I recently welded the stock differential in my 2g GST. I have never really been able to find information on this subject but all of the "wise" people say "dont do it, trust me"
Since I haven't been able to find any information on it, I decided to do; 'The Top 5 reasons NOT to weld your differential'
5.) A welded differential makes the diver side and passenger side tire fight the asphault when turning, resulting is premature tire wear.
4.) Turning also puts a lot of stress on the CV joints and axles. I have already had to replace both axles. One of them only had 10,000mi on it, the other half shafts mileage was unknown. The new axles (Autozone) are already clicking under hard, slow turns and all right hand turns over 15MPH.
3.) Your turning radius gets WAY worse. You can forget about making those u-turns that you were already having problems making. It jerks and shakes during u-turns anyhow, it makes for a pretty unpleasant ride.
2.) I am pretty sure that the added tension from the welded diff daily driving has also caused my lower ball joints to go out but then again, they could be the factory ones from 1995?
1.) The power steering rack hasn't handled the abuse very well. I recently started hearing a clunking noise when I would go over bumps. As the clunking got louder, I started to notice a little wheel hop while driving on wet roads. The power steering rack has got almost 1/2" in it and I can move my tire from side to side
If you have the money, and you plan to turn your steering wheel while on the street... save up and buy a quaife or kazz. If your budget is as low as mine, and you need your car to get to your job OR if you plan on towing your car to the track... the do it.
Best ET: 12.63@108mph with a 1.85 60' on 19-20psi with a td05h
but 60' of that night was a 1.78 but I broke 2 teeth off of my stock differential (and I didn't have a replacement, hence my welded diff, and this thread
Launch: 5750rpm [Hard] (DSMLink)
Tires: MT Drag ETs (12-13psi)
If I didn't drive the GST everyday, I might not mind it as much but it has gotten really old, and it will greatly reduce my resale if I don't replace it before someone test drives it.
Other than those things, the traction is awesome.