building a sportquattro

[hemihead]

i've been following this thread closely, i'm doing a lwb build in new zealand so alot of the stuff you've done has been a great help to me. One thing i'd love to know is what are you doing to increase your track enough to fill out the guards without screwing up your geometry? i need to gain 60-70mm a side and from the reseach i've done low offset wheels and spacers give you all sorts of problems. btw i'm pretty sure the spacers under the back of the subframe would be part of the many things they did to restore the geometry when they added track width to the sportquattro. looking awesome anyway keep up the good work!

[ralleyquattro]

While browsing through my photoalbum, I came across this picture. I took it myself underneath an original Sport Quattro. It looks like it uses substantial spacers between the subframe.

Yep, that a road car. Only the front subframe and tranny monunt get these spacers (rear none). Part numbers are 859 199 359 for subframe and 859 199 359A for mounts.

Here is couple of pics of the back side of the subframe including the tranny mounts.

http://www.motorgeek.com/phpBB2/gallery2.php/main.php?g2_itemId=85392

http://www.motorgeek.com/phpBB2/gallery2.php/main.php?g2_itemId=85398

BTW you have to live under that car to notice all the small details... lucky for me I have filled my camera with pics of couple of cars in my lifetime..

BTW rally cars used alloy subframe mounts that had the spacer incorporated into the mount and height depended on the height of the suspension/type of event.
Obvioulsy rally cars did not have tranny/diff mounts on the subframe.

Cheers
Martin

[s2driveruk]

truely inspirational work and the pictures are fantastic Jeffer. I really cannot wait to see the finished article...lets hope it makes a trip to the UK

David

[Jeffer]

ok here are the figures:
Front is 151 lbs-inch
Rear is 143 lbs-inch

The length of the spring is approx 14,5 inch

There are are couple of options.
1. Cut are few coils, 2 will bring it to 205 lbs. This will lower it approx 7 cm.
2. Buy the proper ones.

Option 2 sounds best in this case. Dont it?

[volcano rs]

From speaking to various people the 4-500lb range seems about the mark for a firm track set up. The road going sport would need long springs seeing as they only had 15" wheels!

On another note, how amazing does the old Dialynx sport look!

that had turrets cut and raised so the spring sits further up . you still have good travel on springs but it also allowes you to lower it without it bottoming out.

[newsh]

A good ballpark to aim for is for the spring/shock to be compressed 1/3 of its travel by the weight of the car.

[Jeffer]

I was planning on measureing the springs today, but it didn't work out. I've got the calculation here aswell Dolf. Will try to squeeze the measuring in tommorrow. Cheers

[G60Rallye]

From speaking to various people the 4-500lb range seems about the mark for a firm track set up. The road going sport would need long springs seeing as they only had 15" wheels!

On another note, how amazing does the old Dialynx sport look!

[quattro84]

well, this is just my own personal view and i'm sure others will vary, but i'd say for a good low firm setup you'd want 400-500lb springs and possibly 7-8" springs with a helper spring to avoid any slack on wheel lift...

+1

Based on feedback from a friend that does the setup for trackday cars that run with a similar overall weight & distribution.
Static setup with springs is not that complicated in comparance to dynamic load changes with dampers & ARB's.

@ Jeffer if you bring your springs to me i can measure spring stiffness for you.

[Puglife]

well, this is just my own personal view and i'm sure others will vary, but i'd say for a good low firm setup you'd want 400-500lb springs and possibly 7-8" springs with a helper spring to avoid any slack on wheel lift...

[Jeffer]

it looked like original stuff. That car had quite a range rover like ride height So that will be correct. It's indeed a big relief to see the end. Well end it isn't but a major milestone in getting this thing on the road!

[GT500]

While browsing through my photoalbum, I came across this picture. I took it myself underneath an original Sport Quattro. It looks like it uses substantial spacers between the subframe.

That will be for a forest/gravel car. Lift the car on the springs for the extra ground clearence and you would want to get the wishbone level again, subframe down would get that done.
Don't forget its an old way of doing suspension. Has its limitations.
I recon you won't be running yours at "range rover" heights!

Keep up the fantastic work! You must be able to see the light at the end of the tunnel?!!

[Jeffer]

Lengths is dependant on ride height you want but i'd advise 400-500lb fronts and slightly softer rear springs as a good firm setup... i cant see the SPQ weighing that much tbh and that should be plenty for stiff ride. If you wanted softer then 350 front and 300 rear may be another good basepoint.

measuring stock Quattro shocks i've gone for 9" 300lb front and 9" 275lb rears on my Coupe Quattro Rally replica...

Thats interesting info Jay. I like to have it quite low. Not as low as the Dialynx SQ, but not far of that :mischeif:. And as stiff, within reason
What length size you think that is?

Later i'll remove the rear spring and will position the car on the lift with the right ride height. That will give me a ball park on the spring length.

[Jeffer]

While browsing through my photoalbum, I came across this picture. I took it myself underneath an original Sport Quattro. It looks like it uses substantial spacers between the subframe.

[URQguy]

Yeah, send the DWG file on over!! HankIroz at Yahoo dot com!! I appriciate it