a build ship time, stance looks like they have them ready to ship everywhere if I didn’t want to go 14/8 or even 14/6. I live in Utah and the fourtune autos dont hold up in our salty weather. My friends springs after 2 years turned to rust

Not sure if that's a fair indictment without understanding the details. I don't see how any other brand mentioned will hold up in salt coated condition for an extended time without proper care.

I'd love to hear more about these. This thread is my first time hearing about MCA and I couldn't find much on them for 370Zs.

They are from Australia, seems to have a strong following. If I recall correctly, I think BGTV8 had a little experience with it before.

I’ve had teins,Bc racing, c-one and Nitron coil overs and the MCA coil overs out perform all of them in my opinion. I rang up MCA and told them what I use the car for and they then worked out what package would best suit me. They also do totally bespoke set ups to suit those with deep pockets. If you are not happy with the spring rates that you receive then they will change them free of charge. Excellent customer service and a genuine pride in their product.

Powered By Max makes a true set as well. Anyone had experience with them?

I use JRZ Rs Pros (1000F/450R)
I was considering at Motion Control Suspension (MCS) and Moton Suspension as well. I would stick with companies that have a presence in your country for any servicing needs would be difficult if you had to deal with international shipping.