Crunching In Second, Hard To Shift When Cold

[kma]

My gearbox was crunching into second, doing a bit of research i found that an oil change helped ppl alot.

So i change my oil to castol epx8090, didnt really help.

When cold its hard to change into second, as in the gear stick is hard to push in. This is only when cold, with the old oil it was fine.

I guessing my box is worn? but is there any additive or even another oil change you can recommend?

[interfooler]

Sounds like a 2nd gear synchro is on its way out. Oil change won't help you will need to replace the 2nd gear synhros.

[Moodles2]

I'm not recommending it, though I read people add the Nulon G70/G90 (not sure on the model) additive when changing their gearbox fluid. Since you don't have a GTR and no transfer case, you could add it through the shifter instead of taking the filler plug off the side of the transmission.

[kma]

replacing synchros is pretty much a rebuild right?

[Birds]

Reco, and yes if you want to do it properly you get it reconditioned. Once you crack open a box and start replacing parts you upset tolerances and other parts.

[Chibs]

this is happening in my 5th.... Whats the damage on a reco

[Guest baby34]

Try Redline Lightproof, has worked wonders for a few people.. but will only prospone your gearbox's death.

[Ten Four]

Redline shockproof. Fixed mates 33gtr crunch into 5th.

Can't recommend it more.

[turboedsloth]

A recon price varies on how much you want fixed, if you only want 1 sychro fixed you get charged for one synchro, you get more replaced you get charged more. All depends on what is found when your reconditioner pulls the unit apart. Could be 1k could be more

[Fantm1]

My R33 GTR also has the occasional crunch into 5th gear. Why fifth?

[Spurdo]

My R33 GTR also has the occasional crunch into 5th gear. Why fifth?

just the way it goes sometimes. it is odd though, the synchro mesh on 5th doesnt usually get anywhere near the thrashing that 2nd-3rd-4th does. although i used to have the same issue but it turned out my clutch fluid just needed to be bled, lol. not sure why it only affected 5th.

just change the box oil to redline shockproof, see if that helps

[Fantm1]

Thanks for the response. I have already changed the oil since I posted my issue. It hasn't crunched since I put it in. I used shockproof light. It had also crunched on one or two other gears, but it was just the odd one. I checked my brake fluid and the level is ok. Even if there was a bit of air in the system by the time you get to 5th, it's been pumped a few times. It should really be crunching when selecting first after being stationary out of gear. or cruising for a while before a gear change. I'm hoping this Redline (smurfs blood) has solved/covered-up my crunchy problem.

[FarShark]

Just to share, I had a similar symptom on my R32 GTR (77,000km) that lead to a transmission replacement.

I had a crunch in 4th, and eventually developed a crunch in 3rd at high rpms. I switched the fluid (nothing special) in hope that a fresh fluid would help eliminate the crunch but it just made it more prominent.

Anyways, I have yet to find a permanent solution to the synchro issues on the R32 transmission, and it seems like no one has ever found one. I have been reading that even the R33 boxes have similar issues.

I know I am going to have to replace the box again at some point in time.