Hello everybody, I think it is about time to upgrade my suspension parts as I got more seat time at the track and hopefully will reach the limit of the
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11-09-2016, 04:52 PM | #1 (permalink) |
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Time to upgrade the suspension ...
Hello everybody,
I think it is about time to upgrade my suspension parts as I got more seat time at the track and hopefully will reach the limit of the car with next two events and my car is pretty high for what it should be thanks to 255/40 295/35 tires on 19 wheels . Currently the car has only Whiteline front and rear swaybars. They worked pretty well to reduce body roll, but I want more, Also I want to reduce the center of gravity slightly, at least reduce the gained 7mm in height, and to be able to have better alignment setting. So my buy list for suspension is as follow: - SPL Front Camber Arm - SPL Rear Camber Link - SPL Rear Traction Link - SPL Lockout kit - SPL Adjustment Wrench aaaaaand coilovers. Pretty sure of SPL parts, but I would like to know if I need any other parts from their lineup, or I covered the necessary parts and more. Next thing, the famous coilover question which is better. I was pretty sure that I will go for Tein coilover coupled with their EDFC Active pro, however, looking at the race track that I participate at and the initial setup for the device and install costs, I preferred to invest the money on a better quality coilovers. So, the Z currently is serving as a weekend car and a track warrior for my pleasure. The setup I want is Street\Track oriented but more biased toward track, I would prefer to retain stock height or near stock height as streets here is not very low car friendly. I shortlisted some coilovers depending on recommendation, price, brand name from cheaper to most expensive, and beware that I can get JDM parts cheaper as I am in Asia (Middle east exactly) and shipping prices will be a lot cheaper. - Tein Monosport (still an option without edfc if it's a great set, would the rates be too high for an aero-less car? 14k front 12k rear) - KW V3 - most popular here - Bilstein PSS9/10 - Great quality and like the one on my srt, maybe different model - Zeal Function X (Soft 10k F & R or Hard 12k F & R) can get it for around USD 1800 and pretty reputable company in Japan - but not sure of the drop range and another option has been viable is to have a custom set by MCA, mostly X or red series as my original plan was going to cost over USD 2,200. These what I believe the best options I can find under USD 2500 Researching through forum and google just made me more lost, KW - Bilstein pretty good quality with good prices (cheaper of the rest except tein) but they are more biased toward street as is, Tein is very popular here locally, I didn't find a signle negative review on Zeals but no z34 platform review, lastely, I found mca suggestion here first, searched on web, and got a lot of positive reviews. I want to make one time investment, and some thing time will prove that I made the right choice. Appreciate your inputs
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11-09-2016, 04:58 PM | #2 (permalink) | |
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11-09-2016, 05:01 PM | #3 (permalink) |
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SPL tie rod ends
comes with pillowball joint and also spacers for bumpsteer adjustment i believe are you getting the SPL midlinks to retain the OEM spring setup, or traction rod to go to a true type coilover? for coilovers on the track, Aragosta or AST but on a budget basically everyone loves Charles @ Powertrix since he will build you whatever you want if you ask him. I went with Aragosta but he still helped me sort out some spring issues, very nice guy |
11-09-2016, 05:50 PM | #4 (permalink) | ||
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I would like to stay within $3k for the coilovers. I am not getting into competitions as we don't have much, only trackdays and hopefully autox if we found a sponsor so going over that is not necessary and even what I allocated is a lot, but I like to get quality parts instead of going through multiple cheapo parts. and thank guys for the quick replays.
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11-10-2016, 09:12 AM | #5 (permalink) |
A True Z Fanatic
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You get what you pay for with dampers.
1st JRZ RS1 Coilovers $$$$ 2nd KW V3 3rd Bilstein PSS9/10 And without a shock dyno results handy, adjustable settings are just a mystery box. |
11-10-2016, 11:53 AM | #6 (permalink) |
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Except $3k won't get him into JRZ tho. Possible with AST if he just reuses stock upper mounts.
Zeal is only $2k nowadays? I recalled riding in my mechanic's personal car with Zeal coilovers. It was an eye opening experience for my young self at the time. It was over 10years ago. We had the same make & model car, and his car's behavior over bumpy corners left me a great impression. One minor advice, you may want to consider the availability of rebuild/revalve locally. It's a PITA to have to send the set back overseas for potential service work needed. Small chance, but still should be considered.
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11-10-2016, 02:45 PM | #7 (permalink) |
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Anything from SPL is the way to go. Voodoo 13 is also a brand that is up there with SPL.
