Rb26 Gearbox Rebuild

[DVS JEZ]

hey guys, long story short, got another R32 GTR with a supposedly rebuilt gearbox 8000ks ago, having alot of trouble getting into 2nd gear, also down shifting to 1st gear,

i have tried redline lightweight shock proof, tried adjusting clutch, etc etc.

gonna drop the box and pull it down to replace the synchro's, i need to know if anyone has done this and any tips or part numbers,

if any special service tools are needed.

i have rebuilt gearboxes when i used to work at mazda but never done any nissan boxes.

cheers guys

Jez

[Jaydo34]

Any luck with that mate?? I'm looking at a gearbox rebuild. 4th gear synchro is rooted:-S I don't know what the best option is. I got just under 250kw atw at 12pound. I need a new clutch coz it slipping but wonder if i should just do my clutch or do the gearbox/clutch all at once:-( what do you think mate?

cheers,jaydo

[DVS JEZ]

i ended up getting a 2nd hand box for $600, i just used that and its still running sweet. you can get exchange boxes off ebay, but NO warranty if your car is not 100% stock.

ps your car looks like mine

[Deano 1]

do em both at once man, dont bother pulling it out unless you got a new clutch too. Once u drop a gtr box out, your not goin to want to have to it again for atleast a little while...

[tricstar]

mate, I can highly recommend Competition gearboxes in Croydon, very honest guy ( can't remember guys names, got his details at work if you want) but I sent him my box from Perth, new syncros, bearings, replaced the carrier folk ( or whatever its called) ... he gave me a discount because I sent him 3 boxes ( 2 stuffed with smashed gears and more) let him keep the leftovers and he only charged me $500... he said if I just sent him my box and nothing else it would only be about $800 for new syncros and bearings and inspect everything..

don't know why you'd spend $600 on an unknown box, could have stuffed syncros also..

and yeah definately do clutch while you have the box out.

my 2c worth

[CeJay]

If you interested in getting a rebuild talk to award diff and gearbox in Seven hills (sydney) just dont ever ever trust nissan spare parts when ordering shit though.

[tricstar]

If you interested in getting a rebuild talk to award diff and gearbox in Seven hills (sydney) just dont ever ever trust nissan spare parts when ordering shit though.

yeah Terry from Award diff and gearbox, knows this shit inside out, he just helped me heaps with my OS-giken front 2-way, couldn't do enough....both good, Competition & Award

[PJ.]

Take the synchro's off the parts list and replace them with a PPG dog gear set

[Jaydo34]

mate, I can highly recommend Competition gearboxes in Croydon, very honest guy ( can't remember guys names, got his details at work if you want) but I sent him my box from Perth, new syncros, bearings, replaced the carrier folk ( or whatever its called) ... he gave me a discount because I sent him 3 boxes ( 2 stuffed with smashed gears and more) let him keep the leftovers and he only charged me $500... he said if I just sent him my box and nothing else it would only be about $800 for new syncros and bearings and inspect everything..

don't know why you'd spend $600 on an unknown box, could have stuffed syncros also..

and yeah definately do clutch while you have the box out.

my 2c worth

sounds good!

[Proximity Motorsport]

Just word of mouth here but it makes sense... If you have the syncros bead blasted (not sand blasted) then smoothe pitting makes them a bit grippy then standard so they grab eachother.

[Spurdo]

Just word of mouth here but it makes sense... If you have the syncros bead blasted (not sand blasted) then smoothe pitting makes them a bit grippy then standard so they grab eachother.

have you actually done this? and if it works to any extent, to my mind it cant be likely to last anywhere as long as new synchros.

if the problem with the synchros is that they just have a glazed surface and therefore getting slippery then yeah IMO this could be feasible. but i've also heard of guys just using a lapping paste to make a similar effect (similar to what you do to valve seats).. but only when the problem is due to the surface being glazed. if the baulk ring is actually able to move far enough to touch the surface of the other, then im pretty sure thats a throwaway. that was the case with some of mine, they then became sinkers on my fishing line

[Proximity Motorsport]

nah I have never done it but I know someone who did it to his box while it was apart, and he said it worked well

[djr81]

If you are getting the box rebuilt it would pay you to make sure the selector forks are in good condition.