thorne Posted May 8, 2013 Report Share Posted May 8, 2013 In the past I've always made peak power close to redline so I shifted @ redline. I'm not sure if thats the best option now. Is it better to shift sooner and come back into the higher TQ area of the power band or run it to redline. No matter what I have to shift into 5th due to short gearing. Here's my current power curve http://www.40roll.com/mywagon/mywrxvsmyg35.jpg Quote Link to comment Share on other sites More sharing options...
ICEMAN1647545504 Posted May 8, 2013 Report Share Posted May 8, 2013 6500 Quote Link to comment Share on other sites More sharing options...
-Alex- Posted May 8, 2013 Report Share Posted May 8, 2013 I agree, I think between 6000-6500 is the sweet spot. Make a couple passes shifting at 6000, then 6500, then 7000 trying to be consistent as possible and see what happens. Quote Link to comment Share on other sites More sharing options...
Patterson Posted May 8, 2013 Report Share Posted May 8, 2013 What are the Gear Ratios in the Trans? You want to base your shift RPM on the percentage of RPM drop after each shift. You want the after-rpm shift to land right at the beginning of the powerband. Quote Link to comment Share on other sites More sharing options...
AudiOn19s Posted May 8, 2013 Report Share Posted May 8, 2013 What are the Gear Ratios in the Trans? You want to base your shift RPM on the percentage of RPM drop after each shift. You want the after-rpm shift to land right at the beginning of the powerband. This...gear spacing is important. need to consider cost / benefit of how far past peak power you shift in comparison to where the next gear lands in both the power and torque curve. Quote Link to comment Share on other sites More sharing options...
Forrest Gump 9 Posted May 8, 2013 Report Share Posted May 8, 2013 Rule of thump is right pass peak power Quote Link to comment Share on other sites More sharing options...
thorne Posted May 8, 2013 Author Report Share Posted May 8, 2013 Here's my ratios (Ratios -- 3.083 / 2.062 / 1.545 / 1.151 / 0.825) If I remeber right 3.9 final http://www.rallispec.com/Subaru%20Gear%20Chart.htm I'm US 5speed with RA gears Quote Link to comment Share on other sites More sharing options...
thorne Posted May 8, 2013 Author Report Share Posted May 8, 2013 I really think the 4-5 shift is killing me but I can go fast enough in 4th (Can't spin motor fast enough) Quote Link to comment Share on other sites More sharing options...
Patterson Posted May 8, 2013 Report Share Posted May 8, 2013 (edited) http://www.columbusracing.com/forums/picture.php?albumid=738&pictureid=7181 Gear Ratios Shift RPM RPM after Shift 3.083 0 2.062 7500 5016 7000 4682 6500 4347 6000 4013 5500 3679 1.545 7500 5620 7000 5245 6500 4870 6000 4496 5500 4121 1.151 7500 5587 7000 5215 6500 4842 6000 4470 5500 4097 0.825 7500 5376 7000 5017 6500 4659 6000 4301 5500 3942 I would say shift at 7K. Edited May 8, 2013 by Patterson Quote Link to comment Share on other sites More sharing options...
Tripleskate Posted May 8, 2013 Report Share Posted May 8, 2013 What are the Gear Ratios in the Trans? You want to base your shift RPM on the percentage of RPM drop after each shift. You want the after-rpm shift to land right at the beginning of the powerband. Exactly. With gear spacing in mind, I would till shift right at redline. The VQ's engines like to rev a bit, and if you shift at 7, you'll land at about 4500-5000, which is part of their happy spot. For the Subi, it's a bit different since it's turbo-charged. You want to shift at the highest RPM point possible (relative to where it's making power) to keep the turbo spinning as fast as possible for the next gear. Looking at that graph you could take it to at least 6500rpm and be golden. Quote Link to comment Share on other sites More sharing options...
turbospec29 Posted May 8, 2013 Report Share Posted May 8, 2013 I really think the 4-5 shift is killing me but I can go fast enough in 4th (Can't spin motor fast enough) Taller tire? Quote Link to comment Share on other sites More sharing options...
thorne Posted May 8, 2013 Author Report Share Posted May 8, 2013 I don't think a taller tire will fit and right now redline is 6700rpm. Quote Link to comment Share on other sites More sharing options...
Quicksand Jesus Posted May 8, 2013 Report Share Posted May 8, 2013 How fast can you go in 4th if you would rev it to 7000? When I had my RA gearset I would run 4th off the limiter and come through the traps at 112. But I was making less HP and TQ than you. Quote Link to comment Share on other sites More sharing options...
Rally Pat Posted May 8, 2013 Report Share Posted May 8, 2013 For what its worth, the 90's WRC Imprezas all shifted well before redline. Quote Link to comment Share on other sites More sharing options...
thorne Posted May 8, 2013 Author Report Share Posted May 8, 2013 How fast can you go in 4th if you would rev it to 7000? When I had my RA gearset I would run 4th off the limiter and come through the traps at 112. But I was making less HP and TQ than you. So previously on my 2.0 thats how I did it. I stayed in 4th and hit the rev limiter and ran 12.3@112 (@333awhp 333awtq). But I'm trying to go 11's this year. Sounds like i need upgraded cams... Quote Link to comment Share on other sites More sharing options...
Quicksand Jesus Posted May 9, 2013 Report Share Posted May 9, 2013 Gonna need cams and a bigger turbo and 26" tires. Hahaha Quote Link to comment Share on other sites More sharing options...
thorne Posted May 9, 2013 Author Report Share Posted May 9, 2013 Yeah I know I can go faster then 12.3 I have 35 more hp and gobs more tq. Quote Link to comment Share on other sites More sharing options...
Sam1647545489 Posted May 9, 2013 Report Share Posted May 9, 2013 Yeah I know I can go faster then 12.3 I have 35 more hp and gobs more tq. Get a better driver Quote Link to comment Share on other sites More sharing options...
AndMetal Posted May 9, 2013 Report Share Posted May 9, 2013 For what its worth, the 90's WRC Imprezas all shifted well before redline. I shaved a little more than 0.2 seconds off my 1/4 mile time just by shifting from 1st to 2nd at about 5k or so which I think put me between 3k and 4k once I hit 2nd. This is with a 4EAT and a TD04 (stage 2 @ 19.5 psi) though. If only I could do the same for 2nd to 3rd, I should be able to break 13.5 and 100 mph pretty easily. Based on Patterson's math, I say shift @ 5500-6000 in every gear. Quote Link to comment Share on other sites More sharing options...
Mr. Jones Posted May 9, 2013 Report Share Posted May 9, 2013 Get a better driver http://i.imgur.com/9TrbHaZ.jpg Quote Link to comment Share on other sites More sharing options...
thorne Posted May 9, 2013 Author Report Share Posted May 9, 2013 Get a better driver Hence this thread trying to improve my driving. Launching should be fine once i swap tires I used to cut 1.8's almost every time. I've also got the ability to do No lift to Shift now so that should help. Like I said wasn't sure about shift points. I feel like I should shift 1-2 2-3 and 3-4 @ ~6500 and run 4th to 7000 and shift if need be. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.