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Nervous newbie with a crunching gearbox


phil wel

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Hi guys

 

I'm a new comer to the world of the z and only bought my 52 Import a couple of weeks ago.

 

I have a major problem getting 3rd (both from 2nd and down shift from other gears) to the point at anything over 4K from second it crunches horribly.

 

Anyone heard of anything similar? My greatest fear is a new 'box but I have a 3 month warranty on the car.

 

Thanks

 

Phil Wel

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I occasionally get a crunch into 3rd from 4th (and also into 5th from 6th) at medium revs.

 

I began to worry about the box, but it seems to only happen on selected days. I'm suspicious that when I'm in a hurry and stress levels aren't low I'm not concentrating enough on the change and may not be de-pressing the clutch enough.

 

A bit worrying but I've got a longer warranty to worry about it and work it out.

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This sounds very much like one of 2 things: -

 

1. The clutch is just dragging a bit and not fully disengaging

 

2. The Syncromesh is worn.

 

My daughters Renault Megane gearbox had this, and it always crunched when changing down at higher revs from 4th to 3rd. Basically the worn syncro could not cope. If the revs were lower it was fine.

 

1) may go away with usuage and a bit of hammer on the clutch. 2) is repearable by a specialist and not necessarily a new gearbox.

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52 import sounds like an early model. According to my350z posters, the 350Z is now on its 7th revision of gearbox! :headhurt:

 

Sounds a bit ominous !!

 

Thanks for the advice guys. I'll have a go at hammering the clutch (i'm probably just being a bit weak :blush: ) Short of that I'll probably go and visit my local nissan dealer !!!

 

Cheers

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Read into that what you will about the 7th revision though. It could mean anything from using different materials, improved manufacturing process to fixing gremlins. Suffice to say, the gearbox on the Z isn't a weak link.

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52 import sounds like an early model. According to my350z posters, the 350Z is now on its 7th revision of gearbox! :headhurt:

 

Sounds a bit ominous !!

 

Thanks for the advice guys. I'll have a go at hammering the clutch (i'm probably just being a bit weak :blush: ) Short of that I'll probably go and visit my local nissan dealer !!!

 

Cheers

 

Your Nissan dealer are unlikely to be able to fix it. They might help with diagnosing the problem. If it is something internal to the gearbox, you are probably better at a Gearbox specialist.

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As Kev said it sounds like your synchromesh.

 

I had my 'box replaced after 3rd to 5th and 4th to 5th changes started being really stiff and grinding!!

 

Get ready for a BIG bill if you're going to a dealer :thumbdown:

 

did they do it under warranty with no fuss? that would be a first :teeth:

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As Kev said it sounds like your synchromesh.

 

I had my 'box replaced after 3rd to 5th and 4th to 5th changes started being really stiff and grinding!!

 

Get ready for a BIG bill if you're going to a dealer :thumbdown:

 

did they do it under warranty with no fuss? that would be a first :teeth:

 

Yeah they did it under warranty,but took so long that I asked how much it was just to buy a new one.The quote I was given gave me a little more patience ;)

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