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Gear Ratios - Doing 65mph at 3k


alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975404 posted 03/08/11 08:23 PM     Remind Me!  Send Private Message   Edit Post      
Is there anyway around this? I kinda would like to cruise at 64 below 3k. Anyone have any kind of options or ideas? I am pretty sure I can't do much but might as well ask.



1992 Galant VR4
1996 Toyota Supra TT

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dmj
Rod Stewart
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Galant VR-4 org Post #: 975409 posted 03/08/11 08:44 PM     Remind Me!  Send Private Message   Edit Post      
EVO 3 fifth gear is what you need I believe it is 11% taller and should lower your rpm's at highway speeds.

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975410 posted 03/08/11 08:45 PM     Remind Me!  Send Private Message   Edit Post      
Where would I find this? Is there a thread somewhere regarding compatibility between the EVO3 transmission and the VR4?



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (173.3.24.20) | Report this post to a Moderator

2of9
Hellaflush
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Galant VR-4 org Post #: 975411 posted 03/08/11 08:45 PM     Remind Me!  Send Private Message   Edit Post      
IIRC, 62mph is 28xx revs. And yep, taller 5th gear should definitely help



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Team Nines DSM Specialist

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975415 posted 03/08/11 09:08 PM     Remind Me!  Send Private Message   Edit Post      
I mean its not TERRIBLE but an upgrade wouldn't be a bad idea. The transmission was rebuilt around 500miles ago by Turbotrix. I guess I will wait for a nice built transmission to pop up for cheap.

Anyone got any other ideas? I have read a few people swapping gears but how compatible are they? Is there a thread I can educate myself about this?



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (173.3.24.20) | Report this post to a Moderator

cheekychimp Galant VR4.org Moderator
Director of Housing and Urban Development, and carbon/kevlar balls


Galant VR-4 org Post #: 975427 posted 03/08/11 10:02 PM     Remind Me!  Send Private Message   Edit Post      
Can't remember any threads exactly but if you PM me and leave your email Alan I can send you a couple of Excel files that will lay out some different options and allow you to calculate speeds at certain RPMs for certain combinations.

For a reference if you were to swap your Galant 3.866 secondary for a 2G 3.55 secondary drive, then at 3000 rpm in 5th you would be doing 68 mph instead of 62 mph. If you want more work and are willing to look for the parts, get yourself a set of Evo III gears and run them with your Galant Primary and a Galant GSX 3.1 secondary (you will need the GGSX rear ring and pinion for the rear end) and you will be looking at closer to 85 mph in 5th at 3000 rpm, possibly more since the Evo III 5th is a bit taller! My figures are for Evo/RS Gears but those are weaker than the Evo III gears and not as easily available for you (and the ratios are damn near identical anyway so I wouldn't even bother looking for those).

You can get gear sets from most of the big transmission places (TRE, Jacks, Shep etc) and most of them will build you a cluster with double synchros etc which you can install yourself.

I'm just looking at that Excel file again and it appears that if you just use the Evo/RS GVR4 gearset in your stock Galant transmission (again gear ratios for the Evo III will be almost identical with a slightly taller 5th gear) you would hit 67.5 mph at 3000 rpms. This method would be a lot easier and should get you the gains you want. 1st and 2nd would also be taller but 3rd and 4th slightly shorter.

Paul.

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975439 posted 03/08/11 10:55 PM     Remind Me!  Send Private Message   Edit Post      
Quote:

For a reference if you were to swap your Galant 3.866 secondary for a 2G 3.55 secondary drive, then at 3000 rpm in 5th you would be doing 68 mph instead of 62 mph. If you want more work and are willing to look for the parts, get yourself a set of Evo III gears and run them with your Galant Primary and a Galant GSX 3.1 secondary (you will need the GGSX rear ring and pinion for the rear end) and you will be looking at closer to 85 mph in 5th at 3000 rpm, possibly more since the Evo III 5th is a bit taller! My figures are for Evo/RS Gears but those are weaker than the Evo III gears and not as easily available for you (and the ratios are damn near identical anyway so I wouldn't even bother looking for those).




This just confused the shit out of me. What do you mean by secondary drive? Do you mean the rear end? Keep in mind I am a noob with the terminology.



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (173.3.24.20) | Report this post to a Moderator

OMFGeofffff
All I want is a dodgy
567/1000


Galant VR-4 org Post #: 975452 posted 03/08/11 11:47 PM     Remind Me!  Send Private Message   Edit Post      
I remember someone on here(Myles maybe?) that had a pic of them doing 70mph at like 2500 rpm. For some reason ggsx 5th gear comes to mind. Don't quote me though just something to think about.



