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> Suspension Tuning Setup Advice Needed..., went from a swinger to a plow...
cha914
post Dec 8 2003, 02:02 PM
Post #1


MUSR 8 - 5lug conversion done wed - drive 500miles thrus
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Member No.: 63



Ok, did the first autox with the new suspension on sunday, and I wasn't overly impressed with the results, but since I changed almost everything, I cant realy expect to have it right the first time.

So here goes, the car had very sluggish turn-in responce, and wanted to plow through every corner. I really couldn't even get it to rotate under trail braking. Here is the setup:

Koni Yellows all around
Poly bushings all around
Fully adj rear perches w/175lb springs
22mm solid torsion bars
22mm weltmeister front bar set full soft

Ride height = 4.75 up front and ~5.25 rear (measured to the donuts)
Camber = -1.5 up front -2 rear
Toe = 1/16th toe OUT up front and 1/16th toe IN rear

With the Koni's set to full hard the car seemed to improve a little, but not much. Also, the course was on a fairly slick parking lot, and I am running 2year old pirelli tires (205/50/15s with plenty of tread, just hard).

Finally, I want this car setup mostly for track driving, so I know autox performance is going to suffer some, but it seemed pretty poor overall yesterday (it was definately more fun with the ass up in the air sliding everywhere (IMG:style_emoticons/default/tongue.gif) now I want it to be fast)

Any suggestions on where to go from here, or what to try in the future (I know I need better tires).

Tony (IMG:style_emoticons/default/smash.gif)
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cha914
post Dec 9 2003, 08:54 AM
Post #2


MUSR 8 - 5lug conversion done wed - drive 500miles thrus
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Group: Members
Posts: 739
Joined: 31-December 02
From: Austin, TX
Member No.: 63



Thanks for all the replys guys! To answer a few questions: No LSD (I want one, but now your talking Big $$$), No rear bar, I bought the 22mm bars long before I knew any better and decided to throw them in to see what happened, the car came with the 22mm welt sway bar so I kept it, I put on the new rear springs and all the shocks and bushings.

I didn't mess with tire pressures at the event cause as was stated earlier "they are slicker than snot on a door knob" and I wanted to play with the koni's and not the tires.

My first few runs I ran with the koni's full soft, just to get a baseline, then I ran them full hard and got my best time of the day. Then I tried running the front full soft and the rear hard, and I thought the car felt squirly, but its probably just my driving. After watching the fast cars, I think I was over driving the course for the most part, definately over driving the limits of the crappy tires.

I realy want the car to be setup for the road course, Autox is fun, but the local club still doesn't have a good lot and their organization sucks...and driving 1-2 hours for 10min of seat time isn't my idea of a great ratio. I have to drive at least that or more to get to a track, but at least I will get a few hours of time.

Anyway, I will put those tires on the christmas list, and after I get those I will look into bigger springs and/or smaller torsions and/or a rear bar ... and hopefully by the end of next year, I can afford some of mullers rollerbearings (IMG:style_emoticons/default/beer.gif)

Thanks again,

Tony
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cha914   Suspension Tuning Setup Advice Needed...   Dec 8 2003, 02:02 PM
ChrisReale   You might need heaver rear springs. Also, many pe...   Dec 8 2003, 02:18 PM
synthesisdv   I agree with chris about more camber up front but ...   Dec 8 2003, 02:41 PM
john rogers   I'd say it is the tires and a pretty good lack...   Dec 8 2003, 02:46 PM
J P Stein   I'm with stupid...er, Chris. Better tires will...   Dec 8 2003, 03:21 PM
cha914   *sigh* yeah, I need tires, but I have already bou...   Dec 8 2003, 04:24 PM
MJHanna     Dec 8 2003, 05:37 PM
cha914   Here are a few shots of the car in action...somebo...   Dec 8 2003, 09:31 PM
cha914   lifting the inside front?   Dec 8 2003, 09:32 PM
cha914   turn damit...turn ...   Dec 8 2003, 09:33 PM
cha914   I guess I will leave it as is for now, and get som...   Dec 8 2003, 09:38 PM
DuckRyder   Does it have a rear bar? For Autocross I think it...   Dec 8 2003, 09:41 PM
cha914   Nope, no rear bar...I think I have actually heard ...   Dec 8 2003, 10:49 PM
ChrisReale   :barf: .....you need more rear spring.......... :b...   Dec 8 2003, 11:21 PM
SirAndy   front is loose, tighten the back back is loose, ti...   Dec 8 2003, 11:40 PM
J P Stein   Heavier rear springs keeps the inside front wheel ...   Dec 8 2003, 11:53 PM
SirAndy   ...   Dec 8 2003, 11:58 PM
fiid   I was also told that a rear bar was good for getti...   Dec 9 2003, 12:39 AM
Brett W   With 22mm bars up front you need to be running at ...   Dec 9 2003, 01:11 AM
J P Stein   Come to think of it......... I encourage you all n...   Dec 9 2003, 01:57 AM
DuckRyder   The disclaimer is that this is non-914 specific ex...   Dec 9 2003, 06:31 AM
MJHanna   I run 200lbs springs on the rear with 21mm bars. D...   Dec 9 2003, 07:00 AM
Eric_Shea   So, as the concensous shows... you either went too...   Dec 9 2003, 08:03 AM
cha914   Thanks for all the replys guys! To answer a f...   Dec 9 2003, 08:54 AM
DuckRyder   To add insult to injury, you really need two sets ...   Dec 9 2003, 11:39 AM
Brad Roberts   The guy has Empi 8 spokes. This means the largest ...   Dec 10 2003, 01:48 AM
J P Stein  
QUOTE
  Dec 10 2003, 12:34 PM
Brad Roberts   Sorry, straight off the plane. Should'nt have ...   Dec 10 2003, 12:38 PM
Eric_Shea   Awwwwwwwwe... :wub: How can ya stay mad at him?...   Dec 10 2003, 12:45 PM
Brad Roberts   I thought I was "done" being pissed off at life. S...   Dec 10 2003, 12:50 PM
maf914   Hey, nobody suggested a set of Mueller's beari...   Dec 10 2003, 01:00 PM
Eric_Shea   Mueller's bearings aren't worth SHIT until...   Dec 10 2003, 01:28 PM
Brad Roberts   Yeah.. the welcome wagon has runeth over. B   Dec 10 2003, 01:29 PM
cha914   Ouch...well, actually I was able to get 205 new pi...   Dec 10 2003, 01:41 PM
Eric_Shea   Tony, Tony, Tony... See the shit storm you caused...   Dec 10 2003, 01:50 PM
fiid  

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