Quote:
Originally Posted by TheKurgan  Hi
I've seen your posts and they are good reading. He already has coil overs in the front with the FRPP kit and switching to the FR500S dampers are very pricey. I also have the FRPP kit and mine only hits the bump stops on hard bumps like it's supposed to..I don't have the nose diving problem on mine. I would be interested to see if it changes his car. I can't imagine springs changing hitting the stops if you want to stay low. The Griggs kit lowers the car 2.5 inches. Are there even stops on the front ? I only seen them on the back... |
Hi Kurgan,
The FRPP kit does not include coilovers. The FRPP S197 suspension parts supplied in the FR3 kit are conventional McPherson struts just like what come standard on all street S197 chassis. The FRPP handling kits cannot be adjusted for ride height or spring rate without a complete spring change. There are very few springs on the market which state spring rate at what compressed height so you can make an informed decision for purchase.
Coilovers on the other hand give you complete freedom to pick and choose your spring rate and ride height. Coilovers also allow mixing two different spring rates and heights to get an intermediate spring rate that can act progressive depending on how well you do your engineering work.
Your car is bottoming out all the time and you just don't know what it feels like because you have no other frame of reference to use to compare it with. Try this, park your car on level ground and turn the wheels all the way to the right and shut off the engine. Get a flashlight and look at the gap between the foam bumpstop and the top of the strut body. Measure the gap with a tape measure, what do you get? Want to see if your car is bottoming out for real? Stick a piece of modeling clay on top of your struts and drive around the block once at normal speeds. I can assure you the clay will be flat as a pancake when you stop and check it.
Go to the rear of your car and look through the wheel spokes at the foam bumpstop facing up at the chassis rail. How much gap is there between the bumpstop and the arch in the frame rails?
I know the answers to both of these questions because I had a set of Eibach ProKit sport springs (you do know that Eibach supplies FRPP with Eibach ProKit springs relabeled as FRPP) on my own car for a while before I got tired of the poor ride and handling. I have also installed these springs sourced from FRPP and Eibach and they are just not very good for track use or the street largely for the same reasons.
The FRPP/Eibach ProKit springs are just too low and too soft for too much of their travel before the progressive rate kicks in which allows the car to bottom out too often to have a good ride and handle right. My Porsche 911 never bottomed out even after getting airborne at the track but my S197GT used to bottom out repeatedly on these springs in just one block of street driving.
HTH!
