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Quick Question For Mechanically Minded Ppl

GTRAAH

By GTRAAH,
in Engines & Forced Induction

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GTRAAH Experienced

GTRAAH

Posted
Posted

I have just put in the latest drag version of the os giken box, Something my tuner says his never seen before he said it was a new type, The gears were huge he claims, Alittle noisy but im not worried. Neways Now this happens very rarely usually in the first 3 gears, As im booting it a miss a gear on the odd moment and the revs go through the roof 8-9000rpm, Is that harming my engine? I have stock internals but everything around i have modded cams, injectors, pump, PFC bla bla and the rest , only thiing i need now is the internals done. But neway i just feel like i've hurt the engine in someway and i get realllly shitttyyy when it happens as this car is my pride and joy, What harm am i actually doing when this occurs?

GTScotT Grand Master

GTScotT

Posted
Posted

Your motor should have a rev limiter still so damage to the motor would not be something crazy, although standard oil pumps and rev limiters dont go hand in hand with the RBs.

Another thing to note is that when you do that you are flaring your clutch, this will kill it alot quicker than it should.

Its all timing, it shouldnt be an accepted out come that you 'missed a gear'. Try driving fast in slow motion, sounds ridiculous but it works.. After a while ull get into a nice groove.

GL

GTRsean Grand Master

GTRsean

Posted
Posted

Ty 9500 on a stock engine with N1 turbs! then you are getting somewhere, accidently saw that when I first got my 32, had fcon v pro computer.

I never had any troubles when it went that high. Just don't limiter bash, that kills oil pumps!

GTRAAH Experienced

GTRAAH

Posted
  • Author
Posted (edited)
Ty 9500 on a stock engine with N1 turbs! then you are getting somewhere, accidently saw that when I first got my 32, had fcon v pro computer.

I never had any troubles when it went that high. Just don't limiter bash, that kills oil pumps!

haha hates when it happens! Nah i never limit bash

Edited by GTRAAH
N1GTR Grand Master

N1GTR

Posted
Posted

GTRAAH you should clarify what box you've got.

OSGiken make more than one gearbox option.

I'll guess you have a 5spd kit that goes into your standard gearbox case. When you say latest drag box, people will assume the OS88 is what you've got

linkems Collaborator

linkems

Posted
Posted

Sorry to hijack but kinda on topic, with regards to limiter bashing. Would a launch control like the gizzmo set at a much lower rpm say 4-5000rpm put stress on the oil pump? If someone can explain why as well that would be great

cheers Pat

GTRAAH Experienced

GTRAAH

Posted
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LOL i do know how to Drive!! no one is perfect mate it happens! 20k??? wtf no yes i think n1gtr got my drift its 5spd kit that goes in the casing Mark at hills said there was a street version and drag version and i have the drag version. He said he has never seen this one before must be new.

GUN_METAL_GTR32 Grand Master

GUN_METAL_GTR32

Posted
Posted
LOL i do know how to Drive!! no one is perfect mate it happens! 20k??? wtf no yes i think n1gtr got my drift its 5spd kit that goes in the casing Mark at hills said there was a street version and drag version and i have the drag version. He said he has never seen this one before must be new.

yeah dude the gears in them are pretty massive ive ordered the 5 speed drag version myself

did u get it with the input shaft as well??

there rated at 800hp i think so u shouldnt break it with a stock motor i dont reckon

GTRAAH Experienced

GTRAAH

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  • Author
Posted

I was told they can withstand 1200hp this guy they know had the same box and he has done PLENTY of 9 sec runs in it, and still solid. Is the gearbox meant to be alittle notchy i would of thought that its like a brand new gearbox as in perfectly smooth gear changes like a brand new car, I dont know input shaft?? is that the main shaft? if so i put an r33 gtr one in there they are alittle stronger.

XRATED Veteran

XRATED

Posted
Posted
I was told they can withstand 1200hp this guy they know had the same box and he has done PLENTY of 9 sec runs in it, and still solid. Is the gearbox meant to be alittle notchy i would of thought that its like a brand new gearbox as in perfectly smooth gear changes like a brand new car, I dont know input shaft?? is that the main shaft? if so i put an r33 gtr one in there they are alittle stronger.

A correctly built OS box should be nice and smooth...

Yeah they are rated at 1200hp with a 9k rpm shift limmitation- OS recomends 800hp

The input shaft is the splined shaft sticking out of the front of the gearbox. It transfers the rotational torque from the motor/clutch to the main shaft in the gearbox. These are a "weak" link for high hp GTR's. Unless your planning to run 400rwkw or more- it's not needed.

The OS gearsets are designed for the later r33 GTR box.

J.

GTRAAH Experienced

GTRAAH

Posted
  • Author
Posted
A correctly built OS box should be nice and smooth...

Yeah they are rated at 1200hp with a 9k rpm shift limmitation- OS recomends 800hp

The input shaft is the splined shaft sticking out of the front of the gearbox. It transfers the rotational torque from the motor/clutch to the main shaft in the gearbox. These are a "weak" link for high hp GTR's. Unless your planning to run 400rwkw or more- it's not needed.

The OS gearsets are designed for the later r33 GTR box.

J.

Are input shaft and main shaft the same thing? i think it did come with the input....... Well i know that when i snapped 3rd on my stock box he said something wedged itself between the main shaft and put smal hairline cracks in it, he said to me that this shaft doesnt have force on it so it doesnt ever brake he said he had one from an r33 so he used it. The only reason i broke it is because of the gear braking and wedging itself in it.

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