I was talking to someone that owns a s-coupe. He was telling me if I wld my differential solid, Both wheels would spin at the same speed and get better traction.

Any one know about this?

 

sounds like something that isnt suposed to happen.

 

there are only two times you would want to do that.... racing and racing.

For a car that WILL only go straight on pavement... such as a drag car.. a welded differntial will give you perfect traction as both wheels will be securely fastened together and will always turn at the same rate.

The welded diff in a front wheel drive car also works well on a rally car prepped for dirt..

However, most racing bodies do not sanction a welded diff.. there is no way to judge when it might blow apart or how balanced it might be. If you truely want to go this route.. I suggest haveing a "Spool" machined up to replace your diff.

 

I would def go limited slip instead... Mad's right, its hard to judge if it'll be balanced and work properly.

 

I agree, this is not a good idea. The reason behind the limited slip diff comes from cornering. When you go around a corner, the inside wheel will turn less than the outside wheel (because of the radius difference of the curve created by each tire respectively). If you attempt to make both turn at the same speed, you will lose traction on one or both tires. More info about this can be found at howstuffworks.com by searching limited differential.

 

that is why said it was only for racing.. the only reason it works on a dirt prepped rally car is because dirt allows the inside tire to "scrub" without affecting the turning radius too much.. supposedly it also allows the car to hook up in the dirt and take off.. I imagine it would do the same for snow or ice as well.

 

That is what I thought.

The guy was really intent on me doing this and I just nodded my head like ....sure dude.....

Thanks for the fast replies

 

yah now go back to this dip and tell him why its not a good idea, make him feel stupid, LOL

 

the worst part about a welded diff... you never know when the welds are going to break.. and when they do, you are going to be needing a new transmission as they are going to take the complete differential out of it..

This does not take into account the strain on your CV joints, suspension, bearings, and tyres..

As far as I know, only one factory car ever raced with a locked diff and that was the porsche 935. It's engine was too powerful for the 911 based transmission to handle it.. even being rear wheel drive the locked diff made the car have two cornering modes... SEVERE understeer or TERMINAL oversteer as the locked rear wheels either wanted to push the car straight or kicked out under boost.. a very scary car to drive

 

He might even be reading this.

I met him on the HP.com forum. He lives in Pittsburgh and I sold him my rims.

He kept saying it over and over. He told me to make sure I do a good job on it. He also told me to weld my motor mounts......