Gearbox failure - Opinions?

[tyndago]

Don't do a 100 launch control starts. You should be fine. I would suspect the hard parts failures are almost all due to about 100 launch controls.

Something has to give eventually. There will be a fix... will it be disabling launch control ? Reprogramming launch control ? Limiting launches ? Maybe Nissan won't care as they are making money off the broken boxes in many cases, as they will be able to show the car was not under warranty. AKA VDC off.

[R33_GTS-t]

Originally Posted by tyndago

Don't do a 100 launch control starts. You should be fine. I would suspect the hard parts failures are almost all due to about 100 launch controls.

Something has to give eventually. There will be a fix... will it be disabling launch control ? Reprogramming launch control ? Limiting launches ? Maybe Nissan won't care as they are making money off the broken boxes in many cases, as they will be able to show the car was not under warranty. AKA VDC off.

Out of interest, am I wrong in thinking that most stock AWD cars wouldn't fair so well after 100 hard launches? Am I being daft here? I wouldn't even consider 1 with my own car personally.

[tyndago]

Originally Posted by R33_GTS-t

Out of interest, am I wrong in thinking that most stock AWD cars wouldn't fair so well after 100 hard launches? Am I being daft here? I wouldn't even consider 1 with my own car personally.

Heavy car and all wheel drive. Not a lot of give in the driveline, so what breaks ? The transmission.

Rear wheel drive cars don't break too many transmissions. They end up breaking other things, rear ends, axles , etc.

I think even a high hp GT-R may do something similar. Some wheel tramp.... now sitting here thinking about it... probably whats killing them. I have heard the wheels hop on a LC launch. Wheel hop kills lots of things in the rear end.

I snapped a bunch of transmissions in my GMC Typhoon and Syclone. Couple good hard launches and we would kill them.

[mindlessoath]

sticker tires would help reduce wheel hop? im not a drag expert by any means. if it were up to me i would remove launch control all togehther.

[R33_GTS-t]

Turns out the guy in question had done 70+ launches. Do people seriously expect to do this 70 times with no issues:

» Nissan GT-R R35 Launch Control Video - DragTimes.com Drag Racing, Fast Cars, Muscle Cars Blog

[tarmac terror]

Originally Posted by R33_GTS-t

Turns out the guy in question had done 70+ launches. Do people seriously expect to do this 70 times with no issues

Clearly....
I agree with you that its just plain crazy to hard launch a car THAT many times, especially a new car IMHO.

While I wouldnt go so far as to say they deserved a broken 'box I think they are asking for trouble.

TT

[Cornhoolio]

Originally Posted by mindlessoath

sticker tires would help reduce wheel hop? im not a drag expert by any means. if it were up to me i would remove launch control all togehther.

Stickier tyres is the last thing you want in this situatiuon, it will just move all the massive loadings somwhere else along the drive train. The more grip you have on the road the worse the situation will be......................

At least if you have some wheel spin this is power being lost that is not winding up the diff or gearbox somewhere.

Why not put in driveshafts that will sacrificially fail (safely of course)before any of the major components let go, surely that would save a lot of heartache Daft suggestion I now but possibly a relatively simple and inexpensive fix

[johnsy_GTI-R]

if you launch it , it will break. arnt nissan renound for chocolate gearboxes

[Fuzzy]

The GT-R have VSDR(VehicleStatusDataRecorder)
No warranty if you use LC or drive with VDC off


If the gearbox is broken and you can add 1+1 you know what nissan check

[tyndago]

Originally Posted by johnsy_GTI-R

if you launch it , it will break. arnt nissan renound for chocolate gearboxes

Depending on who you believe, and which press release you read , Borg Warner made the gearbox.

[R35-395]

To the guys wondering how to disable the launch control altogether.

I changed the oem suspension to the Mine's Esta II's, the "R" mode for the suspension won't illuminate anymore, I tried the launch control sequence and launch control won't engage.
I emailed Mine's about it and they are aware you lose the launch control once the suspension is changed.
I for one was not concerned about losing it at all.

[tyndago]

Wether or not you want it, you lose it. Nice. Always a good way to go.

[nidge]

It would be nice if Nissan produced a definitive statement re L/C and subsequent warranty. I spoke to my dealer some time earlier this year and they suggested that such a statement was forthcoming.

[Fuzzy]

Originally Posted by nidge

It would be nice if Nissan produced a definitive statement re L/C and subsequent warranty. I spoke to my dealer some time earlier this year and they suggested that such a statement was forthcoming.

Why?

If you read the warranty information from the GT-R guide. You can read you have no warranty

[GT-Racer]

It's hardly descriptive though is it. Does this mean even if you switch if off just once that your entire warranty is null and void. I suspect not. What it means is that you're not covered for any failures WHILST it's off.