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Zeal B6 coilover review (10K/6K)

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Old 06-05-2004, 07:37 PM
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Default zeal b6 (10k/6k) review & some pics too (56k ok)

i'm posting this in hopes of providing a future reference for itr owners who are considering these coilovers.

well, a few weeks ago (see original thread here), i received trey's (Asahi) set of zeal b6 coilovers (10k front, 6k rear). they were in excellent condition. from the condition of the threads, it looks like tennessee has a low salt content unlike the east coast.

thoughts on oem/stock suspension:
i'll start by posting some on my track experience. i've been to a total of 5 track days. 3 days at buttonwillow raceway park and 2 days at streets of willow; both california tracks. both very rewarding tracks. by all means i am a novice/intermediate driver. all days have been on oem/stock suspension. throughout each event, i became more inspired by the suspension. the limits are very high, has enormous ability, and although it has been covered many a time, i can't help but give the suspension a lot of praise. by all means, to those who've never tracked their car and are still on stock oem/suspension, take it out before buying a customizable coilover.

thoughts on zeal b6's:
it's been on for a week so i have yet to use it on the track. maybe a better review will come in the future. all in all, i am impressed by the quality and finish of the suspension. no colorful springs, threads, hats, seats, etc. since the dampers have a lot less miles compared with my stock dampers, i immediately noticed ride improvement. it is noticeably stiffer than stock due to higher spring rates, but not at all unbearable. in fact, at the setting number 3, they are very comfortable. each day, i would bump up the damper to see the effect they would have. setting 4 and above are probably too stiff for my liking and i'll probably leave that for the next track day. the car has less body roll and drives with much more composure.

to those who say "this thread is nothing without pics!", here they are:

you can click each pic for a larger version


front view


rear corner


rear


scenic pic

hope you all like the pics and the mini-review. if you have any comments or suggestions, please let me know. looking forward to maximizing enjoyment out of these. many thanks to yoshi234, mikehonda, and westend alignment.

kepani


Modified by kepani at 8:56 PM 6/5/2004
Old 06-05-2004, 07:39 PM
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Default Re: zeal b6 (kepani)

what are the spring rates?
Old 06-05-2004, 07:40 PM
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Default Re: zeal b6 (kepani)

Lookin' g00d kepani!
Old 06-05-2004, 07:50 PM
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Default Re: zeal b6 (MUTANT X)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MUTANT X &raquo;</TD></TR><TR><TD CLASS="quote">what are the spring rates?</TD></TR></TABLE>

I believe the b6 has a 10k/6k.
Old 06-05-2004, 08:01 PM
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Default Re: zeal b6 (J_D_M_9_4)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MUTANT X &raquo;</TD></TR><TR><TD CLASS="quote">what are the spring rates?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J_D_M_9_4 &raquo;</TD></TR><TR><TD CLASS="quote">I believe the b6 has a 10k/6k.</TD></TR></TABLE>

i have the 10kg/mm & 6kg/mm (front/rear) rates.

for the dc2's they come in either street (10kg/mm front, 6kg/mm rear) or race (12kg/mm, 8kg/mm).

for conversion's sake:
1kg/mm ~ 56lbs./in

10kg/mm ~ 560lbs./in front
6kg/mm ~ 336lbs./in rear

stock itr's are ~246lbs./in front and ~246lbs./in rear (progressive).

kepani


Modified by kepani at 9:11 PM 6/5/2004
Old 06-05-2004, 08:32 PM
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Default Re: zeal b6 (kepani)

Nice pictures, glad to hear your enjoying them

I like to keep mine (b2s not b6s) at 3F and 6R
Old 06-05-2004, 08:44 PM
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Default Re: zeal b6 (Chris93Si)

chris, what spring rates do you have? 10/6? 12/8?

i have yet to bump them to 6. maybe it's just been the roads i have been driving on that made me think setting 5 is harsh. 3f/6r? that's to promote a tad oversteer right?

kepani
Old 06-05-2004, 08:56 PM
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Default Re: zeal b6 (kepani)

now take it to the track...

the linear nature of the springs provides sensations in corners that will put a koolaid smile on your face
Old 06-05-2004, 09:28 PM
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Default Re: zeal b6 (kepani)

Yeah I'm using the 10/6 springs too. If I remember correctly the piston in yours are a little larger than in mine so figure your damper settings are stiffer than mine. Maybe try 3f 5r. But yeah, soften in the front and tighten in the rear for oversteer. Kinda suprising but when I had my car on the skidpad you could really tell a difference when making changes.
Old 06-06-2004, 07:57 AM
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Default Re: zeal b6 (kepani)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kepani &raquo;</TD></TR><TR><TD CLASS="quote">
10kg/mm ~ 560lbs./in front
6kg/mm ~ 336lbs./in rear

stock itr's are ~246lbs./in front and ~246lbs./in rear (progressive).
</TD></TR></TABLE>

