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02-05-2007, 06:39 PM | #1 |
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GC/GF transmission strength
For those of you with swapped L's and maybe RS's (if they use the same tranny)
And are using a WRX or STi motor, how have they held up?
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02-05-2007, 06:43 PM | #2 |
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What do you meen by GC GF, usdm? jdm?
The jdm 5spd is quite a good transmition, but like everything else if you abuse it, it will break. The stock 1.8 and 2.2 tranny's are not as strong, but will hold up to the power as long as there is no 5K clutch drops or hard shifting. Kirill |
02-05-2007, 06:59 PM | #3 |
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i meant the stock transmissions on the mid 90s imprezas (obs,L,etc) i guess USDM..dont really plan on making the car i want to get "JDM"
sorry i wasnt clear enough |
02-05-2007, 07:57 PM | #4 |
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I'm also wondering this...Since I basically learned how to drive manual on my 95 L I've ground the gears a few times (>_<) I was just curious how much unintentional abuse can they take?
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02-05-2007, 08:03 PM | #5 |
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My guess is not very well. Reason I say this, is that the previous owner of my current Legacy went through 2 or 3 stock trannies with his 12-14 psi 16g setup (power levels about like a very lightly modded WRX). This was on stock Legacy turbo trannies, which I would imagine are as strong or stronger than that of a GC8.
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02-05-2007, 09:35 PM | #6 |
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Mine has held up just fine after 70k miles w/ stock engine, doing auto-x's, track stuff, etc.
And its still good as new after roughly 15k on the stage 2 wrx setup. I'm relatively easy on transmissions and clutches. |
02-05-2007, 09:58 PM | #7 |
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well if i were to get a brighton and do a wrx swap its not like id be doing burn outs with it
just some accelerated cornering when no one else is around.. ..and some spirited driving, no 5K rpm clutch drops or nothing. |
02-05-2007, 10:29 PM | #8 |
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It all depends on how you drive it.
Bang the gears and launch it all the time, and it'll break, no doubt. Slip the clutch, and take it easy on shifting, and it should last a long time. The 5-speed just can't deal with shock to the gears. It can hold steadily applied power, but can't be slammed on a regular basis. If you're gonna do that, get a 6-speed.... |
02-05-2007, 10:45 PM | #9 |
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the key to a surviving tranny is a gentle clutch. I went 13.4 on the stock L tranny. Lauched at 6k when I was at the track and really banged the gears.
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02-05-2007, 11:12 PM | #10 |
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hey turboL, you're the dude with the turbo'd 1.8L coupe right? how much hp are u getting out of it?
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02-06-2007, 01:46 AM | #11 |
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The RS tranny should be fine with a WRX motor. The L tranny might not be such a good idea tho. If you go easy on the L tranny you should be ok for a while but count on it failing.
cheers garrett |
02-06-2007, 01:01 PM | #12 |
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whats the difference between the RS and L transmissions?
some of the newer Outbacks and legacys use the 2.5 engine and im assuming they are similar if not the same to the L's |
02-06-2007, 03:54 PM | #13 |
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I swapped a 2.2 legacy turbo motor into a Brighton and used the 5MT. I had to change the clutch because it couldn't handle the torque, but otherwise it was fine.
It got replaced 2 years later when the main bearing was going out. |
02-06-2007, 07:53 PM | #14 |
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my rs tranny is holding up fine with my swap. im running cobb AP stage2 and exedy street clutch. i dont launch and i dont bang gears. i know a few people that drive harder on the rs tranny then i do and they have been holding up too. kyle
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02-07-2007, 04:51 AM | #15 |
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2nd gear burn outs on the stock rs tranny. not from dumping the clutch just from power. I think the shock is the worst for them so don't drop the clutch at 7k.
p.s. the gt4088r goes on next week. we will see what the tranny can really take. |
02-07-2007, 04:06 PM | #16 |
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I've got about 4k on my stage 2 wrx swap in my brighton and the brighton tranny is holding up just fine.
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02-07-2007, 05:18 PM | #17 |
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So you're going to run an sti engine with a gt40r with the stock rs trans? Good luck picking up the pieces of the trans off the road..
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02-13-2007, 08:38 PM | #18 |
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My 98RS trans didnt last too long after my EJ257 hybrid and it was only on wastegate boost. Second gear decided to it had had enough. I havent had the car too long though, it had no motor when I bought it. Owner said it spun a bearing, so maybe it wasnt completely my fault. Car only had 94k when the motor went. Think the previous owner was pretty rough on it. Through a stocker back in it last november and Ive been pretty easy on it till i can build up the original.
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02-14-2007, 08:52 PM | #19 | |
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Quote:
I'm on a '00 RS tranny w/ my EJ22T swap in my '99 Impreza L Wagon. We'll see how it goes.... I don't bang into gears, I just make the shift a smooth quick flow. I only do this because I've had experience with driving the tranny different ways. Rush it and it won't feel too good. I'll be looking into the Outback XT tranny, or the FXT tranny. If there's a JDM 6spd for a good price and condition, I'd take that. |
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02-14-2007, 09:14 PM | #20 |
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No I'm saying I have been running the stock RS tranny for over a year now with the ej257 and a gt35r .82ex. Now I'm putting a gt4088r on! If I do break the tranny it will be at the track. but I hope I can get a few more good passes out of it before then.
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02-14-2007, 09:43 PM | #21 |
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lol. It's all in the wrist huh?
cheers garrett |
02-14-2007, 10:24 PM | #22 |
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02-18-2007, 06:20 AM | #23 |
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Some people get away with it, and they claim all you have to do is shift properly, but I suspect there's a lot of luck involved, too. So, you can try it, but don't do it unless you can afford to replace the tranny, too. It's pretty common.
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02-18-2007, 04:37 PM | #24 | |
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Quote:
Perhaps..when/if I get the car its going to be a side project and not a daily driver but I still prefer something reliable then not (who doesnt? lol) I dont really plan on doing 5K launches, just occasional spirited driving and hopefully track days in the future and basically a cool car to drive around in, not that my OBS isnt cool, i like the sedan/coupe alot |
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