My rear end...

[Erickz]

On a MG Midget with a limited prep 1275 engine, Close ratio gear box what would be the suggested rear end ratio to use at say Mid Ohio and or Grattan?
Thanks!

 

[Ron Bartell]

3.9 is the rear end that you will use at most tracks including Mid O. Don't know about Grattan.

 

[Dayle Frame]

Erick,
Ron's right....the 3.9 is the diff of choice at MidO. I use it as NL, Grattan and the new version of GMan as well.

Dayle

 

[Aaron Johnson]

Rear end is also a calculated figure. I would worry more about final drive ratio than rear end ratio.

Fwiw I use a 3.27 rear end at all tracks. Final drive ratio is another story

 

[Erickz]

Thanks guys!

 

[Bill Underwood]

Fwiw I use a 3.27 rear end at all tracks. Final drive ratio is another story

Sorta off topic, but sorta related. Curious what gearbox you use that allows changing 4th gear ratio. Or are you referring to Overall ratios in gears 1-3?