Something that I've always wondered- Since the stock ITR rates are the same F/R but the rear's are progressive, what is the closest similar F/R rate ratio using non-progressive springs on both F/R. In this case, with the B6, the F/R ratio is 1.6:1

Anyone know? I've always said that if I replaced my ITR suspension, I would only make it stiffer, but not change the F/R ratio, as that was part of Honda's design. And dare I say, is one of the things that makes owning a car with legendary from-the-factory handling cool. Plus I like the amount of oversteer my car has stock, it's easy to make it step out, and fairly easy to correct if you're careful.
Old 06-06-2004, 08:30 AM
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Default Re: zeal b6 (uncleben)

the low limit of the rears i believe are ~161lbs./in. that would make it a 1.5x:1 f/r ratio. as for what the limit would be for this ratio, i think it will depend on what you prefer and your driving style.

from what i gather this is the general rule:
front rate &gt; rear rate --&gt; understeer
front rate &lt; rear rate --&gt; oversteer

however, there are other factors that come into play such as relative tire pressures, front/rear sway bars, your weight distribtution, etc.

some people on this board have rear rates higher than the front. that may be due to their different habits/styles on the courses or streets. however, i feel similarly to how you feel; i wanted to maintain somewhat of a consistency with what honda had in mind when they designed the stock suspension. a 1.6:1 f/r ratio is very close.

kepani
Old 06-06-2004, 08:42 AM
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Default Re: zeal b6 (kepani)

kepani,

i was about to bring up this discussion til i saw you post about it

stock honda spring rates is around 1:1, the rear being progressive, (and if you take that into mind), around 1.25:1 (front 240, rear 180-240).

the first difference that comes to mind is that, alot of aftermarket suspensions come with linear rates. This in itself i believe makes a difference in the handling characteristics of the car.

next, the itr is a FF car. a great portion of the weight is in the frontal half.

now by no means am i even close to being a half *** decent driver on the track, but from my experience on the oem suspension as well as a stock shock/hr spring suspension, (chosen because the spring rate ratio is approx the same, and also progressive) the itr plows moderately into a corner.

with a completely stock itr suspension, anyone reading this thread who wants to swap out their stock spring/shocks, i would not recommend going with a heavier front rate, as kepani mentions. the stock suspension already dials in quite a bit of understeer (how most US cars come from factory), and increasing the ratio in the front just will exhasterbate the situation.

now if you have a thick *** rear sway bar, and much like how other people in japan liked to setup their vehicles (sway dial in oversteer, add more understeer with spring rate, good combination) a jdm suspension (like zeal) may work wonders for you.

this is why the stock itr suspension is great on its own, not because of the shock/suspension, but the chasis and the combination of the rear sway (its not as "thick" as the jdm counterpart)

as anyone else will mention, before you swap out the stock suspension, track it a bit, if you like the handling characteristic, then you know what you are looking for.

for me, ive been on the track a few times, and the stock suspension dials in slightly too much understeer, and i'd like to see more oversteer dialed in. whether that indicates i should go with a linear spring in the rear, and a jdm rear sway and that will do it for me, i'm not sure. or if i need to purchase a spring setup that will give me a heavier rear bias, thats another question.

pick your poison

edit: oh yeah, as kepani mentions below, the dampening rate can also affect the suspension, almost forgot to mention this point
Old 06-06-2004, 08:42 AM
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Default Re: zeal b6 (BlueR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueR &raquo;</TD></TR><TR><TD CLASS="quote">now take it to the track...

the linear nature of the springs provides sensations in corners that will put a koolaid smile on your face </TD></TR></TABLE>

can't wait to test it out on da track! ...does it make it more predicatable with it being linear? sounds like that is the reason. with progressive, i'd think because of the varying rate, the feel is hard to predict?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris93Si &raquo;</TD></TR><TR><TD CLASS="quote">Maybe try 3f 5r. But yeah, soften in the front and tighten in the rear for oversteer. Kinda suprising but when I had my car on the skidpad you could really tell a difference when making changes.</TD></TR></TABLE>

thanks for the tip! i'll try this. and as for each adjustment, whoa you can really tell. each setting is noticable.

kepani
Old 06-06-2004, 01:26 PM
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nice drop man...was thinking of getting those coilovers =P

sent ya a PM...

Old 06-06-2004, 01:35 PM
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Default Re: (IntegraXTR)

Congrats, cant wait to hear a review after a track event
Old 06-07-2004, 09:31 AM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98itR484 &raquo;</TD></TR><TR><TD CLASS="quote">Congrats, cant wait to hear a review after a track event
</TD></TR></TABLE>

yeah, i can't wait either!

also waiting for a 26mm rear sway to spice things up.

kepani
Old 06-07-2004, 09:44 AM
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Default Re: (kepani)

I had a ?.

On the Zeals can you adjust compression/rebound independant of each other, or are they tied together.

