Setting up Spring plates to be middle of the road?

[euro911sc]

I just installed all the poly bronze parts + monoballs in the rear susp. I have to flip the car around and do the front susp. next. However, now is the time to set up the rear height adjustments so the spring plates are in the middle of their adjustment range and the plates are at the same angle... at least that is my assumption...

good assumption? how to other then just spinning the eccentric and measuring the whole 360 degrees?

Do the same with toe and camber?

Anything else I should set up/check (susp. wise) before I slap the drive train back in the car? Rear sway bar mounts are checked & good to go already.

-Michael

[na2ub]

I am just wrapping up the same thing. The spring plates are centered, when they look centered, i.e. the distance above and below the "forward half" of the spring plate is equal. The camber and toe are a little more tricky, especially if your ride height is different. You can set these in the middle, which would mean the camber eccentric "lobe" is pointing 3 o'clock or 9 o'clock, and the toe in middle with the lobe pointing 12 o'clock or 6 o'clock. You will still have to mess with these multiple times afterwards, or just get an alignment done professionally. Looking at the passenger side: Toe increases as the control arm moves forward (i.e. lobe moves more towards 9'clock) and camber increases as the control arm moves downward (i.e. lobe moves more toward 12 o'clock). Hope that helps. I am only on iteration 2 of setting both, so hopefully not too many more times. Make sure you have your ride height where you want it first, as it impacts both camber and toe settings. Each degree of positive camber in the rear is supposed to increase your ride height about 7-8mm. Make sure you drive it a little between each iteration of adjustment, to get everything settled.

[boyt911sc]

Originally Posted by euro911sc

I just installed all the poly bronze parts + monoballs in the rear susp. I have to flip the car around and do the front susp. next. However, now is the time to set up the rear height adjustments so the spring plates are in the middle of their adjustment range and the plates are at the same angle... at least that is my assumption...

good assumption? how to other then just spinning the eccentric and measuring the whole 360 degrees?

Do the same with toe and camber?

Anything else I should set up/check (susp. wise) before I slap the drive train back in the car? Rear sway bar mounts are checked & good to go already.

-Michael

Michael,

You can visually inspect the rear spring plates and measure the center lines (spring plates & adjusting plates). I like to have a punched marks on all of them. Both the sping plates, and adjusting bolts (height, camber, & toe-in). Something like this:



Once you have the adjusting bolts installed on the sping plates, it is difficult to know or remember where the 'lobe' is located during adjustment. But if you have the reference 'marker', it is easier to determine which direction to go for the adjustment. No need to install the rear sway bar at this point. BTW, do you have the 24 mm and 28 mm thin wrenches for the spring plates? I've spent the whole day with a friend tinkering the ride height last week and another one coming soon.

Tony

[BK911]

Is this for mainly a track car? My '73 is set to max camber and max toe in the rear. So maybe start there?

[euro911sc]

It is for a track car, or rather heavily tracked street car I'm a drive there drive home track junkie.

Marking the eccentrics is a good idea. I do have the thin wrench as needed for the ride height adjustments. Going to be a fun weekend!

-Michael