ok wat does this mean waqt does this do to the car ? and wat is the average price ?

It means the tailshaft spins 4.11 times to produce 1 revolution of the wheel. Different ratios will affect torque at the wheels and wheel speed. eg raise torque, lower wheel speed and vice versa. Cost for a used 4.11 gearset probably $50 and comes with a free pintara diff. Not sure if you can buy them new any more. Then you need to either get a diff place to fit it, or check out the DIY spool fitting guide. A decent diff place will be able to give you prices.

good luck getting one for $50

the tailshaft spins 4.11 times to one wheel rotation. For a street car this is a fairly low ratio. While it will give you more off the line, it will lower your top speed, rev hard on the freeway and munch the juice.

so is this beter then the standard vl diff

it depends what the car is used for. for a VL with an RB30 with a mild setup id stick with the 3.45's.

a twin cammed engine needs short gears like 4.11's

so for a car with pod filter exuast system extractors wats beter

Ah.. Yeah so you know then that you already have a diff, and as said the standard is 3.45 (ie 3.45:1). So going to 4.11's changes your overall gearing. There is actually about a 20% difference between them. Meaning instead of getting say 80 out of first gear you would 74. Likewise for the other gears. It also means, then, that you'd be revving about 20% more at the same speeds. So instead of say 2200rpm on the freeway it'd be closer to 2600rpm. 1st will accel better than 1st used to but you have to shift to 2nd sooner. Because you have heaps of gears in the middle, the main implications would be - better off the mark and through first - which can be worth while - higher revving, more fuel consumption - shorter gearing so you need higher gears sooner. Absorb the concepts, make the decisions. Cheers.

bear in mind that vls in my opinion are geared very tall from the factory.

i was running a set in my vlt it would rev at 3gs in fifth gear and on take off in 1st and second on boost just wheel spin

you will be looking at more than $50 for em though! i got quoted around $150-$200 installed!

ok, $50 was a guess but I'm sure the person I bought my centre & gearset off didn't pay hundreds of dollars for the Pintara diff they pinched them out of. IIRC they said it was around the $50 mark for the whole diff assembly and since Pintaras aren't exactly rare and exotic I find that figure believable. If the $150-200 you quote includes the labour to find/buy/disassemble the Pintara rear end and refit the gearset to your existing diff then I can't see the gears themselves being any more than $100. And if the diff place is selling you the gears for $100, then sure as shi t they are buying them for $50..... Here's a quote from another thread.... Quote: Originally Posted by NVIOUS in another thread ...Plus 4.11's can be found in old nissan pintara's which have the same borg warner diff centre's as VL/VN's, i believe sum also came with 3.9's depending wether it was manual or auto. I managed to score a complete pintara diff for a measly $80 from a wrecked car, ripped out the gears and wacked em into my diff with a VL turbo LSD unit. Cheap as.....

just because "lucky john" got a bargain yesterday doesnt mean you will today.

Theres also a 4.11 gearset in the FS section for $50 atm as well.

Quote: Originally Posted by duz360 a twin cammed engine needs short gears like 4.11's thats worded very badly. What should be said is smaller displacement motors require shorter diff ratios (higher numerically) because they have less torque. The shorter gearing helps get the RPM up quick where the torque is with smaller motors. Generally making it much for drivable.

Quote: Originally Posted by RB30-POWER thats worded very badly. What should be said is smaller displacement motors require shorter diff ratios (higher numerically) because they have less torque. The shorter gearing helps get the RPM up quick where the torque is with smaller motors. Generally making it much for drivable. Yes and no.. It makes sense if you assume the 'twin cam' motor/s in question were say RB20/25's. And all gears are torque multipliers basically, so compared to a stock (3.45) diff a 4.11 will give about 20% better wheel torque and acceleration in the same gear at the same revs. Like yeah it's true what you say but even when the engine is at low RPM you'd get the benefit. Then yeah you'd get quick access to engine power too. Anyway.. that is enough from me right now. Cheers all. Natho81 Some original photos have not been recovered yet.