I am sure to get alot of hate posts after this question about my driving habits.


I really enjoy putting the pedal to the metal. When merging on a highway, or exiting the EZ-Pass (25 speed limit thing... damn NJ) I love to almost max out my lower gears.


So lets say I'm in second, I almost reach to redline and go to 3rd, almost go to redline and go to 4th. While in fourth going about 80mph I then shift to 6th. Yes I skip 5th.


Is this wrong? I mean the whole point of a manual is that you control the gears.

Anyways, when going from 4th to 6th I heard this extremely loud gear gring. Ever since it started happening I stopped shifting from 4th to 6th. But my question is, is it my fault that this is happening? Or are the syncro's bad or w/e.

If I go to my dealer and tell them about this, will/can they say your warranty does not cover this cuase you shift from 4th to 6th? Or something along the lines or that?

 

First of all ---Whats the sense ? Second of all, and Id have to look at the Z Trans configuration, There may be a 1-2, 3-4, 5-6 Gear cluster set up and if so, 4-6 dosent kick in the 5-6 cluster sychros. Matters Not, if you shift 4-N-ease into 6. But back to the point ---Whats the sense.

I believe that 80% of the Z Trans "Failures" are fukcin around with trying to be different by "new" MT owners

My 2 cents

 

And you are correct. But the Key Word is "Controling" the gears not just ranomly shifting without having experience and a working knowledge of whats going on in that Mystery Box connected to your shifter. Preferably Both

 

Mystery box....I freaking love it.

 

Question: When you are driving on the highway at 50+mph, push in the clutch peddle and shift from 4 to 6 and back (with the peddle in all the time), DOES IT GRIND? Then try this from 5 to 6 and back to 5 (again, with the clutch peddle in the whole time), does it grind?

If it does grind, you have a bad synchro (or two). If the car is less than 60 months old and less than 60,000 miles, the warranty will cover it. Go to a dealer and show them the problem. Be sure to ask for the 009 version replacement tranny.

 

yes if i shift from 4-6 and then go back to 4.. and then shift to 6 agian the grind happens again...

 

Stop skipping gears.

 

always go through the gears that are "on the way" to where you're tryign to put it. you know about gear ratios and all that right, well you are making that one final gear synchro do much more then it wants. especially since 3/4 and 5/6 are on different shaft

 

If Nissan had engineered this transmission correctly, it shouldn't matter if he shifts from 4 to 6.

The manual tranny that Nissan put in the -Z- is a piece of crap.

 

I know. I try to shift from 1st to 6th and it grinds. That's Nissan's fault.

 

Sometimes I get a grind is I downshift from 3rd to Reverse. Its annoying

 

I couldn`t agree with you more. The Z32 manual tranny is the same. I`m getting ready to be on my 4th manual tranny,and my car has only 58k miles. I`m on my 2nd (what Nissan called the 98+ spec manual trannsmission) unit. The first new replacement tranny had unbearable input shaft noise and 1st to 2nd gear grind immediately upon install (the Nissan dealer who did the install for me even said it was a piece of junk tranny and got me a 2nd unit under warranty). The 2nd one has the same input shaft rattle and has the 1st to 2nd gear grind (which was intermittent,but now more frequent). He said if at anytime I`m unsatisfied,just be sure and come back while it`s still under warranty. Just poor quality control.

But just like you said,no matter what gears he`s shifting into,a properly functioning manual transmission should never grind or rattle. I talked to an engineer at Tremec (they bought Borg Warner`s transmission line) and he said there should never be any rattle or grinding whatsoever in a properly functioning manual transmission.

 

Odd that my '03, that I drive into the ground, has 65,000 miles and the original tranny that is perfect----Oh BTW, I changed the fluid last month for the first time to Motul. I was in a Giving Mood

If I could just get that afore mentioned 3rd to reverse grind out of there

 

What a coincidence.

I have the same problem going from sixth to first. Should I double-clutch, triple-clutch or heel and toe?

 

You need to take it back to Nissan and explain to them that they need a sixth-to-first synchro with a 15k rpm tolerance or you're going to lemon law them.