Rear height adjuster?

[Tori]

Is this eccentric the one for fine tune height adjustment ?


I lowered my car today, one spline on the outer and it's lower than i had wanted. Can i bring it up with this eccentric? Would it be in the lowest setting the way it's currently positioned? My car had already been lowered by the PO, was at 25.5 Front, and 25.5 Rear, but the rear was still higher than i wanted, Just trying to get the lip to the top of the tire. The one spline got me to 23.25" which has the top of the rear buried in the fender and now i can't haul fat chics.

[ClickClickBoom]

That's for toe, camber is to the rear. Lock is the one closest to the tbar, height is just to the rear of that one. If you don't have a 24MM and 36MM thin wrenches you will be skrewed, do not loosen unless you have the wrenches to secure the thin bolt heads while tightening. Oh yeah the thin set from snap on, was painful, wallet won't look at me since. If you think it's just a loosen and fiddle, think again, best thing you can do is return it to the original splines and call it good, unless you want to do this for tuning:
http://forums.pelicanparts.com/porsche-911-technical-forum/297155-how-measure-toe-out.html

http://forums.pelicanparts.com/porsche-911-technical-forum/926798-suspension-upgrade.html
It isn't that simple......

[Tori]

Ahh, okay. Thank you for clarifying. I know i've read that before somewhere, but after reading 15 odd "lowering" posts, you're brain starts to screw it all up. So much commentary. It was much simpler than i had expected,.... but then, i'm not done yet either it looks.

You think if i futz with the thin head bolts, i'll create more issues for myself once it's time to align ?

[ClickClickBoom]

Originally Posted by Tori

You think if i futz with the thin head bolts, i'll create more issues for myself once it's time to align ?

Not necessarily. But your corner balance will be off. Having your car that low causes a multitude of other issues, reduced suspension travel, bump steer are just a couple. Tire size and tbar size are the other factors, corner balancing is the other big issue. Braking and cornering, can and will be affected if the corner weights are off, even at moderate speeds, go to my suspension upgrade that I linked and read the couple of other linked threads. The Ray Scruggs jpg's are a quick and dirty explanation. Having an adjustable car means you can adjust it correctly and get wonderful results, or do it wrong and it will handle like 1965 Buick with flat tires. Figure out what you are trying to achieve, and do it yourself correctly or pay to have it done correctly by a shop. If all you want is "the look", disregard all the above and carry on.

[Tori]

I appreciate the continued support. I don't want the car this low. I will revisit the Torsions tomorrow and see about raising it back up. Hopefully somewhere in between where it was and where it sits now.

[DRACO A5OG]

Use Master Ferch's calculator you also need to go get a HF angle finder:

911 Spring Plate Angle Calculator

[Tori]

I have an app for that Actually, we have one of those angle tools at work too. Thanks for the calculator tool. That should help.

[DRACO A5OG]

It is just a guide, but will get you close.

I suggest centering the height adjuster, place t-bars where the calculator suggests then use the height adjustment bolt. You see, the height depends on specific weight of your car and age of the t-bars.

It took me over 100 times to get it where I wanted vs my buddy we only took 12 tries. Yeah my OCD kills me.

Disconnect the sway bar, you must remove all load to the car, shocks too. Car will settle so bounce on it to take the pre-load out of the equation.

[Joe Bob]

Get an alignment after your adjustments.

[Tori]

Originally Posted by DRACO A5OG

It is just a guide, but will get you close.

I suggest centering the height adjuster, place t-bars where the calculator suggests then use the height adjustment bolt. You see, the height depends on specific weight of your car and age of the t-bars.

It took me over 100 times to get it where I wanted vs my buddy we only took 12 tries. Yeah my OCD kills me.

Disconnect the sway bar, you must remove all load to the car, shocks too. Car will settle so bounce on it to take the pre-load out of the equation.

How do you know where the height adjuster is set ? Is it evident once the nut is off ?

I'm going to hold off messing with it until i get new spring plate bushes now that i see the condition of mine. That'll give you time to drive up and help out. Afterall, what's one more time after 112 tries

[DRACO A5OG]

LOL, Pizza and a beer and I will think about it :-)

Snap a pic of the t-bar cover on the plate, if you take a ruler, and measure it, it should be in the center from the factory, if it was messed with then you can tell, it will be biased up or down.



The two larger bolts, one is a lock and the other is the adjuster, loosen and use a think bicycle wrench on one.

[Joe Bob]

Many years ago when I replaced all my bushings, I had the foresight to install aftermarket, adjustable swing plates. Every time I have to adjust height because tire choices are now so limited, I pat myself on the back....

BTW, thin wrenches can be made with a grinder or you can use bicycle wrenches made by Park.

[Tori]

Originally Posted by DRACO A5OG

LOL, Pizza and a beer and I will think about it :-)

Hell, i'll one better pizza and beer. Afterwards dinner at McClintocs steakhouse!
(but of course pizza and beer whilst)

I work at an auto repair shop, i'm sure we have the skinny wrenches. I'll ask my alignment tech what sizes we have. If not, i'll make my own. I've got a *****en set of tools.

[Tori]

Here's mine. Does look a bit biased, doesn't it. We can center it, then reclock the big splines and go from there.

I've got new wheels coming for the rear, so will do them and the bushes at the same time. I've also decided to drill the end caps of the covers so i can keep the TB in place during removal. Heading to the hardware store to find a rubber plug for the hole. Or i may weld a nut on the end too which would allow use of a bolt to push the cap off, and then a short bolt could act as a plug.

[DRACO A5OG]

Well, I may just come up with wifey, a little road trip if you want a hand on alignment :-)

PM me

Yes, it is a bit biased, someone messed with it already.

I can bring my LM2 and skinny wrench too .

[uwanna]

Originally Posted by DRACO A5OG

Snap a pic of the t-bar cover on the plate, if you take a ruler, and measure it, it should be in the center from the factory, if it was messed with then you can tell, it will be biased up or down.

Jim,
The spring plate adjusters came from the factory with the eccentric set so you could
ONLY raise the suspension/ride height, not lower it. Had something to do with Gvmt mandated
bumper heights. Lots of Pcar dealers made the extra money lowering these cars back then because they had to reindex the torsion bars. Some also removed the huge "washer spacer" on the top of the front strut. Most folks didn't want their new Porsche 911 sitting up like a baby buggy.LOL
And yes while reindexing set the eccentric in the middle to help with corner balancing.
Grant

[DRACO A5OG]

Hey Grant

Thanks for the info, that makes total sense, Dealer Basturds, sneaky sneaky.

Jim

[jrsully]

Anybody have any pics (both sides) of an assembled T bar plate/trailing arm on an early 911 (71 T).? Mine is all apart and I need to get it together as a roller for further adjustment at the shop. Any help appreciated. Thx