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6th speed conversion

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Old Nov 20, 2008 | 08:55 AM
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blackrocky's Avatar
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6th speed conversion

has anyone done the 5 to 6 speed conversion?
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Old Nov 20, 2008 | 09:00 AM
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not that i know of

but it's been discussed before
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Old Nov 20, 2008 | 10:29 AM
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That would be totally ridiculous and stupid...
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Old Nov 20, 2008 | 10:37 AM
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We have sold 4 kits to members, 1 to Canada, and 3 to the states... So it has been done...
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Old Nov 20, 2008 | 10:40 AM
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Originally Posted by TrevMo
That would be totally ridiculous and stupid...
Actaully no, it would be a benefit but not for the price IMO
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Old Nov 20, 2008 | 11:22 AM
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Originally Posted by Rangerondubz
Actaully no, it would be a benefit but not for the price IMO
How would it be a benefit?
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Old Nov 20, 2008 | 11:26 AM
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Originally Posted by TrevMo
How would it be a benefit?
The only benefit I can think of is the fact that most 6 speeds have closer ratios than our 5 speeds. It kind of annoys me that our 2nd gear is so much taller than first so when you rev it up to 3000 rpm and shift to second the revs drop to 1600 and the car bogs. Generally there will be no gas milage benefit as our cars have two overdrives already 4th= 0.89, 5th= 0.70. Most overdirves do not go any higher than 0.70 anyway.
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Old Nov 20, 2008 | 11:29 AM
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Originally Posted by Terminator2
The only benefit I can think of is the fact that most 6 speeds have closer ratios than our 5 speeds. It kind of annoys me that our 2nd gear is so much taller than first so when you rev it up to 3000 rpm and shift to second the revs drop to 1600 and the cars bogs.
I'm not really sure that a closer ratio would be better...first is REALLY short...but if you run it up in the 5000 RPM range, the shift to second is excellent...since there is torque in every gear at every RPM, I think it is perfect...

I have definitely noticed that driving this thing like a fuel sipping econo-car does not work as well as driving it in the high RPM range...everything just feels better up there...
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Old Nov 20, 2008 | 11:35 AM
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taller 1st gear shorter everything else... so you get off the line better and go through the gears more quickly. and it gives better gas milage i think. also you are in the powerband of each gear better in each shift so you have a bit more power right away when you shift

Originally Posted by Terminator2
The only benefit I can think of is the fact that most 6 speeds have closer ratios than our 5 speeds. It kind of annoys me that our 2nd gear is so much taller than first so when you rev it up to 3000 rpm and shift to second the revs drop to 1600 and the car bogs. Generally there will be no gas milage benefit as our cars have two overdrives already 4th= 0.89, 5th= 0.70. Most overdirves do not go any higher than 0.70 anyway.
alot of the 6th gear trannys are more along the lines of .5

Last edited by freakta; Nov 20, 2008 at 11:35 AM. Reason: Automerged Doublepost
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Old Nov 20, 2008 | 11:38 AM
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Originally Posted by freakta
taller 1st gear shorter everything else... so you get off the line better and go through the gears more quickly. and it gives better gas milage i think. also you are in the powerband of each gear better in each shift so you have a bit more power right away when you shift



alot of the 6th gear trannys are more along the lines of .5
This has been discussed many times...extra gears do not automatically give better gas mileage...there are competitors to the SS/TC with 6 speeds that run at higher RPMs in 6th at 60 MPH than the SS/TC does in 5th at 60 MPH...

And going through more gears will likely slow you down...why do you think drag cars only have two gears?
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Old Nov 20, 2008 | 11:43 AM
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i said i think it gives better gas milage i wasnt sure... most top fuel cars dont have gears.

on a road coarse more gears to keep you in the powerband is better. it all depends on what you do with the car.
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Old Nov 20, 2008 | 12:05 PM
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Originally Posted by freakta
i said i think it gives better gas milage i wasnt sure... most top fuel cars dont have gears.

on a road coarse more gears to keep you in the powerband is better. it all depends on what you do with the car.
I think the SS/TC is pretty unique in that the torque is all the way across the RPM range...for instance, on the C&D Lightning lap, they said they ran almost the whole track in 3rd gear...no need for more gears when you get maximum power and torque throughout the entire gear...
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Old Nov 20, 2008 | 12:08 PM
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doesn't the 6th gear conversion only give you a double overdrive for better highway mileage? I didn't think it regeared your output drive too.
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Old Nov 20, 2008 | 12:11 PM
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I feel that way about my S/C. Third gear is the **** but I am considering the 6 spd

Originally Posted by Psykostevo
doesn't the 6th gear conversion only give you a double overdrive for better highway mileage? I didn't think it regeared your output drive too.
Yeah, if I remember correctly the 6 spd's ratio is very close to our stock 5

Last edited by 2FST4U; Nov 20, 2008 at 12:11 PM. Reason: Automerged Doublepost
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Old Nov 20, 2008 | 01:55 PM
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I think you would see a benifit from road racing, not drag racing...
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Old Nov 20, 2008 | 02:00 PM
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Originally Posted by freakta
on a road coarse more gears to keep you in the powerband is better. it all depends on what you do with the car.
Would be able to better comment once I've run more coarses, but unless you get into a REDICULOUSLY tight, smaller course I don't know how much benefit it would be.

The course where I race at, myself and most of my instructors prefer the setup on the SS/SC to other 6 speed setups. Only gears I need once I'm rolling are 3rd and 4th and I stay square in the middle of both of them. Although on the front stretch, it pushes REALLY close to the end of 4th.
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Old Nov 20, 2008 | 04:53 PM
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I like long gears for my turbo car. I'm not too happy with 1st gear, but the rest are fun.
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Old Nov 20, 2008 | 05:37 PM
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Originally Posted by Psykostevo
doesn't the 6th gear conversion only give you a double overdrive for better highway mileage? I didn't think it regeared your output drive too.
It not only adds a gear, it also changes all the gears 1-5 in addition, to make room for the 6th
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Old Nov 20, 2008 | 05:56 PM
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Originally Posted by TurboTechRacing
It not only adds a gear, it also changes all the gears 1-5 in addition, to make room for the 6th
Ah, that explains a lot. I thought I remembered reading ~2 years ago that it just popped a 6th in there.
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Old Nov 20, 2008 | 05:57 PM
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Nope it is a complete new gear set, I belive Quaife stated they are around 25% stronger gears then stock
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Old Nov 20, 2008 | 06:02 PM
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Originally Posted by TurboTechRacing
Nope it is a complete new gear set, I belive Quaife stated they are around 25% stronger gears then stock
u gunna put this in your ss/tc maybe?
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Old Nov 20, 2008 | 06:06 PM
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is there the huge gap on the 1-2? Also, is 1st gear taller? I hate 1st gear on the stock F35... useless.
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Old Nov 20, 2008 | 06:08 PM
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Originally Posted by chris88z24
is there the huge gap on the 1-2? Also, is 1st gear taller? I hate 1st gear on the stock F35... useless.
Gear specs on the new set can be found on www.TurboTechRacing.com
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Old Nov 20, 2008 | 06:09 PM
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Originally Posted by TurboTechRacing
Gear specs on the new set can be found on www.TurboTechRacing.com
How turbotech-ally delicious!
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Old Nov 20, 2008 | 06:55 PM
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Originally Posted by 1WhiteSSTC
u gunna put this in your ss/tc maybe?
.........question still stands
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