No 6 Speed? What Are The 5 Speed Ratios Like?

[BlackBox]

Hi,

Bit of background,

Atm i have a N/A Mkiv Supra, I had always wanted a supra but have found that it is too space limited and impractical.. So i'm converting to the darkside and considering a skyline , which i had limited down to either a R33 GTR or R34 GTS (But that's another discussion).

I get off my P's in 12 months so was looking to buy one within that time frame, and also having a bombadore daily until i'm on my opens.

Because i've always been a supra man my skyline knowledge isnt that great but i have been doing my reading, and from what i can find the only 6 Speed skyline was the R34 GTR?

At the time that i found this out i was a little crushed, and it seemed like a clear deal breaker for team skyline, but i've been thinking about it and its still really the only car that comes close to all my criteria..

(room for 4, rwd, manual, aesthetically pleasing, Sub 50K, and not a turbo Taxi AKA XR6T etc..)

The car wont be a daily driver, but it will certainly get driven a lot, a holiday interstate regularly..

I believe my supra sits on ~2900 RPM at 100km/h, which is a little high for my liking, but it also is only a 5 speed..

I have done a little reading and believe the R33 GTR sits at about the same at that speed, but its also a completely different motor that i'm not familiar with..

My biggest concerns about having the motor rev at 3k + for 8+ hours were wear on the motor, and excess fuel usage (Not biggest concern but still at the back of my mind)..

Just after a little input about how the 5speed gearing is, and what BPU Skylines are like on fuel and reliability (Remembering im used to the bulletproof 2j )

[10 4]

6 Speed doesn't mean rev lower.

My S2000 revs at 3350rpm @ 100kmh.

Just ratios.

As for sitting there for a long period of time - will be fine.

edit: If you're that worried, http://www.skylinesa...nted-for-ecr33/

Edited January 11, 2012 by 10 4

[Bronx]

hmmmm. i forgot what mine sits at, i know my 2nd gear tops out at 110kmh... haha

but i think from memory i sit at 2400 or 2500rpm in 5th @ 100kmh.

havent driven the stagea for a couple of weeks. so dont quite remember.

but i think the 5th gear finished revving at 260kmh or so when hitting red line.

[mad082]

yeah as above, 6 speed doesn't mean it's a 5 speed box with an extra gear above 5th. the overall spread of ratios isn't that much different to a 5 speed.

as for sitting at 3000rpm at 100kmh for hours, it isn't an issue. (and fuel usage isn't an issue either). they were designed for this. pretty much every 4 cylinder car on the market will do it. skylines aren't some mystical creature that is totally different to every other car on the market. they are just another car.

of course when you compare it to the big aussie 6's and 8's that sit on about 1800rpm at 100kmh it seems high, but they only rev to 5000-5500rpm, and have a lot more low down torque, so they can do it. doing 100kmh at 1800rpm in a small turbo 6 would be horrible. you'd be dropping down a gear or 2 at the slightest little hill, or even if driving into a headwind, lol.

[BlackBox]

Thanks for the responses.

I understand that on a 6 speed, 6th is still usually the only overdrive gear, but i thought the overall ratio would still be a fair bit taller..

Most of my mates and family follow in the "Big aussie 6's and 8's" that rev so low at highway speeds, which is what had me concerned about my type of car cruising at their redline

[blk94r33]

yeah as above, 6 speed doesn't mean it's a 5 speed box with an extra gear above 5th. the overall spread of ratios isn't that much different to a 5 speed.

as for sitting at 3000rpm at 100kmh for hours, it isn't an issue. (and fuel usage isn't an issue either). they were designed for this. pretty much every 4 cylinder car on the market will do it. skylines aren't some mystical creature that is totally different to every other car on the market. they are just another car.

of course when you compare it to the big aussie 6's and 8's that sit on about 1800rpm at 100kmh it seems high, but they only rev to 5000-5500rpm, and have a lot more low down torque, so they can do it. doing 100kmh at 1800rpm in a small turbo 6 would be horrible. you'd be dropping down a gear or 2 at the slightest little hill, or even if driving into a headwind, lol.

+1

Prolonged operation at 3000rpm for a motor that revs to 7000 isn't going to hurt it

Mine sits on 2250-2300 at 100km/h from memory.

[jiffo]

Getrag 6-speed overdrive is 0.793:1 (5th is direct)

GTR 5-speed overdrive is 0.752:1

R34 GTR has the taller diff ratio of 3.545:1 compared to earlier GTR's having 4.11:1

You can do the maths.

[levinboy]

Your criteria states rwd why are you looking at GTRs as they are 4wd??

Just get a gtt and modify it

[BlackBox]

Your criteria states rwd why are you looking at GTRs as they are 4wd??

Just get a gtt and modify it

If i was to get the GTR i would be removing the HICAS system, as well as considering removing the 4wd, or i was going to see if it is possible to actively switch between 4wd and rwd, .. but having never driven a 4wd sports car i was going to look into it further,.

thanks for all the input so far

[10 4]

If i was to get the GTR i would be removing the HICAS system, as well as considering removing the 4wd, or i was going to see if it is possible to actively switch between 4wd and rwd, .. but having never driven a 4wd sports car i was going to look into it further,.

thanks for all the input so far

Don't buy a GTR..

If you want to switch between rwd and awd, go the 32 as thats the only one unless you feel like taking out the driveshaft often..

FWIW, in case you don't know, GTRs are RWD until there is traction loss then the front kicks in.

[Bronx]

my s2 stagea is RWD when i want it to be when i pull the green plug to bleed the atessa clutch same can be done for r33 GTR

but on dyno runs, remove your front driveshafts

[vetter2769]

dude, the GTR is AWD not RWD

[045HOW]

lol@3krpm

Better off getting a newer turbo taxi if you just wanna travel with it heaps anyway. Also how much more room do you think a 2 door 34 has over a supra?

4 doors are where its at!

[jiffo]

dude, the GTR is AWD not RWD

Nope,

10 4 is correct, GTR is RWD until wheel slip or excess acceleration is detected, THEN the front wheel assist kicks in.

Under normal driving conditions, you'll rarely see the torque gauge move much.

There's no 3rd differential in a GTR.

[10 4]

dude, the GTR is AWD not RWD

Yes its AWD..

I've only had 3, what would I know..

[045HOW]

Yes its AWD..

I've only had 3, what would I know..

Everyone knows you need to have owned atleast 3 BN GTRs as well as atleast 2 BCN GTRs for you to "know" about GTR "stuff"

[10 4]

Sorrey

[045HOW]

And this is why i still believe that there is a difference between AWD and 4WD. GTR is 4WD as it switches between RWD and AWD Whereas AWD is exactly what it says.....ALL WHEELS DRIVE ALL THE TIME.

#canofworms.