If I have been tracking your progression right, you were running a significantly stiffer than stock rear spring with a light rear bar. What did you change and why?

I ran 600# rear springs and no bar for several years. I went back to 250# rear springs and a fairly light rear bar over the summer on an effort to get more forward grip.

Especially at GGs style first gear courses, the car just spun the rear tires too much.

It now hooks up much better making for faster times and better tire life but I did have to adjust my driving to the loss of lateral grip.

Hmmmm. That's counter intuitive to me, softening the rear to get more front bite. Sounds like you lost overall bite and gained rear traction.

The front lateral grip is still very good, the rear lateral grip is where I gave a little bit on in certain situations. The forward bite increase more than makes up for it though.

Softening the rear will allow the weight to transfer to the front when lifting or when the brake is applied, putting more weight over the front tires. Can also have this same effect by decreasing the rebound on the rear shocks.

Had to add data to this run from Sunday at Marana just to see for myself.

I'm particularly pleased with the cars ability to transition back and forth 1G to 1G several times in a row in a 45-50 mph slalom without breaking a sweat or sliding a tire. We had two drivers running back to back in back to back run groups, so 16 runs total in a little about 2 and a half hours time. We sprayed the right rear and right front tire once to cool them down after the 12th run is all. Other than that just turn the key and go. Still haven't touched a screw or a knob since last October.

Pretty happy camper...



Here are some cool pics from the event as well.

https://photos.smugmug.com/photos/i-...PDtNnvT-XL.jpg

https://photos.smugmug.com/photos/i-...TqQSf2K-XL.jpg

https://photos.smugmug.com/photos/i-...FrFvjQq-XL.jpg

https://photos.smugmug.com/photos/i-...9pV7BFW-XL.jpg

https://photos.smugmug.com/photos/i-...gmVcxn2-XL.jpg

https://photos.smugmug.com/photos/i-...6fptpVg-XL.jpg

Way more great pics from Amanda Hitt here... https://adventurewife.smugmug.com/20...SCCA/i-QF7TkGR

Finally got around to adding that safety item that I hope I never have to use. On board fire system...

https://photos.smugmug.com/1985-Mont..._150128-XL.jpg

Here you can see the manual pull T-handle and the driver nozzle.

https://photos.smugmug.com/1985-Mont..._153308-XL.jpg

Here is the engine nozzle

https://photos.smugmug.com/1985-Mont..._141141-XL.jpg

https://photos.smugmug.com/1985-Mont..._141131-XL.jpg

I didn't grab a pic of the third nozzle that sticks through the trunk floor and points at the fuel pump and fuel lines on top of the fuel tank.

I also finally put a pretty good bend up on the throttle pedal to make it easier to get 100% throttle, probably raised it an inch off the floor.

https://photos.smugmug.com/1985-Mont..._153326-XL.jpg

Now I'm all ready for two days of on track action at Arizona Motorsports Park Feb 22-23. Skipping the SCCA Autocross this weekend to save my tires for the track weekend.

Lance, looks good! Did you get an automatic system or just a manual system?

Been looking at Safecraft systems also, and by the way ... please make sure ALL firewall pass-throughs are sealed. That pic w the wire loom looks suspiciously loose, FYI.

Michael

Thanks Michael. It's a 10# 3 nozzle manual system.

The event pics were great. That 70 Chevelle looks so good even with that pole accident in the drive's side.

Glad the car is working well for you, Lance!