I will say V3's aren't good enough for repeated track use from what I have seen. They need a stiffer linear spring rate to be good, and KW will no longer revalve the V3's for a linear spring since the release of their Clubsport line. However, they do not offer a Clubsport for the 370z. JRZ's are out of this world good. MCS would be a good option equal to JRZ, as well as Moton if they offer anything for the 370z. MCA's look good, as well as Stance Pro Comp 2's. Bilstein PSS9/10's are a very recommended coilover in the European car world. The higher level BC Racing coils (DR, HR, ER, ZR) are also very good and may be an option for you to look at. |
11-10-2016, 06:27 PM | #8 (permalink) | |||
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And I am pretty sure we don't have any shops that will rebuild/revalve coilovers. So, which ever is my choice, it will be the same. Quote:
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11-10-2016, 06:31 PM | #9 (permalink) |
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Yes, I remembered something.
What do you think about the spring rates for our cars, I found lot of different setup, like 12k front 11k or 10k rear, and 12k or 10k front and rear, also 14k front 12k rear. Which will be ideal for dual use for a car with no aero parts.
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11-10-2016, 10:41 PM | #10 (permalink) |
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Take a hard look at the Aragostas too, the S or the SS, since they're higher spec internals, aluminum bodies, etc...You can get them in true type or OEM spring location as well as either solid or rubber upper mount. As for ride height, it's one of the few options that'll allow you to go even slightly above stock ride height. The SS is double adjustable and most likely above your price point but I'd get a quote on them regardless. Might be worth it. If I remember correctly, the Z34 Type-S are 14K front, 10K rear and true type. If you do a lot of street driving, I wouldn't go with a spring rate that's any higher.
The KW's are tempting but a PITA to adjust and they don't come with upper mounts, forcing you to reuse the originals. Plus their springs, like the Bilsteins, are progressive.
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11-11-2016, 12:41 AM | #12 (permalink) |
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Yep, I have the Type S as well. Basically all you need to convert is the upper and lower spring mount/collar unit and the spring. If you look at the Infinti HV37 application, it's a true type in the rear. Same basic dampers as the Z34/CKV37 (G37).
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11-11-2016, 01:44 PM | #13 (permalink) |
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I agree that V3s are not your best option for a track purpose. Their main appeal is the daily driving ability as well as a good track setup. But it all depends on how much you're willing to spend overall. The best track coilovers are going to cost a ton at first, as well as in the long run as their internals are amazing, but not meant for daily road use and will wear out faster. Where as the ones made to be more daily driver friendly will last longer between rebuilds, but usually aren't valved as well and won't perform as well as a track shock obviously. Honestly if you want the best, I would save up just a bit more and get some JRZ RS1s. You will be VERY happy that you did.
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11-11-2016, 06:31 PM | #14 (permalink) |
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Well, RS1 is just JRZ's entry level product. They are great indeed, but I wouldn't put that on a pedestal so high as "the best".
Zeal (by Endless) isn't covered much here, IMHO it's probably the best Japanese coilovers (exclude the Euro x Japan collaboration units like Aragostas, or euro coilovers revalved for specific Japanese tunning shops). If OP can get a set of NEW Zeal Function X for $2k, then there isn't really anything to think about IMHO. As far as V3 and Pss10's progressive rear springs, you can always just substitute with a pair of linear units from Hyperco or Swift, you just have to get the right adapter, rate, inner diameter, and length. But extra costs will incur.
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11-11-2016, 10:52 PM | #15 (permalink) |
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Should I overspend? I think overspending will become a hobby for me LOL Ape Factory Interesting thing about Aragostas is their height, found them under $3k mark, however, front 14k is something to think about, if it is bearable as a weekend car I wouldn't care, but does the difference between front and rear rates makes the car understeer more? as I understand harder front springs or softer rear springs will make car understeer, is that correct? Specially that the car stock rates are harder at rear and it is still understeering, maybe the stock alignment is the culprit, I dunno. BuddyH yeah, I was putting V3 and PSS10 to be final resort in my price range as they are reputable companies. As far as JRZ, if any vendor will have a great discount now or during Black Friday, I may consider, maybe if it is 50% discount It is a quality part and I am sure I wouldn't be disappointed if I go for it, and I wouldn't be broke either, I want to stay within current budget as the z is driven one or two days a week cv129 I am digging zeals for now with the seller, I am just trying to confirm the ride height range. There is two options for Function X, Soft and Hard, Soft is 10k spring rate for front and rear, Hard is 12k front and rear. Which one you think will be better? Also, I am trying to get an estimate of Function A coilover, as they are fully made of Aluminum, lighter is better of course but I won't go for A type unless the price turns to be irresistible.
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