Notchy Bnr32 Box

[DAS KAMU]

hey ,

New to gtr ownership

when changing gears you can really feel it going into gear and sort of feel the next gear engaging through the stick..

as i said i never owned a gtr before so im not sure what is normal

p.s im changing the gear box oil next week just because i know it prob never has been changed over in jdm land

what are your thoughts on this?

[Duncan]

yeah they are pretty heavy duty gearboxes stock, and the synchros do wear. Just put redline lightweight gearbox oil in it and see if it helps. Gearbox oil in every car I've bought in from japan has been terrible - probably never been changed.

[R31Nismoid]

Its an old box now by most standards, and who knows the life its had

likely to be tired and worn really, part and parcel

[DAS KAMU]

sweet see how it goes if no good rebuild time

but it works real good though just feels industrial ?

[Duncan]

exactly it is just a heavy duty box designed to take heaps of power. it will never shift like an mx5, I have a brand new gearbox in my race car and it is still quite clunky

anyway, try the oil it helps the synchros stop crunching in older boxes. If that doesn't work its time for new bearing and sychros

[DAS KAMU]

exactly it is just a heavy duty box designed to take heaps of power. it will never shift like an mx5, I have a brand new gearbox in my race car and it is still quite clunky

anyway, try the oil it helps the synchros stop crunching in older boxes. If that doesn't work its time for new bearing and sychros

sweet well hope to catch up some day and steal some more advice:)

[luke james]

If it is every gear I would say change the oil to a lighter weight oil this will help the syncros work better and hopefully change gears smoother good luck ...

[DAS KAMU]

If it is every gear I would say change the oil to a lighter weight oil this will help the syncros work better and hopefully change gears smoother good luck ...

yeah will do its redline shockproof oil right

[luke james]

Not to sure of redline im not a big believer that an oil can protect against shock in the gearbox but I maybe wrong never blown a gearbox up and ive had some pretty big powered engines and always used castrol if your in Adelaide ring Jamie from JRM Transmissions he would be able to tell you what oil would be best good luck....luke

Edited September 28, 2008 by luke james

[Duncan]

yea I agree - its not that it protects the box better, in fact redline say not to run their oil in synchro boxes because it accelerates wear (too thin). But when the box is already tired it has been shown time and time again to reduce the crunches from worn synchros.

There's no magic product that puts bits of metal back on synchro rings that I've ever heard of

[DAS KAMU]

yea I agree - its not that it protects the box better, in fact redline say not to run their oil in synchro boxes because it accelerates wear (too thin). But when the box is already tired it has been shown time and time again to reduce the crunches from worn synchros.

There's no magic product that puts bits of metal back on synchro rings that I've ever heard of

good points all

ill just go the nissan recomended stuff it seems

or the castrol one

[luke james]

Yeh castrol has always been good in my bearboxes hope it works for you .....

[DAS KAMU]

im either going to use

1.VXM 80

2.fully synthetic GL-4

any reason that 1 is better than the other?

[rev210]

castrol fully synthetic.

[DAS KAMU]

castrol fully synthetic.

just ask for that ?

[rev210]

Castrol Syntrans 75W-85 or Castrol Syntrax 75W-90

[rev210]

If you haven't changed your diff oil do that now too.

Diff = Castrol SAF-XA

[DAS KAMU]

cool good stuff

75 w - 85 75 w - 90

which is better?

diff will do also

cheers