I tried reading up on both of these systems at several sites but they only had the generic Zeal descriptive jargon of the 2 systems.

I do know that the V6 are 6 way adjustable and the Function-X is 30 way adjustable.

Does anyone know what the other differences are?

I was thinking about the Zeal Function V6 with Swift springs... should I consider the Function-X ?

any help would be appreciated.

thx!

 

Here are the descriptions from the endless site.... not that this really means anything to me....

ZEAL Function-X Coilover
For the next generation hard user, we’ve developed the Function-X Series. The Function-X is now born. With advanced damping capabilities in effect, our efforts have recently focused towards our new “X-Coil Hyper Spring”. Through consistent and progressive research and experience, we’ve improved spring quality to achieve an even smoother and more responsive feel and ride. The ability to grasp precise road data has improved. The X-Coil spring achieves exactly this. Our Dynamometer Data proves this with stable rebound and compression levels (within a 0.1 Meter Per Second range) for level travel at very low speeds, very high speeds, and everything in between. By keeping very detailed, precision spring motion in mind, we are able to set the shock’s piston valving to superior levels. The combination of the shock and spring is superior. Our Linear Spring Motion with no Friction Loss is superior and the shock can be adjusted very precisely (Function-X includes 30-Way Damping Adjustability), thus the setting levels have broadened and can be fine-tuned with advanced precision and feel. Lightweight aluminum upper mounts, spring seat preload and spring seat locks, height-adjustable lower brackets and lock seats (for non-strut type applications) include a durable, Alumite finish for rust proof characteristics. Steel shell casing includes a special plating for rust proof characteristics also. Adjustable brackets are newly designed and slender. Driving feel is amazing for the hard-user. MacPherson Strut-Type systems are specifically produced as an inverted-monotube type.

ZEAL Function-V6 Swift Coilover
This steel-type, inverted-monotube type shock absorber is produced for specific vehicles with strut-type suspension. The shock absorber for this type of set up takes great abuse, thus side load attributes must be strengthened. An inverted monotube with a Friction-Loss Cylinder was developed for this matter. While using the Function Series' technology, we've produced the new Zeal model for high performance driving. The nitrogen gas camber is positioned higher up and farther away from the braking area creating less heat transfer and thus, less chance for overheating. Also, under-spring weight is now lighter enabling handling to become sharper, quicker, and more responsive. Our easy-to-read and use, 6-Way Piston Valve Shock (PVS) Dial mechanism adjusts the rebound/compression force with its Piston Valve Shock Technology, Level 1 being the softest and Level 6 being the stiffest. Dial can be turned either direction infinitely. Pillow Ball camber adjustable upper mounts for direct feel of suspension motion help to decrease piston rod tension. ID60 SWIFT (Read about the difference between BASIC vs. SWIFT springs in our FAQ section) Spring (Street or Hard rates) maintains stroke and ensures a "seated" fit with upper and lower portions processed to a flat cut. The Adjustable Shock-Stroke System is a separate, adjustable lower cup/bracket used for height adjustability which eliminates problem of sacrificing stroke and altering spring tension. Spin the mechanism over the threaded shock casing up to lower (and down to raise) vehicle height. All Zeal Function Series systems include this height-adjustable system.

 

Something I found on Zeal site:

Q: Which coilover do you recommend for "street-type" driving environments?

Because street/road conditions (especially in the US) are quite harsh, we recommend systems that include a steel-based shell casing, namely the Function-Xs, Function-B6 and Function-V6. We recommend the Function-X as well as aluminum-based shell casing systems (ie., Function-S6, Super Function, Super Function-R, etc.) mainly for smooth-surface, track/circuit usage.

 

More:


Q: What is the difference between the BASIC and SWIFT spring?

