hey guys juast wondering how much longer the r31 diff is


thanx robbie

bump some one must no the mesuerment of a 31 diff

Standard H145/65 diff is 1255 mm R31 skyline is 1410mm

thsnx heaps

Quote:

where are those measurements from? the difference is right, its 155mm

but drum to drum and disc to disc measurements are more like 1310mm and 1465 or 1305 and 1460

its the wheel base measurement, of hub to centre of hub i think.

wheel base measurement would take into consideration the offset of the stock wheels wouldnt it? seems to have fluked the right answer though

so is 155mm the difrence i want to just put the 31 diff straight on with out cutting it down and then flair the gards

Okay,
I looked into doing exactly what you want to do.
The problem is for a 1200 ute or coupe, the shell is skinnier than a 120y.
You can run the diff not cut down but you need massive front wheel drive offset and flares. Flares are great however it is illegal to run different offset front to rear.
If you run +45 on the rear it might fit but...if you run +45 on the front you'll hit the strut tower.
Of course you could use spacers but these are also illegal unless they are machined onto the hub and engineered
If you put smaller offset you will increase your track width by more than 2.5cm, this is also illegal.
You mustn't increase your original track (centre to centre of rims) by more than 2.5cm.

Look at the cost of getting it cut down and compare that to a lot of paperwork, fines, and or engineering costs.

I'm getting my dif cut at Dr Datto on the goldcoast, top blokes and good price.
go to http://www.drdatto.com/ and talk to Tony or Adam, they'll sort you out.

Hope i haven't shot you down or anything.
At the end of the day it really depends how legal you want your car to be, what your using it for and how much you want to spend in the long run.
Ty

ok then kool i will have to re think that helped heaps thanx