Considering going to 3.727 gear/pinion in 6MT - Page 6 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Racecomp Engineering · 01-22-2013, 11:01 PM

My bad. I will start a new thread once this is installed. BTW you must measure the required SHIM thickness ahead of time or in real time then get those from the Toyota dealer. I have 22 coming in the AM. So we try tomorrow to install it again.

Myles

mact · 01-22-2013, 11:14 PM

Quote:

Originally Posted by ShoNUFF

Not sure everyone realizes that OP is trying to nueter the performance to increase MPG?

No disrespect to OP but I'm just..

[IMG]http://www.reactiongifs.com/wp-content/uploads/2011/09/mind_blown.gif[/IG]

On a sports car forum? REALLY?

I guess it's the 21st century.. might as well go green?

A lower final drive would go great with forced induction/raised rev limit, IMO.

rice_classic · 01-23-2013, 01:17 AM

Nothing wrong with getting better mileage. I had the same complaint about the Integra Type R and the S2000. Why am I cruising along at 70mph at 4000rpms? Stupid.

I, however, did not want to change the diff for the obvious reason it affects all the gears. I just wanted to put in a longer 6th gear so only the ratio of that gear is elongated. However I did my cost benefit analysis (not to mention there wasn't an alternative 6th gear for me to use) and realized the fuel savings would essentially never pay back the investment.

Ain't nothing wrong with a sports car that get great mileage. It's like your start dating this incredible looking girl that is way out of your league only to find out she's a chef that loves auto-racing. Just you try and say no to that!

zohare · 01-23-2013, 05:18 AM

@Jeff Lange
Ok so correct me if I'm wrong. The A/T has the same final drive, but different gears. I would like a shorter final drive, I know the gears will still be a bit further apart, but I would still see this as a plus for the car... even If I would miss hitting 60 in second. (Almost a requirement to me.) So the Lexus LSD is taller? Bummer. Wouldv'e trade for a shorter final drive, either to an M/T owner or a Lexus (with LSD of course....) the auto really is frustrating mid shenanigans... Doesn't have the torque for second and simply roasts 1st on the limiter.

WRXGuy1 · 01-23-2013, 10:45 AM

Just drive 5mph slower, lol.

Rayme · 01-23-2013, 11:04 AM

Keep in mind 1st and 2nd gear will be shittier to use. Much easier to bog in 2nd gear means you'll end up shifting in 1st when now, as with current gearing, you don't need to.

mangostick · 01-23-2013, 11:09 AM

Quote:

Originally Posted by Racecomp Engineering

My bad. I will start a new thread once this is installed. BTW you must measure the required SHIM thickness ahead of time or in real time then get those from the Toyota dealer. I have 22 coming in the AM. So we try tomorrow to install it again.

Myles

Link to your thread so we can keep track.

uncivilised · 01-28-2013, 12:01 AM

I scored myself 4.556 diff gears from an auto GA70 supra.

Got it for peanuts lol,

Racecomp Engineering · 01-28-2013, 11:43 PM

Quote:

Originally Posted by mangostick

Link to your thread so we can keep track.

http://www.ft86club.com/forums/showt...275#post696275

mw

Allch Chcar · 01-28-2013, 11:51 PM

Quote:

Originally Posted by ShoNUFF

Not sure everyone realizes that OP is trying to nueter the performance to increase MPG?

No disrespect to OP but I'm just..

On a sports car forum? REALLY?

I guess it's the 21st century.. might as well go green?

It's okay to be confused. There are people who DD their cars and are more than happy with the torque but want more MPGs.

Dipstik-sportech · 07-21-2013, 08:25 AM

Can anyone 100% confirm if the entire rear end assembly is a bolt in, not just the internals? This is exactly what a boosted car needs and if we could score cheap diffs BONUS

Sent from my iPhone using Tapatalk 2

Brody602 · 01-10-2015, 06:41 AM

Quote:

Originally Posted by Dipstik-sportech

Can anyone 100% confirm if the entire rear end assembly is a bolt in, not just the internals? This is exactly what a boosted car needs and if we could score cheap diffs BONUS

Sent from my iPhone using Tapatalk 2

I believe you can confirm it now lol.

Also for those interested, the ring and pinipn can be had for roughly 500$ from amayama.com I ordered mine from there!

kodyo · 01-10-2015, 10:14 AM

Quote:

Originally Posted by Brody602

I believe you can confirm it now lol.

Also for those interested, the ring and pinipn can be had for roughly 500$ from amayama.com I ordered mine from there!

Weir performance sells the ring and pinion for about $260. You'd want the supra mark 3 gears for our diff.

Brody602 · 01-10-2015, 10:34 AM

Quote:

Originally Posted by kodyo

Weir performance sells the ring and pinion for about $260. You'd want the supra mark 3 gears for our diff.

Ahh, guess that would have been a little cheaper

Sent from my iPhone using Tapatalk

01-23-2013, 01:17 AM	#73
rice_classic Senior Member Join Date: Jun 2012 Drives: Nevermorange FRS Location: Seattle, WA Posts: 4,160 Thanks: 755 Thanked 4,200 Times in 1,803 Posts Mentioned: 77 Post(s) Tagged: 1 Thread(s)	Nothing wrong with getting better mileage. I had the same complaint about the Integra Type R and the S2000. Why am I cruising along at 70mph at 4000rpms? Stupid. I, however, did not want to change the diff for the obvious reason it affects all the gears. I just wanted to put in a longer 6th gear so only the ratio of that gear is elongated. However I did my cost benefit analysis (not to mention there wasn't an alternative 6th gear for me to use) and realized the fuel savings would essentially never pay back the investment. Ain't nothing wrong with a sports car that get great mileage. It's like your start dating this incredible looking girl that is way out of your league only to find out she's a chef that loves auto-racing. Just you try and say no to that! __________________ SCCA T4 - FRS

01-23-2013, 10:45 AM	#75
WRXGuy1 Senior Member Join Date: May 2012 Drives: 2013 WRB BRZ Premium 6MT Location: Goffstown, NH Posts: 662 Thanks: 606 Thanked 155 Times in 104 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Just drive 5mph slower, lol. __________________ 2013 BRZ Premium WRB MT - Picked up 5/31/12

01-23-2013, 11:04 AM	#76
Rayme The Answer Join Date: Sep 2012 Drives: Mazda 2 Location: Moncton, NB Posts: 1,233 Thanks: 488 Thanked 661 Times in 315 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Keep in mind 1st and 2nd gear will be shittier to use. Much easier to bog in 2nd gear means you'll end up shifting in 1st when now, as with current gearing, you don't need to. __________________ \| Roof wrap thread

07-21-2013, 08:25 AM	#81
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Can anyone 100% confirm if the entire rear end assembly is a bolt in, not just the internals? This is exactly what a boosted car needs and if we could score cheap diffs BONUS Sent from my iPhone using Tapatalk 2 __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

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01-22-2013, 11:01 PM	#71
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,408 Thanks: 3,420 Thanked 7,242 Times in 2,963 Posts Mentioned: 303 Post(s) Tagged: 9 Thread(s)	My bad. I will start a new thread once this is installed. BTW you must measure the required SHIM thickness ahead of time or in real time then get those from the Toyota dealer. I have 22 coming in the AM. So we try tomorrow to install it again. Myles

01-28-2013, 12:01 AM	#78
uncivilised Member Join Date: Oct 2012 Drives: 86 GT Location: australia Posts: 74 Thanks: 31 Thanked 27 Times in 20 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I scored myself 4.556 diff gears from an auto GA70 supra. Got it for peanuts lol,

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