skivittlerjimb
Well-known member
Long story short - for the types of events that I do, the gap between 1-2, 2-3, and 3-4 could stand to be shorter to keep me in the power band.
I'm honestly not sure if I have the DSM 1st gear or GVR4 1st gear, but either way, 1st gear is just about perfect for autox and hillclimb starts and I have no need to mess with that ratio.
2nd through 4th could all be shorter and closer together. Having 2nd gear a good bit closer to 1st gear would certainly help with being above the "lag band" around 3200 - 3600 rpm when I run out of first gear in autoxs. At track days, I've definitely noticed the fall off between 2nd and 3rd is also a bit too much and it'd be much better for lap times, less downshifts, etc., if I could leave the car in 3rd more often and rarely have to drop down to 2nd. Also, having 4th gear top out at 7k rpm ~110mph would be ideal, as this is about the maximum speed I'll likely see at a hill climb in VT or elsewhere for that matter. 5th gear is fine where it is and if I were to change the ratio I'd actually go 10% higher with it to get a bit better mpg on the highway. I realize getting spool and power lower down would be a partial remedy, but even a Evo 3 16G being spooled by 9.0 to 1 compression on a 2.0 isn't probably going to spool any lower than 3200 rpm. I might be able to get spool lower than that with a BB turbo but that's bigger money and an Evo 3 16G is really the route I want to go.
So, what are my options? Should I be looking for an overall gear set from some type of tranny that already exists, or will I need to custom order something to my needs from a shop like Jack's or TRE? Ideally I don't really want to mess with the final drive ratio. Right now I have a DSM 4-bolt viscous rear LSD and, I believe, a DSM 1G transmission as well, so if I can stick with that set up and only change the 2nd through 4th ratios to make them overall lower and closer I'd be happy.
I have a tranny in the car that's getting crunchy in 3rd and 5th and two spare trannys on the shelf in the garage. Anyone of these could be a candidate for a full send-off / re-build this winter, and I'm starting to budget for that already. I want to re-build for reliability and strength for sure, with autox, track days, hill climbs, and ultimately tarmac rally (Targa Newfoundland) in mind. I don't launch the car super hard nor do I abuse it trying to shift as fast as humanly possible. Advice?
-Jim B.
280/1000
I'm honestly not sure if I have the DSM 1st gear or GVR4 1st gear, but either way, 1st gear is just about perfect for autox and hillclimb starts and I have no need to mess with that ratio.
2nd through 4th could all be shorter and closer together. Having 2nd gear a good bit closer to 1st gear would certainly help with being above the "lag band" around 3200 - 3600 rpm when I run out of first gear in autoxs. At track days, I've definitely noticed the fall off between 2nd and 3rd is also a bit too much and it'd be much better for lap times, less downshifts, etc., if I could leave the car in 3rd more often and rarely have to drop down to 2nd. Also, having 4th gear top out at 7k rpm ~110mph would be ideal, as this is about the maximum speed I'll likely see at a hill climb in VT or elsewhere for that matter. 5th gear is fine where it is and if I were to change the ratio I'd actually go 10% higher with it to get a bit better mpg on the highway. I realize getting spool and power lower down would be a partial remedy, but even a Evo 3 16G being spooled by 9.0 to 1 compression on a 2.0 isn't probably going to spool any lower than 3200 rpm. I might be able to get spool lower than that with a BB turbo but that's bigger money and an Evo 3 16G is really the route I want to go.
So, what are my options? Should I be looking for an overall gear set from some type of tranny that already exists, or will I need to custom order something to my needs from a shop like Jack's or TRE? Ideally I don't really want to mess with the final drive ratio. Right now I have a DSM 4-bolt viscous rear LSD and, I believe, a DSM 1G transmission as well, so if I can stick with that set up and only change the 2nd through 4th ratios to make them overall lower and closer I'd be happy.
I have a tranny in the car that's getting crunchy in 3rd and 5th and two spare trannys on the shelf in the garage. Anyone of these could be a candidate for a full send-off / re-build this winter, and I'm starting to budget for that already. I want to re-build for reliability and strength for sure, with autox, track days, hill climbs, and ultimately tarmac rally (Targa Newfoundland) in mind. I don't launch the car super hard nor do I abuse it trying to shift as fast as humanly possible. Advice?
-Jim B.
280/1000