ulrichd

Finally got the new wheels and tires for my 78SC and have studied the info on lowering in "101 Projects for your 911" but have some questions.

Front: Do you turn the bolts in the front clockwise or counterclockwise? I assume counterclockwise to back the bolt out. How far do you turn before the car moves down (several rotations or just a small bit?).

Back: Same question as above. After you loosen the bolt closest to the torsion bar, do you turn the lowering bolt clockwise or counterclockwise? Also what bolt size is that?

Thanks in advance, I am learning.

Ulrich

Crimson Nape Racing

it's been a while, so hopefully someone else will chime in. the fronts are as you suggest. if the car is at US spec 4wd height, it takes several turns. you may need to drive it between adjustments to settle the suspension. you can also "bounce" the suspension, but be careful if you push too hard on the fender (ask me how I know), use the bumper. the back is another story altogether - unless you have an aftermarket suspension, the torsion bars need to come out and be repositioned on the spring plates. it takes a few tries to get it right, so be patient.

imcarthur

Front: Do you turn the bolts in the front clockwise or counterclockwise?
Back: Same question as above. After you loosen the bolt closest to the torsion bar, do you turn the lowering bolt clockwise or counterclockwise? Also what bolt size is that?
Ian

Joel Lester

I just got new tires and the front of my car was way too high and looked funny. So, I had a professional shop that tunes race car suspensions (and the like)lower it and weight balance the car. They even used my body weight as a ballast when doing it. I also upgraded to turbo tie-rods and added a bump steer kit while I was at it. It is "dialed in" and drives awesome!

I guess my point is... rather then guess, you might want someone who has tools that most of us don't have to handle it and get the job done right (the first time).

Joel

RANDY P

Should be counterclockwise to lower the nose, if you decide to DIY remember to unwind both sides exactly the same amount - count your rotations.

Click my sig to see 24.5"F /23.75" R height. Corner balancing and a good alignment is mandatory if you really want it to drive right. Have it done by a Porsche specialist - you won't regret it.

rjp

rnln

Randy P,
Your car sit beautiful. Is it harsh on rough surface road?

KCPSG

Can't help w/the rear adjustment. but imcarthur is right the front is counterclockwise for lowering and 1 turn is equal to 1/4"

RANDY P

Nope, rides perfectly. The car was set up at a specialty shop - Lowered, corner balanced, and custom alignment settings.

rjp

ron mcatee

When I lowered my car, I got some white touch up paint and put an arrow on each bolt head pointing to the front of the car. Then when I made the adjustment, I knew how much it had turned.

imcarthur

Ulrich

One things that bears emphasizing with a 911 is that you have to view it as a system. You can't just lower the front & walk away. Or the rear. Or one side vs another. The chassis is very rigid as you will see first hand when you jack it up. What you do at one end, impacts the other end too.

So, height, corner balance, & alignment (eg camber) are all related & changing one, changes them all. That's why many suggest you leave it to a pro.

It can be done at home, but only if you're willing to learn how to do height, corner balance, & alignment - all in the comfort of your own garage.

Ian

Tmack

Does any body know of any pros in the south eastern connecticut area thats good with lowering and raising?

rnln

I kind of imagine what heigh is. I know what alignment is. What is coner balance?

ron mcatee

The car has four corners, left front, right front, left rear, and right rear. Corner balanicing is adjusting the suspsension where all corners are balanced in relation to the weight of the car, including the simulated weight of the driver as if he was in the car.

Crivens

Isnt the height adjust limited at DIY level. I thought you had to get a workshop do it with load on the car?

ron mcatee

I've done several lowering jobs on different 911's. A DIYer can set the ride heights for front and rear, but when it comes to corner balancing, toe-in, camber, etc., it's best left to the guys who have the equipment to fine tune it and do it right. I always take mine in after any lowering job.