Had the Fiat out for another SCCA day. Little adjustment to sways and balance was better than last event. Enjoy the video which features the joyous full throttle fun of our complete RoadsterSport Exhaust System!
Time for bars I can adjust between runs at Autocross and track events. Today the balance was good but as tires age the need to adjust the sways on the fly gets more and more interesting, and the prior event it would have saved the day to have ability to adjust on the fly.
Karcepts was told by a customer that these bars don't fit the Fiat 124 up front, but they installed easily here. Our guess is that the prior customer had stock intercooler with hard plastic intercooler tubes, with silicon tubes of EC intercooler it works with no issues, no rub, it fits.
And....I hate them. Not every new test product works out, on the site but will add my comments right now that strongly suggest these are dedicated track cars...ONLY. Constant pad knock will drive most folks crazy, even the street pads have the worst pad squeal I have ever experienced. And for all that they fit just about no wheels other than 6UL... unless you add spacers.
Getting plenty of compliments on the setup driving around town yesterday. One serious looking biker pulled off to have a chat and ask me questions about the fun exhaust note, the wheels and tires, the Spyder in general.
Limited Slips....A Video Comparison of Before And After!
Our Fiat 124 'Fiata' in SCCA autocross. We started with base model Classica, no limited slip. About 17 seconds after the start I am heading up hill and slightly left and you can actually SEE the black tire line of slightly unloaded inside driver's rear wheel spinning and you can hear car is not hooking up. We overlaid the data with buddy in supercharged Miata that I compete against and he gained over half a second on me in just the ONE instance of slip, and there are several more on the video. Our estimate at the time was that lack of the limited slip was costing us roughly 1.5 seconds that day.
We then added extra rear pumpkin with limited slip we had for ND, that worked except gearing totally different and 2nd gear carried us through 72mph. We sent our stock rear housing to Japan for our friends at OSGIKEN to develop their famous limited slips to the Fiat's housing (same as ND Automatic). Did the same with first NC years ago so we could have [url="https://www.good-win-racing.com/Mazda-Performance-Part/61-0560.html"]OSGIKEN limited slip for NC[/url]. With the OsGIKEN back from world travels and installed in our Fiat 124 now the autocross videos looks like below...notice now you cannot hear any time lost to wheel spin. Hear the difference? With video above we were still getting into the setup on the car and we were 2.5 seconds slower than the faster STR guys, now we are often faster than ND in STR....even on same tires (video below finished 1.5 seconds ahead of fastest STR ND instead of 2.5 seconds behind thanks to better suspension setup, alignment, other bits....and limited slip). What may not be so obvious from the video comparison is driver confidence goes up when not so concerned with being gentle throttle on corner exits. Without limited slip I had to feather throttle at places until car hooked up straight, and I often adjusted my line to get weight on both tires earlier than ideal. With the limited slip I can run 100% throttle much more of the time, get on throttle at corner exit just a bit earlier, and dial a more ideal line and just let the limited slip do it's job of hooking me up out of corners. Oh yeah....with limited slip it's both faster and more fun!