Hey guys I just fitted a LSD to my vlrb25det which I'm running the r33 box. Currently I'm running 345 ratio in my diff. What would be the best diff ratio to run with the rb25 and r33 box

Whatever you want. readreadreadreadreadread (http://www.calaisturbo.com.au/showthread.php?t=155191)

What would be the best ratio for acceleration off the mark

R33's have 4.11:1 but they rev at around 3,500 rpm @ 110 km/h.

Not a daily driven car so not a huge issue

The highest ratio you can get for a stock VL BW78 is 4.11:1, from a Nissan Pintara. This will give you the greatest acceleration, but as said, you will high a high engine cruising speed.

Would 3.9s be good option then

bump anyone i have searched but all i can find is diff gears with a mx7 box and rb30 im running rb25det with r33 box

Did you end up running the 3.9 ratio if so wat rpm it at 110 ?

I'd go with 4.11. Thats what's in the R33 which the driveline came out of

Thats wat I was leaning towards or 3.9 which skyline have in the auto , that way won't be singing at 110-120 but still get moving off the line as wanna take mine to drags once get everything right ---------- Post added 30-03-12 at 12:37 ---------- Just wondered wat others where using and wat a 3.9 would rev at 110

I had the stock 3.45's with 230rwkw and was perfect wouldnt want the gears any shorter , my vote leave it as is. (this was rb30et but) though I still feel the same as if it was the 25, mate had 25 with 4.11's and bearly any time in gear

Yeah I'm running 33 box I just want it to leave the line a bit quicker

Just more revs and slip the clutch a bit to try and get boost off the line/quicker What turbo/mods has the 25 got so far?

Clutch won't slip its a twin plate carbon fibre put same one in my bro car he can hold it on limiter 7g drop clutch in 4 gear and it just smokes the rears we had it on a power skid at show no one would believe it how well it grabs , so yeah getting moving a bit of issue lol