-Jeff
Kensington Grey - A87 stock (EQ/input, no sunroof)
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cheekychimp Galant VR4.org Moderator
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Galant VR-4 org Post #: 975481 posted 03/09/11 02:19 AM     Remind Me!  Send Private Message   Edit Post      
Quoting alansupra94:



This just confused the shit out of me. What do you mean by secondary drive? Do you mean the rear end? Keep in mind I am a noob with the terminology.




Sorry mate what I wrote is misleading. The rear ring and pinion is something different. If you change the ratio going through the transfer case you also need to use the matching ring and pinion at the rear of the vehicle to match the ratios.

I shouldn't say drive, it is misleading. It is a Secondary Ratio.



Getting old sucks ... but it sure beats the alternative !!!

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975512 posted 03/09/11 09:41 AM     Remind Me!  Send Private Message   Edit Post      
Now I am really lost. I am use to cars that have simple transmissions I guess. I am use to having a transmission and a fixed rear end. I will try and read more into this so I understand what you are saying.

So does primary = transmission, secondary = transfer case and ring and pinion = rear end?



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (192.132.229.1) | Report this post to a Moderator

gtluke
Fegbasket


Galant VR-4 org Post #: 975515 posted 03/09/11 09:56 AM     Remind Me!  Send Private Message   Edit Post      
how far are you driving your galant that the .25mpg is going to matter? I swapped mine out so I do about 3800rpm at 65mph, makes the car faster. I'm willing to spend money to go faster and this is an easy way.



86gt pte67gtq
galant vr4 1464 12.83 @ 106
92 suzuki bandit400, 4" shorter than stock

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thecman02
too lazy to look
580/1000


Galant VR-4 org Post #: 975527 posted 03/09/11 11:28 AM     Remind Me!  Send Private Message   Edit Post      
faster or quicker ?

I got the longer 5th gear. It makes a much bigger difference then .25mpg at least in my case it did. I've gained 3-4mpg highway. 80mph is around 3500 which is much better then 4000rpm for 80. 70mph is roughly 3k.



580/1000

-Chris

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975529 posted 03/09/11 11:29 AM     Remind Me!  Send Private Message   Edit Post      
^^^^

Wasn't really for the gas options. I was just mainly seeing what options were out there. I probably will not be doing anything since the transmission has been rebuilt and shifts like butter. I was just tempted to step the power levels to around 400hp-500hp and have heard that the transmission might shit out at that point.



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (192.132.229.1) | Report this post to a Moderator

110of2k
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Galant VR-4 org Post #: 975531 posted 03/09/11 11:37 AM     Remind Me!  Send Private Message   Edit Post      
Quoting thecman02:

faster or quicker ?

I got the longer 5th gear. It makes a much bigger difference then .25mpg at least in my case it did. I've gained 3-4mpg highway. 80mph is around 3500 which is much better then 4000rpm for 80. 70mph is roughly 3k.




What did you use for your taller 5th gear? I would LOVE travel 80mph @ 3500rpm along with netting another 3-4mpg. I commute 100mi a day usually traveling between 75-85mph

thanks in advance!
Anthony

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975549 posted 03/09/11 12:56 PM     Remind Me!  Send Private Message   Edit Post      
All these NJ people coming out the wood work now.

I am still a bit confused on what primary and secondary gears mean PHYSICALLY.



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (192.132.229.1) | Report this post to a Moderator

Struc
Not all filled in


Galant VR-4 org Post #: 975578 posted 03/09/11 02:36 PM     Remind Me!  Send Private Message   Edit Post      
Each gear in your transmission has a gear ratio. Besides that, you have a secondary ratio that all of those gears get put to the ground through, which is the ratio of your rear differential.

Keep in mind, though, that you're driving the front wheels too, so your secondary gear ratio needs to be changed in the front as well as the back, so they are the same.

So, if you're looking to change the secondary gear ratio by swapping out the rear differential, you also have to open up the tranny and change that (front) differential as well.

Hopefully that makes it clearer.

EDIT: Go to the VFAQ and in the Drivetrain section under the Manual Transmission heading there is a "GEAR RATIOS" VFAQ that might help you visualize it.

EDIT2: TRE used to sell 10%, 15% and 25% taller 5th gear replacements. I can't seem to find any of them on their website anymore though. No idea which application they came out of, though.