With the exception of the Function X-Series Coilovers, ZEAL uses BASIC & SWIFT, original springs manufactured by the same company, a very reputable spring manufacturer in Japan. The main difference lies within the material blend.
The SWIFT spring uses a "softer" material and although the lengths between the SWIFT and BASIC spring may be equal between applications, when "stretched out", the SWIFT is shorter with more coil gap and less coil bind.
On the flipside, the BASIC spring has less coil gap and a somewhat longer life span due to its more "harder" blend of material.


Q: What is the X-Coil Hyper Spring?

The X-Coil Hyper Spring is our new linear spring used in conjunction with the ZEAL Function-X and Xs coilover systems. This thicker, yellow spring uses material that allows for no distortion at extreme expansion or contraction. Motion and response is exceptionally stable within all ranges with no friction loss and no coil bind achieved through advanced manufacturing capabilities. Driving feel is extremely smooth with no residual bounce, especially during high speeds. This spring enables a certain “sticking to the road.” The Hyper Spring X-Coil is available in both ID60 and ID65.


Q: Do you recommend the BASIC, SWIFT, or X-Coil spring for my coilover?

We recommend BASIC for street-type and SWIFT for circuit-type driving.
The BASIC spring, with more coils, will be more "giving" in harsher, road conditions.
The SWIFT is more responsive and superior in handling compared to the BASIC spring, thus is recommended for smooth-surface, track/circuit conditions. The SWIFT spring will have less of a cushion-type of feeling for harsher, bumpier, street-type conditions (especially in the US where road conditions are generally harsher as compared to Japan). However, we will begin to greatly focus on the X-Coil as results show that this spring is by far the most superior in terms of performance and life.

 

If the car is a daily driver go with the V6. The V6 will deliver better handling and a better ride than the stock KYBs. You’ll be able to set ride height the way you want and maintain full shock travel.

If you plan on racing, either autox, rallyx or track days go with the FunctionX. It really depends on how much performance you want to add and how hard you intend on driving your car. All we do is race so the FunctionX was our starting point. The set-up has proven to be better than promised.

Give WORKS a call and talk to Pete; he can help with the spring selection for your particular needs.

 

The Function Xs is a killer setup for a street car that sees some track/autocross use..the span of adjustment (dampening) is truly amazing


adam

 

great. thx for the feedback.

my car is a daily driver that will see 2 track events a month. I drive my car very HARD at the track.

Looks like 'Function-X' is the way to go.

tia....

 

We have sold many sets of V6 coilovers and have only had positive feedback. The Swift spring option is great. Lightweight high quality steel, is great for maintaining the spring rate over a longer period of time. Your options later for changing spring rates will be greater also.


Nils, let me know if you have any questions. I am at the track today, but I have my cell phone with me.

Myles Williams
www.racecompengineering.com

sales@racecompengineering.com

Racecomp Engineering LLC.
9123 Old Annapolis Rd Suite 103w
Columbia, Maryland 21044

410-730-RACE
410-730-5503 FAX
410-707-0108 mobile.

 

Rick pretty much sums it up. The Function-V6 is a great all-around performer. Good on both the street and track. If you're leaning more towards the track aspect, then the Function-X would be a better choice as these offer more adjustment and are more aggressively valved. Spring rate is generally higher with the Function-X, but WORKS can also setup the Function-V6 with custom spring rates as well. Feel free to contact us if you would like to discuss these options

 

So when's the next time you guys are going to have a sale on these bad boys Jamie?

 

Upon further research looks like these might be the ticket now....

 

Those things look nice! Even the reservior has an adjustable perch! haha..

What are the advantages of having a remote reservior anyway?

 

remote resevoir leads to more efficient cooling of the shock fluid. Function R are very nice, great track units, special order and VERY expensive

 

So do remote reservior shocks require more maintenance? Or is it mainly because remote reservior shocks are built for racing applications that they require more maintenance?

 

We ran remote resevoir coilovers (JRZ) on the E46 World Challenge car and did not have any more maintenance, though I have never seen it used on a street car as it would surely not be needed - especially considering they are around 1/6 the price of the car )