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Gts4 Manual Box Strength/difference To Gtr Box

Brett_J
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Brett_J Contributor

Brett_J

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Ok guys, just wanting some proper clarification, not what you "think" is true, or what your brothers mates cousin friend told you he heard once.

Is the 32 GTS4 box the same strength wise as the 32 GTR box?
I know they have different ratio's, but have read conflicting info regarding strength, some say weak, some say same internals as GTR box or 25det manual box.

I just want clarification before looking at one as a potential new car.

Cheers
Brett

blind_elk Grand Master

blind_elk

Posted
Posted

FWIW, I have a R32 GTS4 running the RB25DET. It was initially tuned to 180kW at all 4 (factory is only around 115 @ all 4). It still runs the factory gearbox. The box is still fine, no synchro problems, no selection problems.

In my experience, Nissan gearboxes are TOUGH. Some people will tell you "I just broke my 4th box". I have to say they must really be mistreating the box. Treat the box right, ie no 7k-sidestep-the-clutch-launches, it will treat you right.

GTSBoy Grand Master

GTSBoy

Posted
Posted

It is a KNOWN fact that the GTS4 gearbox is basically the same box as the GTR box.

The GTR box is basically the same internals as the other large frame Nissan gearboxes (RB25DET, VG30). It makes sense that they would go to the effort of developing the AWD box for the hi po car based on the existing strong gearbox. It makes absolutely no sense that they would then go and develop another AWD box based on the small frame gearbox (RB20DET) just to put it behind RB20s in GTS4s. Even though the little RB20 wouldn't need the strength, it would make the most sense for them just to bung the strong AWD box they already had behind it.

chez00 Contributor

chez00

Posted
Posted

They are very similar. As a couple of examples, the mainshaft part number is the same between the GTS4 and GTR boxes, but different to the 2wd rb20 boxes. The bearings are the same between the GTR and GTS4 but different to the RB20. These are two indicators that they are of similar strength.

Brett_J Contributor

Brett_J

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Cheers fella's, exactly what I wanted to hear, this has a 25 in it already and a few decent mods, has a rwd switch, so will be using that majority of the time if we get it.
Won't be abusing it, but if my mates can baby their GTR boxes with 500+hp and still have fun, then I'm sure I can manage with 400 :)

tricstar Mentor

tricstar

Posted
Posted

I'd say clutch selection is one of the most important factors in breaking gearboxes... steer clear solid centre clutches and mega clamp singles..

I did like the comment above from someone with all of 180kw that anyone who breaks one "must really be mistreating the box" ?

put decent power through them, with good grip and they're not indestructible.

blind_elk Grand Master

blind_elk

Posted
Posted

That's not a fault of the gearbox. Its like blaming the kettle for blowing up after you took out the 10A circuit breaker and replaced it with a 6" nail.

My point about my "all of 180kW" shows that even with a 50% increase in power going through it, the box still works perfectly.

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