I have been racking my brains over the gear ratio change. I am trying to find the "best" ratio for me and my driving.
IIRC, the 198mm ratios available are 2.87 3.06 3.64 & 3.90
If you change to RT axles the 3.73 & 3.90 are available.
Inertia Motorsports has given me two different recommendations over the last 6 months. First was a 3.23 ratio (after market gears) and the second was the 3.73 RT.
The dilemma I am facing is the fact I commute 80+ miles per day with a 60/40 hwy/city driving.
Currently I am running shorter height tires (26.7'' vs 28'') which changes the ''effective'' gear ratio by 1.05 which roughly equals a 3.01 rear axle. The change raised my rpms by 100 at hwy speeds. I have been very amazed with the increase in take off and drivability this relatively small change produced. But I would like more...
If I change the rear gear from the 2.87 to a 3.06 (198mm) then my effective ratio with the tires would be 3.20 which is close to the first recommendation of 3.23 gears.
My concerns with going to the 3.64 or 3.73 gears are mpgs and road noise (exhaust) in the car a hwy speeds. I have driven around some with the autostick in 4th gear with the rpms around 2500. The extra exhaust noise gives me a headache after a while. This concerns me since my commute is 1-1.5 hours each way.
Any thoughts...?
IIRC, the 198mm ratios available are 2.87 3.06 3.64 & 3.90
If you change to RT axles the 3.73 & 3.90 are available.
Inertia Motorsports has given me two different recommendations over the last 6 months. First was a 3.23 ratio (after market gears) and the second was the 3.73 RT.
The dilemma I am facing is the fact I commute 80+ miles per day with a 60/40 hwy/city driving.
Currently I am running shorter height tires (26.7'' vs 28'') which changes the ''effective'' gear ratio by 1.05 which roughly equals a 3.01 rear axle. The change raised my rpms by 100 at hwy speeds. I have been very amazed with the increase in take off and drivability this relatively small change produced. But I would like more...
If I change the rear gear from the 2.87 to a 3.06 (198mm) then my effective ratio with the tires would be 3.20 which is close to the first recommendation of 3.23 gears.
My concerns with going to the 3.64 or 3.73 gears are mpgs and road noise (exhaust) in the car a hwy speeds. I have driven around some with the autostick in 4th gear with the rpms around 2500. The extra exhaust noise gives me a headache after a while. This concerns me since my commute is 1-1.5 hours each way.
Any thoughts...?