JamieP Posted February 2, 2017 Share Posted February 2, 2017 Auto diff on a manual v160/v161 may feel fast with the closer ratios but I can assure you it won't be. Car will be slower. Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 2, 2017 Share Posted February 2, 2017 (edited) I've gone for the 3.133 US spec ratio just as its closer to the JDM spec. I spin up to easy anyway lol That's the best ratio, ever wondered why yank cars are so fast? I have a 3.6 ratio on the M3 and trying to figure out how I can get a 3.1, looks like I may be able to use the e36 evo diff which is 3.15 Edited February 2, 2017 by JamieP (see edit history) Quote Link to comment Share on other sites More sharing options...
np89 Posted February 2, 2017 Share Posted February 2, 2017 Auto diff on a manual v160/v161 may feel fast with the closer ratios but I can assure you it won't be. Car will be slower. Whats the workings behind it? I love my auto diff. Acceleration is brutal! Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 2, 2017 Share Posted February 2, 2017 It's not rocket science dude, wheel turns faster and the car goes further down the road with each gear. Close ratios are good on low powered cars, but a supra (especially a single powered supra) has more than enough grunt to pull the gears. Quote Link to comment Share on other sites More sharing options...
np89 Posted February 2, 2017 Share Posted February 2, 2017 It's not rocket science dude, wheel turns faster and the car goes further down the road with each gear. Close ratios are good on low powered cars, but a supra (especially a single powered supra) has more than enough grunt to pull the gears. Yea but why would it feel faster but not be faster? Or do you mean over a longer distance? Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted February 2, 2017 Share Posted February 2, 2017 There are various factors that come into it, and it depends on what sort of driving you're doing. For example, closer ratio will increase acceleration through the gears, but will also mean you are changing gear more often. This can have a profound impact on quarter Mile times for example. There is also a school of thought that says that the wider ratio diffs help the turbo/s to spool up faster due to increased load, though I'm not sure how true that is, and wont pretend to understand My main issue with running the auto diffs with a manual box is it makes the car less usable for general driving. It increases cabin noise, and reduces cruising mpg as the engine is revving more. Quote Link to comment Share on other sites More sharing options...
JamieP Posted February 2, 2017 Share Posted February 2, 2017 You think it's faster because you are changing gear more often. Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted February 2, 2017 Share Posted February 2, 2017 That's the best ratio, ever wondered why yank cars are so fast? I have a 3.6 ratio on the M3 and trying to figure out how I can get a 3.1, looks like I may be able to use the e36 evo diff which is 3.15 Thanks Jamie, Its been a head ach this, nice to know using a new 3.1 final gear drice with a new OS Giken and SRD prop I should notice a difference, a well worth while mod.. Quote Link to comment Share on other sites More sharing options...
Supraleeturbo Posted February 2, 2017 Share Posted February 2, 2017 There's a big case diff for sale on here and Facebook ATM Quote Link to comment Share on other sites More sharing options...
el_bandido Posted March 4, 2017 Share Posted March 4, 2017 Can now thoroughly recommend a 1.5 way diff. I went with the Cusco, but oh my god is it a world of difference. It just grips and grips and grips now, I'm genuinely astonished at the difference between the torsen and a 1.5 way. Quote Link to comment Share on other sites More sharing options...
Supraleeturbo Posted March 4, 2017 Share Posted March 4, 2017 Can now thoroughly recommend a 1.5 way diff. I went with the Cusco, but oh my god is it a world of difference. It just grips and grips and grips now, I'm genuinely astonished at the difference between the torsen and a 1.5 way. Does it make any noise or wheel hop when you turn a corner Quote Link to comment Share on other sites More sharing options...
el_bandido Posted March 4, 2017 Share Posted March 4, 2017 No wheel hop at all, little bit clunky on the clutch in first at full lock (but that's probably because I'm still getting used to driving with it). The only place you will get noise is in a car park I reckon; on the road it's absolutely fantastic, you can feel it push you round corners where the back end would previously have started to wobble. It's like cheat codes, seriously. Quote Link to comment Share on other sites More sharing options...
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