how much bar is to much bar? |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
how much bar is to much bar? |
ottox914 |
Oct 26 2004, 04:37 PM
Post
#1
|
The glory that once was. Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest |
I 'll first describe how the '14 is set up, then what I'm thinking and why, then you guys take it from there: Front: 21mm front T bars, 19mm weltmeister sway bar, set about 1/4 in from full soft, koni oil (911) sport adjustables in shortened housings, usually run at 1/2 turn in from full soft. Allignment as much neg as I can get, which is about 1 1/2 per side, 1/8 total toe out, caster at high end of factory specs. Back: Koni gas sports, (914), run full soft, 175# springs, threaded adjusters, no rear sway bar, no toe and no neg camber. Koni competition bump stops all the way around. Stock 15 x 5.5 rims w/Azenis, going to kuhmo or hoosier for next season, on either factory rims or 6.0 panasports. Rack spacers up front. Lowered to about 2-2.5" of travel for front struts before hitting the bump stops, back end lowered to corner balance to 49/51 diagonals. Open diff. 2.0 motor, soon to be kitcarlson'd, kerry hunter header w/supertrapp, "custom" (home-made) cold air kit, basically a K & N mounted on some pvc on top of the throttle body that sits right under the engine lid mesh w/the rain tray out.
I like the way it handles, in specific, the throttle lift oversteer at higher speeds to rotate around a cone. The car will be DSP for next season. Don't like the body roll. I think from seeing photos there is too much. Plan of attack? I have always thought getting spring rates right was the first step, then sort the F/R balance with the sway bars, and fine tune at the track with shocks and air pressures, in that order. Here's what I'm thinking- go to the 23mm front sway bar, adjustable drop links to make sure there is no pre-load, add the (?) 18mm rear adjustable bar. Increase both bars a similar amount to try to retain the front/rear balance, and hopefully lose some body roll in the deal. Maybe go back to the 150# springs sitting in the garage. Use is auto x, no lapping or road course stuff. (yet) So, how about it? Anyone been there/done that? Most of the folks I've talked to locally stay away from a rear bar. I like the F/R balance the car currently has, and know how to fine tune it w/shocks/tire pressures for the conditions of the day. When I have tried to tighten up on the front bar, it just seems to become a pushing machine, and with the shocks set other than noted, it rides like a dump truck. Just gotta get rid of some roll, or just get used to it. waddya all think? |
J P Stein |
Oct 27 2004, 02:01 AM
Post
#2
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
I've learned some stuff about suspension for AX in the last few years..... mostly by finding out "oops, that didn't work" and as you go faster stuff that you thought worked just fine no longer cuts it.
Mostly I've been playing catch up with grippier tires.....hay, you start going faster (seat time helps too) revealing handling quirks that you didn't know you had (IMG:style_emoticons/default/confused24.gif) One of the few "fer sures": If you're set at full soft on your front AR bar & you're still pushing, you've got a problem. (Unless you have one end or the other breaking loose consistently, you ain't going fast enuff.) The "no rear AR bar to keep the back inside wheel on the ground" ditty works till it don't no more. Mines on the ground but leaves a long black streak around some corners.If your have more tire than power, this won't be a problem tho.....or you ain't going fast enuff. An aside: I drove Jim Chamber's car at the last AX. Seemed well balanced on the first run as I was feeling it out. Pushing it some an the next run revealed a oops. He has a rear AR bar. In a sweeper, power on....nice drift....picked up the inside rear tiar...speed fell off, got lotso grip, dipsy doodle readjustment of line....lost momentum....prolly lost a second right there. Now he has a challenge. So..... I what to do with my problem? Get an L$D?....ouch! Being a CSBO sux. . Stiffer rear springs.....this I will try a set of 275s & 300s one of em' ought to be about right....I can always stiffen the front AR bar iff'n it goes loose. More tiar....sure, why not. I can go to monster meats in my class....getting fender over em' is gonna keep that down a bit tho. BTW, Bob, progressive springs will really screw up an AX car's handling....if you're going fast enuff. (IMG:style_emoticons/default/biggrin.gif) BTW II, what's happening with the ALL 914 AX? March sux for me. I won't time to set a handle on my new set-up. I'd hate to come down there & stink up the joint. (IMG:style_emoticons/default/laugh.gif) |
Lo-Fi Version | Time is now: 1st June 2024 - 11:39 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |