Yellow Speed Racing coilovers

[Jimi]

I'm interested in people's experiance with 8kg/6kg in NA/NB to confirm or argue against the discussion in the linked thread. It is possible, for instance, that when YSR say 8/6 there might be some rounding involved and it's more of a 8.3/5.5 ratio (measuring in whole kg is a bit odd really).

Anyway, I'd just like to hear about the balance of the car from these YSR owners with NA or NB and the '8kg/6kg' springs when used on a track/hill climb.

I can honestly say your alignment plays a far greater role in balance than subtle differences in spring rate ratios. I currently run max rear camber that stock suspension allows, and -0.5' front, with full forward caster @ front. Standard sways, and yellowspeed Sports.

With this in mind, I get very neutral handling at speed, with a slight tendency to understeer (this is the opposite effect to the increased rear spring ratio suggested in the linked thread) at lower speed corners (i.e. 1st gear before you hit the power), or in rough/choppy turns. In all turns the car balances well using throttle and brake/trailing throttle, so I wouldn't change my camber settings at all.

I suspect that swaybars will play more of a role in balance than the spring rates do, since you're limiting the grip of the inside wheels more when running stiffer sways, but on standard sways, it is VERY well balanced.

Just my 2c as an owner of the yellows after owning them a while.

[aka_juffa]

Hey all. Well you can add me to the YSR owners club I just fitted a 2nd hand set of Dynamic Pro Sports to my NA8.

The previous owner had fitted them to his Girl Friends MX-5....she was not happy. Too hard for her I guess.

I found that I had to raise the rear spring perch height to provide more bumpstop clearance for road use. In the short distance/time I've had them I am quite happy. Very similar ride/feel to the Tein Flex that I had on my previous NA6 (Tweety).

J.

[wiztek]

Hi all
Is fitment of these coilovers on a NB8A a straight forward process? Ive read about the long bolt method, but i cant find a good guide on the web anywhere.

[rossint]

See also http://www.miata.net/garage/miatafrontsuspension.html

This is the "Long-bolt" method which I used. Unfortunately there is no picture of this long bolt in Step 8 of the site above but it's obvious since its under the from wheel arch at the top.

Regarding this step:

8. Remove the upper control arm bolt. This is a really long bolt that connects your upper control arm to the frame. You will need a 21 mm socket and a 21 mm wrench to complete this task. Once you have the nut off, you can push the LONG bolt out of the upper control arm and frame. If the LONG bolt appears to be stuck and does not want to come out, refer back to step 6. Many times, the sway bar bolts just need to be backed out a little farther

You slide the long bolt foward (to front of the car). On the passenger side, my long bolt was stuck fast and I ended up using steel rod inserts and a rubber hammer to knock it through. The driver's side slid out easily. I should have referred to the comment in "Step 6".

There you go.

[Kerelm]

anyone got pics of examples of how low these can go on NA6?

[miatas76]

anyone got pics of examples of how low these can go on NA6?

They can go pretty low.... Depends on how low u want really...

ImageUploadedByTapatalk1348478761.021434.jpg

[aviper4u]

Hi all
Is fitment of these coilovers on a NB8A a straight forward process? Ive read about the long bolt method, but i cant find a good guide on the web anywhere.

mate if your in Sydney happy to give you a few pointers just through some YSR coilies on my baby bout a month ago.

[vrmmmpshhh]

what are the NA guys setting the damping at? i have mine at f25r15

[rossint]

Street 15F 15R Track 28F 26R

[vrmmmpshhh]

Thanks, I knew I had it over dampened. What would you guys recommend for hill runs?

[nGtim]

Finally got my YSP dynamic pro's in for about 2-3 weeks now.
Pretty happy with the build quality.
However found that they do not go low enough on the rear for my application.
(yet to see how they look like by loosening the captivity of the springs.
I'm contemplating letting the springs loose and going lower.
Has anyone done the above ^ and what are their experiences?

[ja9]

I have and for me it's not a problem. I did buy some helper springs to keep the springs captive when going low but haven't needed to use them. Eventually I'll probably chuck them in now that I've bought them. If you're worried just be careful when jacking the car up and bringing it back down to make sure it sits in its spot properly. Better still, buy yourself some helper springs.

- John

[project.r.racing]

there is no need for helper springs. you do not adjust height at the spring perch, so the should be captive all the time.

[BecauseRacecar]

Im the same, i have just installed them on my nc2, and would like to go lower, where did you buy your helper springs? As im worried about springs being loose.

[aurnob]

Has anyone bothered to modify the bumpstops in these coilovers or inspect what type of bumpstops are used.

Contemplating getting FCM bumpstops for these coils.