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Rb26 Gearbox Rebuild

DVS JEZ
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DVS JEZ Grand Master

DVS JEZ

Posted
Posted

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

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https://www.sau.com.au/forums/topic/306261-rb26-gearbox-rebuild/
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  • 6 months later...
Jaydo34 Apprentice

Jaydo34

Posted
Posted

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

post-57632-1282490770_thumb.jpg

DVS JEZ Grand Master

DVS JEZ

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  • Author
Posted

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 :blush:

tricstar Mentor

tricstar

Posted
Posted

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

tricstar Mentor

tricstar

Posted
Posted
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

  • 3 weeks later...
Jaydo34 Apprentice

Jaydo34

Posted
Posted
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!

  • 4 weeks later...
Proximity Motorsport Experienced

Proximity Motorsport

Posted
Posted

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 Experienced

Spurdo

Posted
Posted
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

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