I had a chart once that showed the behavior of the car on entry/exit (ie understeer/oversteer) and what was need to correct it in terms of compression or rebound. The thing that I always remember was compression and rebound had 2 different effects on the car, ie adjusting them together won't really solve much..(btw if anyone has the chart please drop me an IM)

regardless, everyone who picks up the Zeal setup seems to praise them. so they must be doing something right.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kepani &raquo;</TD></TR><TR><TD CLASS="quote">

yeah, i can't wait either!

also waiting for a 26mm rear sway to spice things up.

kepani</TD></TR></TABLE>

Also why not just buy a heavier weighted rear setup, and bypass buying another sway?

It would seem as if front bias setup+thicker rear sway=rear bias spring setup.
Old 06-07-2004, 02:48 PM
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Default Re: (DsR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DsR &raquo;</TD></TR><TR><TD CLASS="quote">On the Zeals can you adjust compression/rebound independent of each other, or are they tied together.

Also why not just buy a heavier weighted rear setup, and bypass buying another sway?

It would seem as if front bias setup+thicker rear sway=rear bias spring setup. </TD></TR></TABLE>

the zeals compression and rebound are tied together. the only coilover setup i'm aware of that has independent adjustment are tein's (not sure which model).

as for getting a stiffer rear spring rate in lieu of soft springs and stiffer rear sway, i wanted to maintain some level of comfort, yet have the "luxury" of having a stiff rear sway for good turn in. am i making an incorrect analysis of this? but yeah dsr, that's what i'm trying to do.

kepani-who wonders what the other coilover owners think...


Modified by kepani at 7:07 AM 6/9/2004
Old 06-07-2004, 03:11 PM
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Default Re: (kepani)

&lt;--- Wishes I could afford those bad boyz
Old 06-07-2004, 04:39 PM
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Default Re: zeal b6 (kepani)

how come i dont see any pictures ?&gt;
Old 06-07-2004, 10:12 PM
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Default Re: zeal b6 (kepani)

Looks ono bra!
Old 06-08-2004, 05:27 AM
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Great Stuff kepani!!
I pick mine B6's up tomorrow :D

It's funny, it looks like i have the exact same set up as you. Good taste mate! Are those Volks 17's? Im worried my 16's will look small. Let me know yeah?

In respect to the suspension. How did you guys decide on a height? or did you use the factory settings?

As a matter of interest, has anyone here corner weighted their setup? What's your opinion in terms of changes in corner weight?
Did you keep it to the stock 63:37?

Keep this thread alive with a review from the track and any adjustments logs!! :thumbsup:
Old 06-08-2004, 11:52 AM
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Default Re: (euG3dc2r)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by euG3dc2r &raquo;</TD></TR><TR><TD CLASS="quote">
How did you guys decide on a height? or did you use the factory settings?

As a matter of interest, has anyone here corner weighted their setup? What's your opinion in terms of changes in corner weight?
Did you keep it to the stock 63:37?
</TD></TR></TABLE>

i never measured how much of a drop i had. but i estimate about 5/8th of an inch.

i was also able to have the car cornerweighted. probably something most people know (i just learned this not too long ago ) about cornerweighting is that they balance the weight of the car in the diagonals. this is done by adjusting each individual coilover height to distribute weight to another wheel.

specs:
car + me + empty gas tank = 2646lbs.
left to right distribution = 51.5%left/48.5%right
diagonal distribution = 50%/50%

i have the weights at each tire on a sheet of paper at home that the balancer gave me and i'll post them here just in case anyone else might be interested.

kepani
Old 06-08-2004, 12:00 PM
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Default Re: (euG3dc2r)

Suspension: Zeal Function B6 (custom valved)
Springs: Swift 8f/12r
Swaybars: stock/27mm adjustable

Shock settings:
1/1 Street
2/6 Autocross (Varies depending on surface conditions)
5/5 Track

Ride height:
~5" from jack points (street)
~3.5" from jack points(Autocross) Limited by tie rod/frame clearance.

Car weight: 2475lb (63%/37%)
Old 06-08-2004, 12:04 PM
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Default Re: (kepani)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kepani &raquo;</TD></TR><TR><TD CLASS="quote">

the zeals compression and rebound are tied together. the only coilover setup i'm aware of that has independant adjustment are tein's (not sure which model).

as for getting a siffer rear spring rate in lieu of soft springs and stiffer rear sway, i wanted to maintain some level of comfort, yet have the "luxury" of having a stiff rear sway for good turn in. am i making an incorrect analysis of this? but yeah dsr, that's what i'm trying to do.

kepani-who wonders what the other coilover owners think...</TD></TR></TABLE>

makes sense.. since the rear is substantially lighter it does ride fairly rough w/a heavier rate.

my setup is only slightly heavier in the rear (350/400) so my car tends to be very neutral w/a slight oversteer @the limit.

Let us know how it works out w/the sway as well


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