DC2R Gearbox

[HondaGee]

Hey guys,
Just got my clutch replaced this afternoon and started to notice that when I shift at 4200 rpm and above from third to fourth it tends to crunch a little, but still goes in :s Can you guys please help me on this really worried.
Thanks !!

[u mad?]

so it only crunches at 4200? so it wont crunch at 4500?

doesnt crunch any other gear?

[HondaGee]

Na 4200 and above sorry I didn't mention that. And no actually it doesn't :s

[Vvvtec]

Did you bleed the clutch totally? And what transmission fluid is now in the box?

[HondaGee]

Bot sure to tell you the truth I gave it in to a well known mechanic of Honda's but also does other cars.

[Vvvtec]

It definitely didn't do this before the new clutch?

[HondaGee]

Ye man 90% sure

[mocchi]

def try bleed theclutch

[HondaGee]

Arighht man thanks I'll try. What if it still does it after I bleed it?

[Super-DA9]

Arighht man thanks I'll try. What if it still does it after I bleed it?

If the clutch is operating properly then it is likely that you may have a worn out synchro.

The other question that should be asked is what gearbox oil were you using prior to the clutch change? And what oil is in there now?

[HondaGee]

Ye I'm guessing it's a synchro but I hope not haha. How much will it cost to get that repaired. And Ye I'll find out the next time I go for my tune.

[Super-DA9]

Ye I'm guessing it's a synchro but I hope not haha. How much will it cost to get that repaired. And Ye I'll find out the next time I go for my tune.

No point asking the forum this. We aren't doing the work. Check with the shop you choose.

Neat gearboxes and JDMyard both do rebuilds for honda, not sure where you are located though.

The reason I ask about the oil is that some oils are capable of assisting with worn synchros, and also simply having the wrong type of oil in there can cause a crunch. I say find out about this first before sighting out rebuild options.

[HondaGee]

Okay thanks buddy much appreciated, I'll update you guys on what's happening... The cars weird man just today it stopped crunching and yesterday it was crunching 3rd gear while I was engaged in vtec, and it stopped half way through the day :L

[dougie_504]

Sounds to me like there was air in your hydraulic lines preventing the clutch from disengaging properly so you weren't fully 'clutched in' when changing gears. Possibly the air bubble has been pushed out into your reservoir now.

Check your clutch master cylinder (google it) and see how much BRAKE fluid is in there and if it needs a top up.


Also, were you in VTEC at 4,200 RPM shifting into 3rd? What do you mean by 'engaged in VTEC' that could be a range of 3,000 RPM and gives us no idea how hard your gears are spinning.

[stndrd]

My first question is why are you shifting at high loads/rpm with a brand new clutch? All clutch's require 1000km of bedding in before thrashing, otherwise you throw your warranty out the door.

Back to what you were asking about with the crunching. I would be suspecting you are trying to shift too quickly when cold while you are still bedding the clutch in. If it happens constantly, I would be more inclined to say it is a synchro and possibly the 3rd/4th gear slider.

Until we know what oil has been used, it is hard to say much more.

[HondaGee]

Ye guys sorry for the late one but just went to my mechanic yesterday and found out that he has put in 80-90 oil in there, I also told him about my crunching he said it may be my 3rf and 4th synchros, he also said that just for labour it is costing one grand without parts just pulling it out stripping it putting it back together and back onto car... What's your opinon guys? If you know a cheaper and better place please do let me know.
Cheers.

[cbauto]

Byp do gearbox rebuilds.

[dc2screama]

Yep cheaper and better..

[mocchi]

shit 1k for labor lol
thats alot

pm cbauto, they can do it for alot cheaper and knows what gearbox oil to put 75-80.

[stndrd]

HondaGee if you are in Melb give me a call. Can do a lot cheaper than that for gbox rebuild. Otherwise call James @ Extreme Project World if you are located in Sydney

[u mad?]

pull box out and send to neat gearboxs

[chez00]

http://www.ozhonda.com/forum/showthread.php?174206-Gearbox-Rebuild-Packages-B-and-K

Happy to help out.

cheers for the plug u mad?

