I'm in the market for new suspension for our TT and this has been the most helpful thread

thanks cannga

 

KA 997TT,
Congrats, you made me want to test drive your car! Many ways to skin the very soft stock Turbo: Bilstein, JIC Cross, JRZ, Moton. Anything to make this car stiffer is in general a good thing.

Abdullah,
Thank you and glad to be of help. With just 3 simple changes -- coilover, alignment changes, sways plus Tarett drop links -- the Turbo IMO is transformed into a car that is vastly more aggressive and fun than stock and yields very little to the world's best. Of course, as a daily driver, it is already without peer, so only even more so now.

BTW, I could not emphasize enough the effect of the alignment changes of neg. front camber and front toe-out. It makes the steering so much quicker and more responsive (front toe out), and the car to rotate in a much more natural manner in corners (front toe out AND front neg camber).
I don't recommend the front toe out alignment to anyone but if anyone decides to try it , I should repeat the advice from my tuner (the excellent Lucent Motorsports of Los Angeles): Be very very very careful the first few weeks and don't push the car to the limit during this time. Front toe-out is in general a setting for track and race cars, but the stock Turbo has such lazy steering response that IMO it is particularly synergistic. Above all, it is completely reversible.

 

So far I have on my car, Bilstein damptronics, GMG sway bars, Tarrett toe links, tarrett dog bones, and lastly GMG bushings. Phew...will post impressions.

BTW is there anything else I need? thought about going for lower control arms but was told otherwise unless I was tracking the car alot. Planning to track 4-5 times this year at most.

 

I have to look at my toe setting, but camber is sitting at -1.5 car steers very nicely and much easier to point.

 

here are the specs

 

Congrats. You've gone 3 or 4 steps *beyond* me. I don't think I am in a position to tell you anything. LOL. Kidding aside, you've done part 1, stiffenening the car. There is a part 2, which is modifying the alignment specs to make the car understeer less as I emphasized in the post above. Don't forget the front negative camber -- this is a no brainer.

Also, the front toe-out: Not recommending one way or another and not for everyone, merely suggesting the tantalizing possibility.

 

That's a pretty darn good suspension setup. I don't think control arms are necessary. Just make sure you get an aggressive alignment with some front end camber and toe out. Can is right on. This really improves things overall. Understeer, GONE! (almost at least).

I think I'm going to do some rear dog bones next.

 

thanks guys, I am waiting for BBI to gimme some specs on alignment so I can dial them in at my porsche stealership.

Gotboost thanks for all the advice couple bodyshops tried charging me a 20 hour labour charge to install the clutch and flywheel. Now I got it down to 13 hours including alignment and corner balance.

 

Another pic:

 

Here are the alignment specs from BBI for my car.

-1.9 front camber
-2.1 rear camber
1.0 toe out front
4.5 toe in rear

This is what they did for my car.

 

nice

 

4.5 rear toe in or .45? The 1.0 toe out in front seems pretty aggressive as well.

 

.45 rear .10 out front. My bad.

 

Mike, would you please check the unit of your toe settting? It could be in degree, minute, or distance -- which itself could be in inches or mm. For example my front toe out setting is minus 0.02 degree, or 1.2 minute, which would make it exactly like what you are writing here. My rear toe-in is positive 0.14 degree, or 8.4 minutes (this is same as stock).

BTW, the following is a conversion formula and a table for a car with 25.5" wheel, which just happens to be about the same as our Turbo's wheels: http://www.ground-control.com/toe-out.htm
Toe-Out Data For One Tire With A Diameter of 25.5 Inches
THIS IS "PER SIDE", multiply by "2" for TOTAL TOE
Fraction Inches Minutes Degrees mm
1/32 0.03125 4.21292 0.070215 0.8
1/16 0.06250 8.42586 0.140431 1.5
3/32 0.09375 12.6388 0.210647 2.4
1/8 0.12500 16.8518 0.280863 3.1
5/32 0.15625 21.0647 0.351079 3.9
3/16 0.18750 25.2778 0.421296 4.7
7/32 0.21875 29.4908 0.491514 5.5
1/4 0.25000 33.7039 0.561732 6.4

 

Can,

My understanding is that it was in degrees.