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-   -   lowering the front end (http://forums.pelicanparts.com/porsche-911-technical-forum/139979-lowering-front-end.html)

corey79sc 12-16-2003 07:42 PM

lowering the front end
 
ok i have done the (10 mm bolt that you tern lowering of the front end) and i think it needs more!!!!! what can i do? is there a kit to do this?
corey

geof33 12-16-2003 07:47 PM

Are you saying you have backed out the lowering bolt to the max? The next step would be to remove the rubber bumps, but then your suspension would just suck. What is the measurement from the floor to the high point of the fender well? What is the measurement in the rear? Did you drive it after making the adjustment? Also, you'll most likely need to corner balance and align after dropping it that much.

corey79sc 12-16-2003 07:54 PM

the front is at 25.5 and the back is at 26. i have drove it for about 1 year and it ias been align. what do you mean by corner balance

Gunter 12-16-2003 07:56 PM

Need more info. Just blindly lowering the front makes no sense. Do you plan to install the bump-steer kit? The more you lower, the more negative the camber gets. What camber angle do you want? What height are you aiming for? What are the measurments from the floor to the inner fender lip? Front? Rear?:confused:O.K. That should be reversed: The rear is set half an inch lower than the front to give you a one degree nose down attitude. You want 24.5 rear and 25 front. Anytime you change the height, the camber and toe changes and a re-alignment is necessary. First decide on the proper height, get that set, then do an alignment. Height, Alignment and corner balancing go together. Check the tech articles on this board so you know what you are doing. SmileWavy

corey79sc 12-16-2003 07:59 PM

yes i do what a bump-steer kit in. as for height as low as i can go and still have it on the street.

geof33 12-16-2003 08:07 PM

I guess the ultimate question here is... why so low? To low gets a bit ricey if only used for streeting.:mad:

Your front and rear measurements are already out of whack. Your front inner lip should be around 1/2" HIGHER than the back to maintain proper weight distribution. This is where corner balancing comes in. Corner balancing is getting all of the corners set equally in weight, with you in the car. This also gets the fore/aft balance correct. If your front heavy, your car will plow and eat front brakes. A race car is one thing, but a street car is another matter. You have to balance "cool" and practical/reasonable...

corey79sc 12-16-2003 08:11 PM

so what is the back of you car set at? and front at?

Gunter 12-16-2003 08:13 PM

Wow. Corey, you'll need to read more about the suspension issues before you continue. Search the articles on this board. Good luck.

geof33 12-16-2003 08:21 PM

I'm running 26 left front, 25.25 left rear. (unloaded)

25.75 right front 25.5-.75ish rear. (unloaded)

Keep in mind, my car is balanced at these heights. These are not the exact measurements just what I recall. These were set with 1/2 tank of gas and my 210lb butt in the seat.

I agree with Dr. Gunter... You need to do some 911 basic suspension study before you create a nightmare.

corey79sc 12-17-2003 03:53 PM

ok i know i need to do the balanced and i will but what i am asking is how do i get down to 24 in the front i am at 25. when i get down to 24 then i will lower the back to23.5. i do not know how we got so far off track.thanx
corey

Bill Douglas 12-17-2003 05:49 PM

Maybe the car needs to go over a speed hump to get it to settle into the new settings you've made.

geof33 12-17-2003 06:32 PM

Corey,

We are not off track here. Why do you want the car so low? You risk tearing off your muffler on just about every driveway, not to mention smacking your front end up. I'm fairly certain to go that low you need to do serious suspension mods, like offset spindles etc. I might be wrong on this. You may also have too much preload in your sway arms holding the car "up" if you will. You need to disconnect them to unload them, set up the height and do all the rest... You into it pretty good at this point...

corey79sc 12-17-2003 08:32 PM

i do not think it looks good so high. you are right about the rick of tearing off stuff and it is a good point. i need some pics of some low car.

dickster 12-17-2003 10:53 PM

Quote:

when i get down to 24 then i will lower the back to23.5.
corey,

i am in the middle of this - i just did the rear. however, i am aiming for 24/24.5, which should not present any problems.

if you cannot go lower at the front, it sounds like you need to reindex the t/bars?

look here

http://forums.pelicanparts.com/showthread.php?s=&threadid=122860&highlight=reinde x

Wil Ferch 12-18-2003 07:04 AM

Corey:
It sounds like you're "not listening" .....but you really do need to look at the archived details of what's been said before. Simply slamming a car down is not the right way to go..and starts messing up things like steering and suspension geometry. You really need to understand the effects of "revised camber curves" ...roll-centers, "bump-steer effects" and such. Certainly you can choose to ignore the negative impacts of these things...but it would be in your best interest to first understand what they are before you dismisss them.
Recognize that the "short form" way of setting up any ride height, for narrow bodied cars..is to come up with a fender-height-to-ground measurement that is 1/2" higher for the front than it is for the rear. Doesn't mean front is higher...it just recognizes that the fender is shaped differently to require such numbers. At such a ride height, the car will have a slightly nose-down attitude of about 1 degree..barely perceptable.
If you've gone as far as you can go, the adjuster for the front is now at the end of its range. You need to remove the adjuster, re-index the bar...and re-insert the adjustger and go further. Easy to say...harder to do.
--Wil Ferch

Harlan Chinn 12-18-2003 08:19 AM

While my car was up on the hoist the other day, we did a 2-turn adjustment from the stock setting and that seems to have dropped it some, but not to the point where I need to have the car realigned. I'll take the rear down and some more in front this coming summer when I have the car realigned.

RANDY P 12-18-2003 10:50 AM

click my sig below, 23.75" rear, 24.25" front. not so bad to drive if you have a stock valance.

rjp

dickster 12-18-2003 11:29 AM

randy,

looks great that low, what shocks are you using?

what camber?

cheers.

Wil Ferch 12-18-2003 12:00 PM

One full turn of the front adjuster changes height by about 1/4"

--Wil Ferch

corey79sc 12-18-2003 12:29 PM

randy, i love that look now what did you do to get the front down like that????
thanx


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