crucnh, notchy etc. manual transmission
 

got my z new tranny and still notchy. wondering if this iis a natural characteristic of a Z manual transmission. anyone have this problem too? i have 09 sports package 6MT. 40k miles

Its normal, but if the car doesn't have redline transmission oil in it, i do recommend it using nissan recommended weight.

its like its going to grind if shift below 2500rpm. normal?

Yeah it can be like that in low rpm and it's worse when it's cold. Just pull it up to around 3k before shift. After it warms up it should be a little smoother.

I don't know if that is normal. It is very cold here in Chicago and other than having a little trouble getting 1st gear when I first start driving on a cold day, I don't have any problems in other gears. Revs don't seem to affect it and I have OEM transmission oil.

It's something you get used to. I have crunches and clunks when its cold and I live in Florida. Unless I'm starting it up when its 80-90 degrees out, it takes a few minutes to smooth out. Shift around 3k.

My shifts are always notchy. Got a 2014, although my tranny has about 2k on it now.


-Raj

whats up with this transmissions? crunch notch on 1st 2nd and 3rd gear. i feel uneasy going into gears.

Change the fluid and get a weighted shift knob, it will make a huge difference.

I am getting a TK knob from Depointfive0 soon but changing fluids I haven't decided on. Many say do it and many say don't


-Raj

Who is saying switching to good synthetic fluid is a bad thing?

what do u recommend for weighted shift knob, brand and how much weight?

On some threads on here there are reviews for switching to redline fluid for the tranny. Some people posts they like it and others didn't because it made the gearbox worse. Some said they went back to oem. I don't have time at the moment to post a link, but I can tonight.


-Raj

crucnh, notchy etc. manual transmission
 

Blox is a good brand, TWM is also another good brand, fatboy, this is a replica TK, and a weighted Nismo knob should be all better than stock as in weight.


-Raj

ive read that this tranny fluids are only good for some time then it goes back to being crunchy/notchy feeling when shifting. i dont know how true that is

thanks bro

I switched to Redline MT-85 and have had it in there for probably 20,000 miles and it hasn't degraded over time at all. I noticed it helped a little but its no miracle worker. I'm approaching 60k miles so I'll be re-using Redline MT-85. I believe in it. No tracking or autox for me just spirited DD and hard pulls. It's noisey, its clunky, and its normal.

If ur grinding gears that baad in 1st, u might have bad synchronos.

I highly suggest redline synthetic fluid, and weightened shift knob, dont buy the short shifter yet, its bad in 1st.

I was grinding with my old transmission. Nissan replaced under warranty for me. It might've been bad synchros, I'm not really sure.


-Raj

How does a weighted shift knob help the shifting?

The added momentum helps get the car in gear. Trust me, it made a bigger difference then I thought it would.

But it seems hard to find one that looks similar to the stock shift knob (who's shape is perfect for me), The pokeballs and skulls and pistons seem a little juvenile to me and rob the Z of some sexiness.

http://www.the370z.com/body-interior...ift-knobs.html

http://www.the370z.com/members/joepr...pc-anvil-2.jpg

great knobs, and yes redline fluid is the best in these trannys, and they suck cold.

Lots of knobs if not most do not have that. Here is mine. Way sexier then stock imo but thats all a personal choice.


http://i62.tinypic.com/2m7yfxx.jpg

I have the weighted shift knob, yes it does help, there are allot of them on the market here in USA and they r cheap just make sure it isn't titanium.

If u want one that looks like stock am afraid ur sol, but the weightened usually looks like a mushroom.

Is the JDM password type II shift knob considered a weighted one?

I use Amsoil GL4 75w90 fluid. It works well. Before this I would use Mobil 1 Synthetic 75w90. The notchy shifting you feel is due to the shifter linkage and bushings. It's normal. You just need some practice.

I hope you're kidding... that thing weighs a ton.

Oh, and if a transmission is crunchy AND notchy... does that make it a crotchy tranny ?

:eek:

You're not alone. I had the same issue, changed oil to redline MT-85 and it still did the same thing. Turns out the problem was me. I got used to the transmission and now it shifts like butter.

Put Amsoil tranny fluid in and it will be 100% better. I have used in my Jag and 350z and 370z and it was night and day. I actually had issue putting the shifter into 1st gear when i bought my Jag it was so bad and after the flush and change to Amsoil all gears felt perfect and were good for 50k miles on the same fluid and then i sold it.

Yeah, I don't get all the concern about the Z's gearbox. I think it's fine. I've probably had over 20 different manual cars and the Z has one of the easier shifting gearboxes. Sure, it is not as buttery smooth as my BMW was, but it seems fine to me. Maybe I just got a good one.

ok weighted shift knob. for fluid, amsoil or redline?

I've read all the mixed opinions on transmission fluid. Some say redline is very good some say it's crap. Others suggest to stay with OEM. And there is something to do with the thickness and temperature. And why there hasn't so many people tried Motul Gear 300 yet? Is it not good?

I love the gearbox and shifter. Wouldn't change a thing on it. The clutch feel took a little longer than usual to get used to but I'm about 5 months into ownership and it's like any other manual car now.

took my Z to the dealership because second was crunchy when cold and they are replacing it under warranty. i also bought a z1 clutch so that means free clutch install!

i had stock oil from 0 to 15k, then switched to redline from 15k to 35k, then the motul from 35k to 50k. i feel like both redline and motul felt better when the fluid was put in, but over time it went to how it felt when i had stock oil. i'll probably go back to motul when i get my car next week. i also have it in the diff.