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Gtr Off The Line

steven22

By steven22,
in R Series (R30, R31, R32, R33, R34)

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steven22 Collaborator

steven22

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Hey I've done a little searching on the matter but haven't been able to find what I'm looking for. Anyway, my GTR is slow off the line, what sort of things do I need to add/change to give it a little more take off without having to dial up a heap of revs.

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https://www.sau.com.au/forums/topic/206463-gtr-off-the-line/
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steven22 Collaborator

steven22

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Although that is fun, its not so good on the street. The car just feels heavy off the line, should I just assume that because of the gtr's weight and the 4wd that it will always be heavy, or can this be helped in some way, like with a better flowing exhaust or something like that.

GTR-32U Mentor

GTR-32U

Posted
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i got a lightened flywheel when i did my clutch and the ease in takeup at low revs was very noticable especially for normal day driving. it was a completely different car to drive. not sure if this what your after or if it is suited to you

wow thats interesting...I was always under the impression that lightened flywheels only helped in the higher revs..Thats the second person who reported better low end torque from the lightened flyweel mod

GTR-32U Mentor

GTR-32U

Posted
Posted
lighten flywheels help alot in engine response.

I know TODA do a really good flywheel...they come in many specs from mild street to outright race...So response has improved ...howabout low end pull...like take off without the big revs...better by a noticable amount right ?

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
Hey I've done a little searching on the matter but haven't been able to find what I'm looking for. Anyway, my GTR is slow off the line, what sort of things do I need to add/change to give it a little more take off without having to dial up a heap of revs.

GTR's will get that. The car is alittle heavy for what it is OR can be a bit lighter. Basicaly you feel the car getting "bogged".

Getting a good launch = rev the car to about 4000rpm + to get the turbos spolling and engage the clutch.

Lightweighted flywheel will help alot and twin clutch plate but I will go single Extra heavy duty.

r32line Mentor

r32line

Posted
Posted

you dont have to launch them hard to get off the line quicker, with a heavy duty single u should be able to bring it up to like 3k and then just ride it a bit off the line. Not as harsh on the various components that way compared with like an 8k dump and still reasonably swift... any1 else agree?

(B1) MR_fanny Grand Master

(B1) MR_fanny

Posted
Posted

its kinda feeling where with the old flywheel when you just engage it bogs and doesnt want to go but with the lightened flywheel it wants to go....your expecting some lag but its just not there anymore. all normal street, carpark driving. maybe its the combination of the cushion button engaging better? mind you i did get adjustable exhaust cam and a light tune but the car is rediculously more responsive than before.

Pezhead Grand Master

Pezhead

Posted
Posted (edited)

My experience with a lightened flywheel suggests it will rev faster but bog down more. I had a 240Z with a 8lb flywheel and it would rev so fast but you had to really slip the clutch to get moving. And a 240Z only weighs about 2/3 what the skyline does, of course without as much power. A lightened flywheel doesn't have as much momentum built up on the revs so there is less to transfer to the drivetrain when you want to get moving. Once moving you will feel the difference in acceleration.

I'm really curious on this too. The latest HPI Skyline special has an article on going 11 sec 1/4. It says to take your GTR to the rev limiter and hold it there, count to five and dump the clutch. Sounds like a drivetrain failure wanting to happen to me.

So do most folks here launch between 4-6 k revs? How much difference does it make on your 60 foot times if you really launch hard?

Keenly interested too. thx.

Edited by Pezhead
(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

^^4000RPM is quite a bit.

1st time I was gettting use to my HKS twin plate, I accidentaly revved it and launched at 4000RPM and I was pushed back in my seat and cought up to the car which was about a car length ahead of me.

I was like "WTF! Geez! What the Hell! Then got use to it. LOL!

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