Curt Shambeau
92 GVR4 56/1000 (SOLD)
09 Lancer Ralliart (SOLD)
96 Spyder GS(t) (SOLD) - My 4G64 Spyder Website
1987 Montero SWB (Wideblock 4g64 build in progress)


Edited by Struc (03/09/11 02:48 PM)

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975584 posted 03/09/11 02:58 PM     Remind Me!  Send Private Message   Edit Post      
^^^^^

OMG I love you. That makes so much more sense now. So if I were to change the rear end, I would have to change the front end too. What was really confusing is that on the spreadsheet, it showed that 2G rear end has a different ratio than the 1G. Is that true? If so then how am I running a 4 bolt rear end?

Thanks,
Alan



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (192.132.229.1) | Report this post to a Moderator

Struc
Not all filled in


Galant VR-4 org Post #: 975587 posted 03/09/11 03:01 PM     Remind Me!  Send Private Message   Edit Post      
#1: You are running a 1G AWD 4-bolt rear
#2: You're probably looking at the Automatic transmission rear ratio, not M/T.



Curt Shambeau
92 GVR4 56/1000 (SOLD)
09 Lancer Ralliart (SOLD)
96 Spyder GS(t) (SOLD) - My 4G64 Spyder Website
1987 Montero SWB (Wideblock 4g64 build in progress)

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 975590 posted 03/09/11 03:05 PM     Remind Me!  Send Private Message   Edit Post      
Okay that makes more sense.

click

According to this, the diameter of the stock Galant VR4 is 24.21 but in the program, it is logged as 23. Is that correct? I forgot that my tire and wheel is rather large. Although my speedometer says I am doing 65, apparently I am doing 71

Also where does the center diff fall under in this? What would its name be?



1992 Galant VR4
1996 Toyota Supra TT


Edited by alansupra94 (03/09/11 03:19 PM)

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110of2k
Junior Member
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Galant VR-4 org Post #: 975605 posted 03/09/11 04:14 PM     Remind Me!  Send Private Message   Edit Post      
I contacted Jacks Transmissions. They sell an EVO3 5th gear-set for $221. They say it can be installed w/o modification to AWD and FWD 92-99 transmissions. Any more info on this would be appreciated.

Thanks!
Anthony

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MrP
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Galant VR-4 org Post #: 976300 posted 03/12/11 04:08 PM     Remind Me!  Send Private Message   Edit Post      
Taller rim/tire combo would do the same thing right? Just make sure to get some relatively lightweight wheels/

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 976372 posted 03/12/11 09:01 PM     Remind Me!  Send Private Message   Edit Post      
^^^^^^

There is a limit though. Right now, I am pushing the limit with a 225/45/18 tire. That only makes a small difference really. I plan on sourcing GSX stuff soon and building another transmission.



1992 Galant VR4
1996 Toyota Supra TT

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turbowop
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Galant VR-4 org Post #: 976388 posted 03/12/11 09:48 PM     Remind Me!  Send Private Message   Edit Post      
On 503 I run a 205/70 which is much taller than stock and I still think the engine is too high in the revs on the freeway. The taller 5th gear is a much better way to get the revs down for freeway cruising.



-Mark

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Galant VR-4 org Post #: 981215 posted 03/31/11 12:06 PM     Remind Me!  Send Private Message   Edit Post      
Right now I an learning about this stuff in my automotive classes. Interesting stuff, mostly witchcraft imo. I too am looking for a way to cruise at 75mph at a lower rpm and so far it sounds like the EVO III 5th gear is a good option. What ratio would need to be used on the ring/pinion gears with taller gears? Where can I get the ring/pinion gears for the taller gears? Junkyards i'm guessing unless Jacks or TRE sells them but I can't find anything on their site. Right now at highway speeds I'm pushing 3800rpm going 75mph. I also have the 4-bolt rear diff but I am considering options on a LSD if possible.

I forgot to ask about the front diff ratio: Will that need to be matched up with the rear gear ratio as well?



ლ(ಠ益ಠლ)
MOOSEN!


Edited by R34P3R62 (03/31/11 12:08 PM)

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alansupra94
Excuse the retarded question.
4/1000


Galant VR-4 org Post #: 981312 posted 03/31/11 07:16 PM     Remind Me!  Send Private Message   Edit Post   
Yup your front and rear have to match. Thus it makes things easier to just get a taller 5th which I am looking into.



1992 Galant VR4
1996 Toyota Supra TT

Posts: 1832 | From: Wayne,NJ | Member Since: 03/03/10 | IP: (173.3.24.20) | Report this post to a Moderator


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