[mocchi]

http://www.ozhonda.com/forum/showthread.php?174206-Gearbox-Rebuild-Packages-B-and-K

Happy to help out.

cheers for the plug u mad?

no problem mate.
glad i help abit.

http://www.ozhonda.com/forum/customavatars/avatar28865_11.gif

[HondaGee]

Thanks guys all for your help much appreciated, well I think the only thing to do right now is wait till it gets worse :L what can I say it's the ugly truth

[u mad?]

Yeah i can see where you are coming from, but leaving it until it gets worse may damage parts that you might not have had to if you pulled the box apart in its early stage.

[ceekay101]

^This. Yours doesn't sound that bad. Is it crunching everytime you shift to fourth or intermittently? If intermittently id do a flush of gearbox fluid. Chuck in oem with a small tube of the nulon gearbox additive. It takes a few hundred kilometers to work its magic. Did it for a mate who had an intermittent crunch going into third and this worked a treat. By no means is this a fix but it most certainly helps.

[Super-DA9]

The additive is called Nulon G70. Try premixing 125ml with your choice of gearbox oil. It really helps to fix crunches.

[HondaGee]

Hmm I would go with what you said but a bit short on cash man spewing :/ @u mad?
@super-da9 and ceekay101, also got told to add that in hence it's is like magic on the short term but on the long run tends to thicken up and get into bearings and all that other complicated stuff.

[ceekay101]

Bearings should be getting replaced during rebuild anyway.

The cheap option is to put the additive in now but your not even sure what fluid your running. Honda mtf plus the additive is the best combo in my opinion. But I also had decent results with vmx 80 plus the additive.

[HondaGee]

Ahhk thanks for the heads up, man all I remember ( the definitiong of fish brain is me) the guy telling me he's using 80-90 gearbox oil.

[amant02]

Thats very thick. from last I remember b series box's loved 75-90? or was it 75-80.

As others have said. bleed and swap the oils at home. See if it makes if it makes a diff before even thinking about a rebuild.

I would do the slys and sell of the gearbox and buy a reconditioned box.

Sell gearbox since its crunching maybe get $700 - 900 for it. Re conditioned one goes for 1.7k so thats ~1k out of pocket still. But she would be newer I hope for you.

[u mad?]

Dunno why anyone would just sell up and buy another box, what if ur new 'reconditioned' box (lol haven't we heard that one before) was as bad or even worse then your current box?

Even though the initial outlay will be more for a rebuild (well, depends how much damage there is) you will be better off in the long run and you have a fresh gearbox.

But before you get too far ahead of yourself, bleed your system and try another (and correct viscosity) g/b fluid.

[amant02]

Dunno why anyone would just sell up and buy another box, what if ur new 'reconditioned' box (lol haven't we heard that one before) was as bad or even worse then your current box?

Even though the initial outlay will be more for a rebuild (well, depends how much damage there is) you will be better off in the long run and you have a fresh gearbox.

But before you get too far ahead of yourself, bleed your system and try another (and correct viscosity) g/b fluid.

Seeing how 2nd hand itr box's going for 1k, re conded one for $1750 is pretty good.


http://www.ozhonda.com/forum/showthread.php?172538-Honda-Engines-and-Gearboxes-For-Sale-New-amp-Used.

[cbauto]

Seeing how 2nd hand itr box's going for 1k, re conded one for $1750 is pretty good.


http://www.ozhonda.com/forum/showthread.php?172538-Honda-Engines-and-Gearboxes-For-Sale-New-amp-Used.

How do you know reco box is reco?

[HondaGee]

Arghh so many people saying so many different things on g/b oil don't know which one to go with !
If I do end up doing something with my box it reconditioning it and not buying a recayed one or anything I'm staying with my box can't trust people these days...(in not talking in specific don't get me wrong guys because of personal experience I had stayed that)

[u mad?]

drain ur current gearbox oil

put some honda mtf (go to honda and buy it, ask for manual gearbox oil)

If crunch persists maybe try what super-da9 has suggested with the additive.

[Daveho1]

g70 is good and its cheap. just fukn do it. small tube g70 and honda MTF mmmk?

[HondaGee]

Hahaha arghh so tempting, I'm so lost I'll think I'll try Honda mtg oil though sounds safe IMO