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Cvt Extroid (lloyd, Toroidal) 8-speed Gear Box Overheating & Servicing On 350gt-8 (pv35) Sedan

PaulReeves.com - GPOWER.TV
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sonicii Veteran

sonicii

Posted
Posted

My car was incorrectly listed as CVT at the auctions. Nameplate showed AT.F4

Interesting, the CVT was only available on the 350GT sedan, and the 4sp auto only on the 250GT I believe.

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scotty nm35
scotty nm35

The early CVT's had only one drum in the fluid, which meant the higher drum wore quickly if the fluid was old or the fluid level was low. The newer CVT's, both drums are in the fluid, which makes them

Nightcrawler
Nightcrawler

Sorry to tell you, but the GT8 CVT box is widely considered one of the biggest ever mistakes by Nissan. Once you break it (which doesn't sound far off), there is NO-ONE that can fix it. Many cars have

sonicii
sonicii

Sure.. I was just referring to the V35 though.. the only V35 the CVT was available in was the 350GT sedan. Even then it was an option, the 5AT was also available.

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Leroy Peterson Grand Master

Leroy Peterson

Posted
Posted

Interesting, the CVT was only available on the 350GT sedan, and the 4sp auto only on the 250GT I believe.

incorrect. it also featured in the Y34 cedrics and glorias.

300Ultima-Z - Gloria: CVT, VQ30DET

300LX VIP-Z, 300LV-Z - Cedric: CVT, VQ30DET

ive been gathering further info here: http://www.zeitakuvip.com/showthread.php?110-Nissan-model-information-and-optionals

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sonicii Veteran

sonicii

Posted
Posted

Sure.. I was just referring to the V35 though.. the only V35 the CVT was available in was the 350GT sedan. Even then it was an option, the 5AT was also available.

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PaulReeves.com - GPOWER.TV Community Regular

PaulReeves.com - GPOWER.TV

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As if its not an 8pd!!!

RE0R04A on my placard...

So I am just gliding the other 3 gears when I reach 5th gear with the paddle shifts am I??? Lol

mycarhasposessedme Community Regular

mycarhasposessedme

Posted
Posted

I'd love to drag your 370GT from 30km rolling start @ Central Coast!!!

So,,,,please enlighten me as to what you're trying to prove with this statement.

No, on second thoughts don't bother, you'd just hammer me with your razor sharp wit.

Have you ever thought about enrolling in a Tafe course to help you understand cars a bit better?

Seriously, you'd probably find it pretty helpful.

PaulReeves.com - GPOWER.TV Community Regular

PaulReeves.com - GPOWER.TV

Posted
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You learn crap all at TAFE!

My mechanic said so!

The only thing I haven't worked on is rebuilding botton/top of the block or gear boxes.

Well if its stock, let us have a go one Wednesday night at Sydney Motorsport Park at the Drags!!!

sonicii Veteran

sonicii

Posted
Posted

Nameplate?

Is that the placard in the engine bay?

Yep.. the plate in the engine bay on the drivers side. it will tell you the VIN, engine number, transmission type, final drive type, paint code and interior colour (and a few other things).

Also worth noting CVTs don't have gears.. the '8 speeds' are just computer programmed ratios it uses in manual mode, theoretically, a TCU reprogram and it will become a 12speed, or 3 speed, or whatever you like. In 'D' it has a near infinite number of ratios it can use.

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PaulReeves.com - GPOWER.TV Community Regular

PaulReeves.com - GPOWER.TV

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That's an insight!

In reality you're saying a tuner would be able to tune it to have 12 Speeds? Lol

Sounds a bit far fetched! But you sound like you know your thing Greg :)

Not like Trevor, he just got hate on me for a stupid no known reason..

I haven't even had the car for 12 months & still learning about it.

PN-Mad Grand Master

PN-Mad

Posted
Posted

You can have 50 speeds if you can find someone that knows how to reprogram it...

But in reality, you are just sitting on a time bomb. Especially if you are going to take the car to the track.

Have a read of this, educate yourself, and see how this gearbox differs from every other belt/chain CVTs

http://www.carbibles.com/transmission_bible_pg3.html

nickcorr Proficient

nickcorr

Posted
Posted

It is an amazing transmission, and years ahead of its time...

However there were some massive limitations with it, and in the end Nissan/JATCO could not justify the development and went the more conventional route and now make quite a good living, thank you very much, selling their CVTs to pretty much every single volume car maker...

I belive that there was a prototype Williams F1 car, from the Damon Hill era, that was fitted with a CVT transmission and some mental motor with an insanely narrow power band which would have been unbeatable had F1 not insisted that cars had to have stepped gears...

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PaulReeves.com - GPOWER.TV Community Regular

PaulReeves.com - GPOWER.TV

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Awesome read Alex :)

No stupid rubber belt inside the box like Altima/Maxima & other low life crap out there!

"This type of infinitely adjustable Toroidal CVT can deal with very high torque figures and can be stacked up end-to-end to provide other gearing options, and is essentially how the system in some of the JDM & Nissan home-market and CVT gearboxes work!"

Game, set, match :)

Just needs a larger oil cooler preferrably with a temperature sensor & gauge to monitor when its getting put through its paces at the track.

Otherwise if it were broken, I'd be getting the gears jumping up & down when I drive it now!!!

sonicii Veteran

sonicii

Posted
Posted

It is an amazing transmission, and years ahead of its time...

However there were some massive limitations with it, and in the end Nissan/JATCO could not justify the development and went the more conventional route and now make quite a good living, thank you very much, selling their CVTs to pretty much every single volume car maker

I don't think this toroidal roller cvt, or a version of it, is used by anyone anywhere anymore. It was only suitable for RWD setups and didn't have the market to justify R&D costs to continue development. Plenty of xtronic (pushbelt) cvts used by Nissan and sold to other car makers, they seem to have them sorted fairly well now, they are reliable, and fluid price is coming down. About the only thing they battle with now is customer perception.. A lot of people don't like CVTs just because they are CVTs and don't have 'gear changes' like they are used to. For high power vehicles, multi speed standard autos are still the way to go, old technology, but it has been around for a long time and everyone knows how to build them.

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PaulReeves.com - GPOWER.TV Community Regular

PaulReeves.com - GPOWER.TV

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To me it sounds like the people who never ran this gear box are speculating about its worthiness.

Only me, Nick & Justin from Nagoya Motors say its the bomb.

Not sure if Nick ran one, but Justin & I definitely have! ;)

Can anyone suggest an aftermarket workshop (anywhere in Australia) who deals with these cars please???

-Transmission Oil Cooler Upgrade with temperature sensor & gauge for monitoring is required...

Edited by PaulReeves.com - GPOWER.TV
sonicii Veteran

sonicii

Posted
Posted

To me it sounds like the people who never ran this gear box are speculating about its worthiness.

Only me, Nick & Justin from Nagoya Motors say its the bomb.

Not sure if Nick ran one, but Justin & I definitely!

Can anyone suggest an aftermarket workshop (anywhere in Australia) who deals with these cars please???.

I don't think there is anything particularly 'bad' about these transmissions, the issues arise when you need any repairs done!!

I'm fairly sure someone mentioned MV Automatics in Adelaide back on the first page too?

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