The Koni Yellow news above is just awesome. Can't wait to give it a try on one of my cars- probably my 75 280z.
FYI, I just rebuilt every component on the underside of my Silver 72 240z- bushings, struts, springs, steering, u-jonts, everything. My goals for the things that impact the suspension were....
- reversable if I want to go back to being completely stock.
- minimize play in steering response.
- fairly flat cornering but not obsessively so. Not a track car but totally fun on mountain roads.
- a bit lower than stock but not screaming as a lowered car.
- street friendly- doesn't pound when you hit bumps...not overly noisy...not bone jarring when on imperfect roads. Still though...firm.
So, the good news is that the choices I made seem have met my goals. I really like how the car rides and handles and the stance is perfect for my tastes. The suspension is pretty firm and fun in corners. I could now use better wheels and tires though. There are no big bangs and jarring when I hit bumps.
My theory was that the two things I have done to my Z suspensions in the past that have caused unpleasant, jarring ride characteristics on the street are... 1) performance anti-roll bars and 2) poly or missing bump stops.
Here is what I used for the suspension.
- Koni Classic red strut inserts.
- Koni soft progressive bump stops ( sorry but I don't have access to the size I used until May).
- Used set of good condition MSA blue lowering springs. My guess is that the Mulholland springs are similar but I don't know. Would be interesting to measure the coil sizes and count the number of coils.
- Energy poly bushings with liberal application of the Energy bushing grease for....front LCA, steering rack, steering coupler, rear inner and outer LCA, front anti-roll bar end links and mount, rear top strut spacer.
- Rubber bushings on the front and back of the T/C rods....though I am sure I could have followed the advice of most and used poly in front and rubber in rear.
- New ball joints and tie rod ends. Cleaned and greased rack.
- Cleaned, greased, reused original front strut top bearings.
- Stock anti-roll bar in front. No anti-roll bar in rear, as was stock.
So, having written all of this, I do though think that a more advanced dampening system would be great for our cars which is why the news about Koni yellows is so interesting to me.
Best of luck and I hope this helps.
J