You are here:

Auto Racing/welded diff. and set up


Dan how well will a welded diff work in a FWD neon? will it help my understeer? what will help the car corner better spring rates,swaybar,struts. we run a mimi stock class in st.pete we can run 3 deg camber in RF and run 1/8 toe in LF. The car is very tight in mid of turn and coming out of turn. Making my turn an A shaped turn. The RF tire has got to the point of ripping chunks out of it. this year we had to run a 400 tread wear next year we can run a 200 TW witch should help. thanks for readin hope you can help.

I  believe a welded diff will make it totally impossible to drive, If anything it will increase yoru understeer to impossible levels.

A swaybar in front and another lighter one in the rear will help a lot.  Try a 1" diameter in front and a 3/4" in the rear.  If the back starts sliding around, change to a 5/8".  You want to run about 1/8" toe OUT in front and maybe 1/16" toe IN in the rear. run your 3 degrees of camber in the RF and about 2 degrees of POSITIVE camber in the  LF so both tires lean into the outside of the corner.

Try those things, ONE AT A TIME!! make notes and driver impressions, and write back when you have learned some , and know more

Glad to help ,  sorry for the delayed response, I was over at the Sebring race track all weekend.

Dan Liddy
Sarasota, Florida  

Auto Racing

All Answers

Answers by Expert:

Ask Experts


Dan Liddy


Anything concerning race cars, 20 years competition experience, Senior Competition Driver Instructor , car builder, mechanic, welding, fabrication, tuning , engine modifications, set up, suspension design. Specializing in Datsun/Nissan products. Please submit questions about RACE CARS ONLY. No street cars, no video game scenarios Thank you.


I have been racing for 20 years, I have been the Central Florida SCCA Regional Championship points for 5 years running, and won the championship in my class 2 times. During my first start in the 60's I won many solo awards and the State Championship Drags. I serve as a senior instructor for SCCA, and have taught in Mercedes AMG events at Daytona, and Dodge Viper Days at Sebring International. I have been in the thick of the competition for all of my career. At one time or another I have driven race cars at speeds nearing 195 MPH. It's quite a ride !

©2017 All rights reserved.