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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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09-10-2013, 07:48 PM | #1 |
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Any interest in 4.5 final drive from Auto Factory?
I'm thinking of buying a few of these, one for myself and the rest for others to buy. For automatics, it should make the car feel much more responsive, with a gear ratio closer to the manual. If used in a manual, it will also enhance the acceleration - but you will loose MPG as the tradeoff.
I'm not a vendor, it's just a hard part to get in the US and thought others might want one. Should I move this to the "group buy" section? Do I have to be an oficcial vendor? Should I set up a ebay/amazon account? http://translate.google.com/translat...1&ie=Shift_JIS Sorry it's a little off topic. Mike
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09-10-2013, 08:54 PM | #2 |
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Have you found a solid price after shipping/duty? If not then you might want to consider other options. You're probably looking at $600+ per set by the time you get them in-hand. Heavy items are rather expensive to ship from Japan. There are other gear sets available with far less hassle.
I've not seen the gears in person but Weir Performance has a 4.56 set for $240 available here for the MKIII Supra. The factory gears are certainly nice but I'm not sure they're worth 2.5x the price. I have an MFactory 4.67 in my 6MT and can't tell a difference in quality between them and factory gears once installed. I doubt the Weir are any different. @PantsDants is getting a 4.88 for his 6AT from Weir. After much debate he decided this ratio made more sense with a slushbox and put it in-line with a 6MT. Thread is here: http://www.ft86club.com/forums/showthread.php?t=45217 @JimmyMac started a discussion on final drives that you might find of interest. Thread is here: http://www.ft86club.com/forums/showthread.php?t=45152 @Crossover Auto has a group buy on MFactory 4.44 and 4.67 gears at $600 shipped. I've never dealt with them but the price is competitive for that particular gear set. Thread is here: http://www.ft86club.com/forums/showthread.php?t=43835 . Last edited by 37; 09-10-2013 at 09:04 PM. Reason: Fixed link |
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09-10-2013, 09:17 PM | #3 |
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Thanks 37. I was just going around trying to assemble the links. Thank you for saving me the time hahah
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09-10-2013, 11:22 PM | #4 | |
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Quote:
I also heard of people using Lexus 250/300 gears but they were talking about find it at junkyards. 4.88 is a bit much for me, since it would limit second gear top speed in autox. I'd like to keep some of the MPG. 4.55 ~ 2500 in 6th = 70mph, 7400 in 2nd = 59mph. 4.88 ~ 2700 in 6th = 71mpg, 7400 in 2nd = 55mph Thanks for all the info! Mike
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09-11-2013, 04:04 AM | #5 |
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FWIW, I'm fairly certain (read: not absolutely sure) that any of the 8" Toyota ring and pinion sets (with the exception of the reverse ones in the Land Cruiser and some other trucks) will fit our diffs. Again, not for sure, but I'm basing this off the fact that the price I got from Weir was strangely similar to all of the other options for 8" kits I've seen online (Yukon, Precision Gear, etc.). I just went with Weir for the peace of mind that he markets the parts specifically for car differentials, not trucks. And also the fact that he flat out told me it works on IS differentials.
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09-11-2013, 04:25 AM | #6 |
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Really liking the idea of the 4.88 for the AT.
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09-11-2013, 04:55 AM | #7 |
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It makes sense for the auto but I think the manual is low enough.
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09-11-2013, 03:01 PM | #8 |
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09-11-2013, 04:51 PM | #9 |
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Here's some number for 225/40/18:
Code:
MT@4.10 1st 2nd 3rd 4th 5th 6th ------- ----- ----- ----- ----- ----- ----- 2000 10 17 24 30 36 47 2500 13 21 30 38 46 59 3000 15 25 35 45 55 71 3500 18 29 41 53 64 83 4000 20 33 47 60 73 95 4500 23 37 53 68 82 107 5000 25 42 59 75 91 119 5500 28 46 65 83 100 131 6000 30 50 71 90 109 142 6500 33 54 77 98 118 154 7000 35 58 83 105 127 166 7400 37 62 87 111 135 176 AT@4.10 1st 2nd 3rd 4th 5th 6th ------- ----- ----- ----- ----- ----- ----- 2000 10 18 26 36 51 63 2500 13 22 32 46 64 78 3000 15 27 39 55 77 94 3500 18 31 45 64 89 109 4000 21 35 52 73 102 125 4500 23 40 58 82 115 141 5000 26 44 65 91 128 156 5500 28 49 71 100 140 172 6000 31 53 78 109 153 188 6500 33 57 84 118 166 203 7000 36 62 91 127 179 219 7400 38 65 96 135 189 231 AT@4.56 1st 2nd 3rd 4th 5th 6th ------- ----- ----- ----- ----- ----- ----- 2000 9 16 23 33 46 56 2500 12 20 29 41 57 70 3000 14 24 35 49 69 84 3500 16 28 41 57 80 98 4000 19 32 47 65 92 112 4500 21 36 52 74 103 127 5000 23 40 58 82 115 141 5500 25 44 64 90 126 155 6000 28 48 70 98 138 169 6500 30 52 76 106 149 183 7000 32 56 82 115 161 197 7400 34 59 86 121 170 208 AT@4.88 1st 2nd 3rd 4th 5th 6th ------- ----- ----- ----- ----- ----- ----- 2000 9 15 22 31 43 53 2500 11 19 27 38 54 66 3000 13 22 33 46 64 79 3500 15 26 38 54 75 92 4000 17 30 44 61 86 105 4500 19 33 49 69 97 118 5000 22 37 54 76 107 131 5500 24 41 60 84 118 145 6000 26 45 65 92 129 158 6500 28 48 71 99 139 171 7000 30 52 76 107 150 184 7400 32 55 81 113 159 194 Mike
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09-11-2013, 09:31 PM | #10 |
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Amen man. Gears are crazy long in the AT. In 6th, gas mileage on the highway is pretty darn good though... My ideal state would be to keep a very efficient top gear, but alter the 1-5 on the AT. I'll sacrifice some efficiency in 6th to make the other 5 gears better though.
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09-12-2013, 01:21 PM | #11 | |
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Quote:
Really hoping the Weir gears work out well. I wasn't even willing to consider this mod at the $1000+ pricepoint, but if I can get gears+install for ~$500? That's something I'd strongly consider. Car's presently a lease though, so they may not be too fond of that haha. |
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09-12-2013, 08:38 PM | #12 |
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Yeah, at $500 I'd do it in a heartbeat once my warranty is up (1 year done!).
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09-12-2013, 08:41 PM | #13 |
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Seems fair most complain that have hwy speed limits of 80 are already saying "rpm too high"?
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