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04-01-2014, 06:13 PM | #133 | |
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http://www.m3post.com/forums/showthr...highlight=diff
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04-01-2014, 09:44 PM | #134 | ||
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It seems we repeat many topics, but to new audiences. Quote:
The dyno chart used in this test should be pretty similar to you (give or take).
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04-02-2014, 08:46 AM | #135 |
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Fwiw, have the 3.45 and do love it. Was primarily added for road course work and have never launched or raced in any top speed events, nor plan on it. Live downtown Chicago and in gear acceleration really comes in handy around here, and "value" can always be debated. It's not cheap and agree with all the simulations, but for my application do think it has merit. As you were...
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04-02-2014, 01:52 PM | #136 |
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Again, although accurate absolute performance levels are not a prerequisite for accurate A to B comparisons for things such as a FD mod, I'm still curious about the overall low levels of performance here. 0-60 in 5 seconds and 13.3-13.6 1/4 mi times. These are substantially lower than most magazine times and lower than my CarTest results using crank power and 12% or so total losses. Any idea why these sims show such underperformance?
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04-02-2014, 02:11 PM | #138 | |
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Last edited by regular guy; 04-02-2014 at 02:28 PM.. Reason: Should be: half tank of gas... |
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04-02-2014, 02:19 PM | #139 | |
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if performance and handling should become noticably better, you need to switch the lsd to a ramped one. as i wrote in my lsd shootout thread, forget the osgiken. the titan is better but needs to be set up quite different than it comes in stock setup. drexler gt4 is quite good out of the box but expensive. i have made some drexler "replikas" for not even half the money but i am located in germany. |
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04-02-2014, 09:58 PM | #140 | |
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I don't really see a need to run the changes to the FD as the delta's will be pretty well identical to yours.
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04-22-2014, 04:20 PM | #141 | |
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04-23-2014, 04:15 PM | #142 | |
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so if you go for a drexler in a funtool, get one with preload. it is set quite ok. take the drexler without preload if you need the maximum performance with a minimum of understeer for a skilled racedriver that wants to win races. but even top racecars are setup with preloaded lsd units. take the z4 gt3 for example. until 2012 they used a drexler with nearly no preload. afterwards they used a xtrac which was preloaded again. so it depends pretty much on what the lsd manufacturer suggests the customer to use. drexler likes non preloaded setups for track cars. but they also want you to rebuild it twice a season. if you dont want to change anything inside the lsd before installation, i would recommend to get a preloaded drexler. if you want an individual setup that exactly fits your special needs (i.e. the drexler standard setup is not ideal for street use and auto-x), i can setup a unit individually. |
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01-06-2018, 08:35 PM | #143 | |
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01-06-2018, 10:10 PM | #144 | |
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01-08-2018, 10:23 AM | #145 | |
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Cheers,
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01-10-2018, 11:23 PM | #146 |
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I meant starting in 2nd gear. With the stock diff at 40 in 2nd rpms are about 4500 so with 4.10 I'm assuming I'd get a better jump being at a higher rpm at the same speed. I also have an 8600 rpm redline.
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01-11-2018, 08:19 AM | #147 |
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I meant 2d gear also, at 20-mph. At forty, you're too near the redline and you'll need to shift soon. The 4:10s advantage is 0-80-mph. At 40, you've given up most of your advantage.
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01-17-2019, 02:33 AM | #148 |
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Is it still possible to find an OEM 4.1 diff for a 6mt? Is there a part number for it? Or is it all just aftermarket now?
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01-17-2019, 04:27 PM | #149 |
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01-17-2019, 09:28 PM | #150 |
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01-18-2019, 02:20 AM | #151 |
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I'm 90% positive the turner one comes from diffsonline.com. Having said that I have a turner 4.10 diff from one of their GT cars which is sweet and sounds awesome on deceleration with an os giken LSD. I'm not aware of a stock 4.10 gearset but there could be.
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01-18-2019, 11:39 AM | #152 |
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Are you currently running it? Does it make 1st gear noticeably shorter?
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01-18-2019, 01:58 PM | #153 | |
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Dave
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01-18-2019, 02:21 PM | #154 |
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I've always wanted to do this and every time I cruise on the highway for any extended period I am cured of it and start wishing for a tall 7th gear with a shorter 3-6 gearset, but that's called a DCT and I don't like the downsides that come with that, soooo oh well
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