HHP Adjustable Sway Bars Now Available for the 1988 Suspension (Page 6/10)
rourke_87_T-Top JUL 20, 11:26 PM
Has anyone done a mixed set up yet, using 88 cradle on 84-87 car ?
R Runner AUG 30, 08:52 PM

quote
Originally posted by rourke_87_T-Top:

Has anyone done a mixed set up yet, using 88 cradle on 84-87 car ?



Sorry.... I must hae missed this one. The post is over 1 month old! My bad.

rourke_87_T-Top.......

I hae not had a customer do this yet. I have done the calculations and it seems like it would be a real sweet setup, but again, not yet.
R Runner DEC 04, 12:46 PM
These kits are still available for those who are interested.

------------------
Paul

My IMSA Build: http://www.cardomain.com/ride/789315
HHP Adjustable Sway Bars: http://www.fiero.nl/forum/Forum4/HTML/036556.html

katore8105 DEC 30, 11:05 PM
An 88 GT is next on my list. I might give you a shout then.
Bloozberry DEC 31, 06:33 PM
I'm interested in getting more information about your '88 front bar. I'm building an '88 with Held Motorsports 6" track width increase (3" per side) front and rear. Since I'm planning to use the car strictly on the street, I'm using the stock rear sway bar on upper knuckle adapters, but I've found nothing so far to allow me to install a front swaybar. On the front, I also have Held's 1.5" drop spindles. It looks pretty straight forward with your design to be able to offer a sway bar for any track width. (I understand the longer the bar, the lower the spring rate for otherwise similar bars, so I also understand that your graphs below won't reflect the exact performance of a custom length bar, but that's OK). I would be interested in knowing whether you can offer a longer bar, whether you think the drop spindles will interfere, and whether you believe the adjustability of your current sway bar ends is sufficient to accommodate a balanced car given that the stock rear bar's effectiveness is somewhat reduced due to the longer rear control arms leverage. Of course, I'd like to know what the additional cost for a longer bar would be as well.
R Runner JAN 01, 08:38 PM

quote
Originally posted by Bloozberry:

I'm interested in getting more information about your '88 front bar. I'm building an '88 with Held Motorsports 6" track width increase (3" per side) front and rear. Since I'm planning to use the car strictly on the street, I'm using the stock rear sway bar on upper knuckle adapters, but I've found nothing so far to allow me to install a front swaybar. On the front, I also have Held's 1.5" drop spindles. It looks pretty straight forward with your design to be able to offer a sway bar for any track width. (I understand the longer the bar, the lower the spring rate for otherwise similar bars, so I also understand that your graphs below won't reflect the exact performance of a custom length bar, but that's OK). I would be interested in knowing whether you can offer a longer bar, whether you think the drop spindles will interfere, and whether you believe the adjustability of your current sway bar ends is sufficient to accommodate a balanced car given that the stock rear bar's effectiveness is somewhat reduced due to the longer rear control arms leverage. Of course, I'd like to know what the additional cost for a longer bar would be as well.



Dave.... thanks for the PM Lots of good questions.

Longer bar - You are correct in your assumption that the bar can be made longer and the spring rate change that will result. Currently my front bar for the '88 is 37.5" long. I believe that I can get a 43.5" bar made but the maximum "non-custom" (ie no additional charge) is 42". Therefore if I can have one made there will be an additonal charge of $46. I am 95% confident that this is possible.
.
Drop spindles - Does the drop spindle work with a stock sway bar? Also, if you send me an email address, I will be happy to send you a full installation procedure so you can evaluate the potential fit concerns. I have never installed one of the held suspensions before, but I have had customers with them. As I recall, the end links need to be changed. Also it is worth noteing the size and rim offset. Sometimes turning the wheels to the lock and cause an interference.
.
Car balance - That is a tough one. With the additional swing arm distance added to your rear while maintaining the same swaybar, you have (and you mentioned it) effectively decreased the ability of your sway bar to counter act the input at the wheel. To get a rough idea of how much you changed it, picture the lower swing arm that extends cross car from the cradle. Measure the distance from the piviot point to the applied force (for this case you can use the outer arm piviot point) and from the piviot point to the center of the tire in the stock position. Next determine a ratio:

(Length of cross car lower arm) / (Piviot on cradle to center of force from the tire in the STOCK location ) = Ratio 1
.
(Length of cross car lower arm) / (Piviot on cradle to center of force from the tire in the NEW location ) = Ratio 2
.
Ratio 1 / Ratio 2 = The factor you have decreased your sway bar rate.
.
Please note that these are approximations.

The rear of the '88 only had an 85 lb @ 5 degrees of twist capibility anyway. So I figure you will be in the 60 lb range. That is pretty light. Any bar I offer up front will most likely be in the 100 lb to 140 lb range (nominal). The adjustment of the front bar is minimal compared to the adjustment of the rear bar I offer for the '88. So..... Although I am not certain about the outcome, I believe that the front bar will still over power the rear causing the car to push and the adjustment in my front kit will not be enough to compensate for the difference.

I hope that answers your questions.
Steve25 MAR 20, 09:28 PM
Does anyone have pix of a rear bar installed?

If a pre 88 rear bar would look similar that would be helpful.

Thanks,

Steve

------------------
Steve AT 88GTP DOT com
88 GT\3800 SC\4T65E-HD

88 Racer MAR 23, 05:54 PM
I race an 88 SE at Road Atlanta, and I installed a set last spring. They are fantastic. I was able to take 8 seconds off my lap time the first day. The race car is lowered, and fitted with coil-over Konis on all four corners. At R.A. turn 12 follows a blind up hill turn at the top. Into a down hill kink entering turn 12. Prior to installing HPP sway bars I had to brake before actually entering turn 12. After installing and tuning the competition bars I now put the peddle on the floor at the top of the hill and leave it there until entering turn 1.

The car does a beautiful four wheel slide going through 12. Drifting out to the edge of the track then catching as I slowly unload the steering

The difference is like night and day.

Chuck
88 Racer MAR 23, 05:55 PM
I race an 88 SE at Road Atlanta, and I installed a set last spring. They are fantastic. I was able to take 8 seconds off my lap time the first day. The race car is lowered, and fitted with coil-over Konis on all four corners. At R.A. turn 12 follows a blind up hill turn at the top. Into a down hill kink entering turn 12. Prior to installing HPP sway bars I had to brake before actually entering turn 12. After installing and tuning the competition bars I now put the peddle on the floor at the top of the hill and leave it there until entering turn 1.

The car does a beautiful four wheel slide going through 12. Drifting out to the edge of the track then catching as I slowly unload the steering wheel.

The difference is like night and day.

Chuck
joeformula88 MAR 25, 10:59 AM
88 Racer:

I'm very interested in a set and already hooked up with Paul.
Can you share if you encountered any clearance issues, both front and back, since you lowered your suspension?
Thanks!