Old Fiat Driver
Old Fiat Driver
Right on Dennsirh
Before the engine swap my car was handeling great. After the engine swap the power would literally wad the car up and spit it out somewhere in the corner. Also I couldn't get it balanced between high speed corners and low speed corners. It would push on low speed corners and oversteer on high speed corners. I could make it work under either condition but it would kill the other condition. Also the extra power would light up the inside rear tire even in third gear curves, not even hard corners. In those days we were using Hoosire bias tires, 205-60 X 13, and we were melting the tread so bad that chuncks of the tread were coming off the tire as large as quarters. I tried stiffer front springs to get the rear hooked up but that killed the moderate to tighter corners with push. I finally discovered that the PBS modification that I used for the front trailing link that changed the front rubber bushing to a Heim joint also shortened the trailing link adding more front caster. The caster turned out to be 9.5 degrees. This added a lot of additional front camber on tight corners causing it to push, The effect was less pronounced on high speed corners because of the reduced steering input. After correcting the problem and bringing the front caster to 6 degrees I could balance the high and low speed corners. This allowed me to increase to front spring rate and alter the rear toe which helped put the power to the ground, it was a major improvement. I also dropped the boost down from 20 PSI to 12 PSI but I did that early on before the caster change and still had the same problems. I then found the LSD from Germany for the Scorpion transaxle and that finished it. The car would hook up and literally jump off the corners. I think the main problem is that with the extra power the handeling window becomes smaller and requires more precise adjustments. The fiat 2 liter turbo has a big valve head, PBS B3 cams, 9.2 to 1 compression, modified Spika sequential fuel injection, four throttle body intake and a few other minor improvements. I never dynoed this motor but PBS did dyno several 2 liters turbos and they told me that it should be around 300 HP but it's the torque of the turbo that really makes things happen since the Hourse power sells cars and torque propells cars. I know you'll get it all worked out and then you'll have a great modern setup.
Keep revin
Charlie
Before the engine swap my car was handeling great. After the engine swap the power would literally wad the car up and spit it out somewhere in the corner. Also I couldn't get it balanced between high speed corners and low speed corners. It would push on low speed corners and oversteer on high speed corners. I could make it work under either condition but it would kill the other condition. Also the extra power would light up the inside rear tire even in third gear curves, not even hard corners. In those days we were using Hoosire bias tires, 205-60 X 13, and we were melting the tread so bad that chuncks of the tread were coming off the tire as large as quarters. I tried stiffer front springs to get the rear hooked up but that killed the moderate to tighter corners with push. I finally discovered that the PBS modification that I used for the front trailing link that changed the front rubber bushing to a Heim joint also shortened the trailing link adding more front caster. The caster turned out to be 9.5 degrees. This added a lot of additional front camber on tight corners causing it to push, The effect was less pronounced on high speed corners because of the reduced steering input. After correcting the problem and bringing the front caster to 6 degrees I could balance the high and low speed corners. This allowed me to increase to front spring rate and alter the rear toe which helped put the power to the ground, it was a major improvement. I also dropped the boost down from 20 PSI to 12 PSI but I did that early on before the caster change and still had the same problems. I then found the LSD from Germany for the Scorpion transaxle and that finished it. The car would hook up and literally jump off the corners. I think the main problem is that with the extra power the handeling window becomes smaller and requires more precise adjustments. The fiat 2 liter turbo has a big valve head, PBS B3 cams, 9.2 to 1 compression, modified Spika sequential fuel injection, four throttle body intake and a few other minor improvements. I never dynoed this motor but PBS did dyno several 2 liters turbos and they told me that it should be around 300 HP but it's the torque of the turbo that really makes things happen since the Hourse power sells cars and torque propells cars. I know you'll get it all worked out and then you'll have a great modern setup.
Keep revin
Charlie
