Anyone using close ratio gears?

[fika84]

Originally Posted by GT86_PRAGUE

I have Mfactory 1.5/2W (it was not affected by the crash, the guys was very suprised with that behaviour and as every other mech thought it is broken, but it was just very tight/heavy - not for 200hp), currently on much lighter setup with 3 lamels. I dont know more details now, but I will get them.

I am very happy with current setup, I only thing guys set it up more to 1.0 than 1.5, because there is zero kick/slide on downshift while braking. This is the only thing I will change with 4.88.

Nice! That's close to what I'm doing before installing it. Reducing the initial torque/pre-load and also reducing the locking capacity help tremendously with street setups!

It's still a 1.5 way, it's just not locking as strongly as before, and doesn't require as much torque to get the wheels to operate at different speeds.

Glad to hear it didn't break in the crash! I can't wait to get mine in with the 4.88.. still need to get the plates WPC treated and order bearings and seals.

[GT86_PRAGUE]

Originally Posted by fika84

Nice! That's close to what I'm doing before installing it. Reducing the initial torque/pre-load and also reducing the locking capacity help tremendously with street setups!

It's still a 1.5 way, it's just not locking as strongly as before, and doesn't require as much torque to get the wheels to operate at different speeds.

Glad to hear it didn't break in the crash! I can't wait to get mine in with the 4.88.. still need to get the plates WPC treated and order bearings and seals.

I have no option to do that WPC here. But I switch from Millers Nano Oil to Motul Blue (I have to - mech order). And it is quite silent. I did 2300km trip last week and it was quite comfortable at +-4000rpm whole way.

[MFactory]

MFactory also have a 2.992 1st, 2.08 2nd and 0.861 6th gear available for the GT86

[GT86_PRAGUE]

Originally Posted by MFactory

MFactory also have a 2.992 1st, 2.08 2nd and 0.861 6th gear available for the GT86

Thanks, I knew I saw them somewhere. I will ask EU distributor when time comes, but I probably get Cusco if price dif is not big.

Edit: These seems pretty useless, both of them are VERY CLOSE to OEM setup. Not worth the money and effort.

[FRS Justin]

Why don't you push the motor a little and get into the power band around 6500 to 7500 rpm? I have 35k miles on mine with 7500 rpm every time it goes down the street. Still running strong. The engines are tough and can handle it if you do proper services.
If I was doing it I would run a E85 Stg 2 tune Header and exhaust push it with 4.88 gears or 4.56 and zing the motor 7500 rpm.
Going close ratio trans gearing would not help near as much as adding power and would cost you at least twice as much.
Good luck, keep me posted on your results..

[GT86_PRAGUE]

Originally Posted by FRS Justin

Why don't you push the motor a little and get into the power band around 6500 to 7500 rpm? I have 35k miles on mine with 7500 rpm every time it goes down the street. Still running strong. The engines are tough and can handle it if you do proper services.
If I was doing it I would run a E85 Stg 2 tune Header and exhaust push it with 4.88 gears or 4.56 and zing the motor 7500 rpm.
Going close ratio trans gearing would not help near as much as adding power and would cost you at least twice as much.
Good luck, keep me posted on your results..

I already have headers and 7450 rev limit, so extra 50 rpm wont solve anything. So this is not a choice between headers or close gears. I expect from close gear to get usable shifting range/length on 2nd, because with 4.88 FD it will be too short. E85, headers or anything else wont fix this.
I will get E85 tune soon eitherway.

[OkieSnuffBox]

Devil's Advocate, too much shifting can hurt your progress as well because you reduce the time in the fat part of the powerband.

Granted we were testing on my old motorcycle, so it's not completey the same. But the difference between shortening the gearing ~13% and then bumping back doown to around ~7%...............only the small bump in gearing was actually faster down the 1/4 mile and at the racetrack.

In the 1/4 mile it prevent another shift and at the track it put me better in the power for the corners (of course this is track specific).

Not disagreeing with your plans, just throwing out the experience I had.

[GT86_PRAGUE]

Originally Posted by OkieSnuffBox

Devil's Advocate, too much shifting can hurt your progress as well because you reduce the time in the fat part of the powerband.

Granted we were testing on my old motorcycle, so it's not completey the same. But the difference between shortening the gearing ~13% and then bumping back doown to around ~7%...............only the small bump in gearing was actually faster down the 1/4 mile and at the racetrack.

In the 1/4 mile it prevent another shift and at the track it put me better in the power for the corners (of course this is track specific).

Not disagreeing with your plans, just throwing out the experience I had.

Exactly. Thats why I am interested in these, because i would shift LESS with this gear set on (at least theoretically).

[OkieSnuffBox]

if 3-4-5-6 stay the same, you'll be shifting through those MUCH quicker with that steep FD. Unless you're only concerned with 1-2.

To be honest, it seems like you need to do a lot more analysis before you make this move.

EDIT: Re-read your first post, if you're 2nd gear is to short as it, why not go numerically lower on your FD?

Going higher on the FD, then changing your 1-2 gear ratios in the trans to match seems........well......daft to say the least.

[FRS Justin]

Originally Posted by GT86_PRAGUE

I already have headers and 7450 rev limit, so extra 50 rpm wont solve anything. So this is not a choice between headers or close gears. I expect from close gear to get usable shifting range/length on 2nd, because with 4.88 FD it will be too short. E85, headers or anything else wont fix this.
I will get E85 tune soon eitherway.

I thought you were in the 5k to 6k rpm range??

[GT86_PRAGUE]

Originally Posted by OkieSnuffBox

if 3-4-5-6 stay the same, you'll be shifting through those MUCH quicker with that steep FD. Unless you're only concerned with 1-2.

To be honest, it seems like you need to do a lot more analysis before you make this move.

EDIT: Re-read your first post, if you're 2nd gear is to short as it, why not go numerically lower on your FD?

Going higher on the FD, then changing your 1-2 gear ratios in the trans to match seems........well......daft to say the least.

I am N/A and always be, I wont go lower with FD, car feels slow there.
I have 4.67 on a car and 4.88 waiting on install, 4.67 was not that short as I expected, so thats why I jump to 4% more. With that, I will probably shift more, so I could keep 4.67 and go with lightest wheels, cf driveshaft etc, but thats more expensive than doing geabox and still dont match my expectations.

I am doing my analysis, thats why I asked if anyone has it and put some numbers above.

[GT86_PRAGUE]

Originally Posted by FRS Justin

I thought you were in the 5k to 6k rpm range??

I see. I am guessing I am in this range except some straight where I shift to third just above 7000rpm. But believe me, I upshift as late as I can, I am limited by track layout and cant be in higher rpms due to tight layout. Thas why I will upgrade from 4.67 to 4.88, to have more power/torque. I cant get 5.1 cause I do highways too.

Edit: Now I have 7600rpm limiter and it dont fall hard like OEM, so I might be even faster. So better brakes next time. Never ending story.