Which Diff Is This?

[v8ford351]

hi, i went to test drive an r33 gtst today and when driving it, there was a really slight locking of the wheels when turning a tight corner. not as voilent as a locker, but you can feel it. the guy said it had an aftermarket diff in it.....what do you guys think it could be?

[skylinecouple]

Definately mechanical.See if it does the same in reverse,may be a 2-way.

[MerlinTheHapyPig]

reverse?? fyi the difference between a 1 way and a 2-way is that 1 ways work on acceleration, and 2 ways work on both acceleration and decelleration (not forward and reverse)

anyway, back to the question.

most likely it had a mechanical diff or a very fresh viscous lsd. Mechs' tend to have a very sharp "lock" (viscous lsd's are less noticable) due to clutch plates to activate it, and depending on how new / worn the diff is you'll get varying degrees of tightness from diff to diff.

If it's a 2-way, you'll notice a bit of understeer when slowing down and turning into a corner. but it's sometimes hard to tell the difference between a 1-way or 1.5 way or 2-way with the diff in the car...

Edited February 4, 2006 by MerlinTheHapyPig

[salad]

do really tight cirlces (not fast) in a carpark or something, then let your foot off the accelerator, if the inside wheel keeps skipping, its a 2way, if it doesnt, its a 1.5 or 1way. (may be easier to get someone to stand in the middle of the circle and tell you when the inside wheel is skipping)

and mechanical diffs are very noisy doin low speed corners and stuff, like parking.

you will hear lots of clunking and shuddering

[v8ford351]

ok, thanks alot guys. i bought the car anyway, i'm picking it up next week. i will try the carpark trick and see how i go. either way the diff is better than std so i'm happy.

[V-Spec]

yep you got a mechanical there

have fun