hndumafia

iTrader: (10)

Seems like 5th gear is toast for me (and 6th is useless at the track..). The transmission seems to grind anytime i am shifting into 5th at any decent pace. I initially ordered some new transmission fluid thinking it might help, but the more I think about it, I assume it must just be the synchro going bad. I am pretty sure my transmission is not a CD009 since it was replaced way back in the day like 2004.

So my question is, is it worth trying to change the fluid, or should I be looking for a new transmission?

0jiggy0

iTrader: (13)

Takes minutes to change the fluid. Might be a synchro but a fluid change is cheap and easy. Give it a shot.

hndumafia

iTrader: (10)

thanks jiggy. that answer is so reasonable, i hate that i even asked.

dkmura

iTrader: (64)

Hopefully, you're using Redline MT85 for the tranny fluid change.

terrasmak

iTrader: (8)

Don't waste your cash on the fluid , you need a rebuild.

davidv

iTrader: (2)

Transmission fluid is going to fix a broken transmission?

white boy

yea, new tranny or rebuild is needed

reserved

iTrader: (18)

Welcome to the club. Unfortunately, its not exactly exclusive!!!!!!!!!!!

hndumafia

iTrader: (10)

maybe old transmission isn't providing the needed lubrication for shifting gears? I don't really know what the extreme consequence of old/bad/worn fluid would be. It seemed a stretch since it's for only one gear, but I was hopeful!


I don't know much (anything) about rebuilding a transmission. Is this a viable option? I know the synchros are crap. Can a bad one just be replaced? Would it be much less expensive to rebuild versus buying a new one (and installing myself)?

terrasmak

iTrader: (8)

Sorry bro, just doesn't work like that. You need to rebuild.

DivZero

iTrader: (1)

News trans can be found pretty cheap online. Whether that is cheaper and more durable than a rebuild probably depends on how labor rates and competent shop availability in your area.

About the redline MT fluid... I get better results from conventional transmission oil.. as do many when it comes to our specific transmission. I ended up buying Ford Motorcraft® SAE 75W-90 API GL-4 Gear Oil from a Ford dealer as it is much cheaper than Nissan's and seems to be higher rated from some online research.
http://www.fordparts.com/Products/Ch...ionFluids.aspx

guitman32

iTrader: (15)

Whats up Rajjjjj!

Im so amazed at how humble you are asking these questions, people are gonna think youre a newb and not passing vettes at the track, LOL!

New vs rebuild I say go new...even if it was feasible monetarily I HIGHLY doubt I would trust the tech enough to get it done and make the work stick. But then again you know how I am with trusting people to touch my car.

guitman32

iTrader: (15)

Oh and I like how you added the e92 to your sig...diiiickkk!!!!

hndumafia

iTrader: (10)

Hi guys. I'd appreciate some advice regarding the transmission replacement.

I'm stuck between two options, new or used. I've found someone local selling a CD009 with approx 50k miles. Seller claims it was working in perfect condition with no grinding when it was removed. The cost is only $400. The other option is to go with a new transmission which I can get for ~$1800. Obviously this option should have no problems, and I will know that it hasn't been abused yet.

The savings of the used is pretty significant. But at the same time, I don't really plan on selling the Z anytime soon, and prefer to only have to do this job once. Spending nearly 20% of the current value of the car seems crazy though. I am back and forth in my mind.

The Z is only driven to and from track (hpde) events now. Either way, I will probably replace the clutch as well since it's pretty inexpensive.

Is there anything else i should consider replacing while doing this job?

davidv

iTrader: (2)

Then the seller will give you a written money-back guarantee? Say 50,000 miles?

hndumafia

iTrader: (10)

Let's say yes about a money back guarantee but not 50,000 miles. At the current pace that would be more than 10 years anyway.

hndumafia

iTrader: (10)

No opinions? Has everyone just sucked it up and bought a new transmission when they have had issues?

dkmura

iTrader: (64)

If you trust the seller, than go with the used tranny. I'd fill it with Redline MT85 and also replace the clutch slave at the same time.

hndumafia

iTrader: (10)

thanks you, the redline is ready to go, and i will look into the clutch slave as well.