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Launch ruined my day :(

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Old Apr 22, 2006 | 01:29 AM
  #1  
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yummy


Last edited by PANGES; May 23, 2006 at 12:46 PM.
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Old Apr 22, 2006 | 02:45 AM
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Well, either the clutch slipped or you spun your tires. You didn't do both. Since the clutch smelled, and the rpms went up to 7k without really moving, I'd say you just fried your clutch. If your wheels were spinning, then that means the clutch was grabbing completely.

Anyway, welcome to the world of newbie-trying-to-launch-an-awd-with-too-much-slip-on-a-stock-clutch-with-the-restrictor-valve-still-installed (Mitsu did that on purpose just for you).
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Old Apr 22, 2006 | 02:49 AM
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what is this restrictor valve you speak of?

why would mitsu install this?
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Old Apr 22, 2006 | 02:53 AM
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It's the one that we've been talking about for 3+ years in tons of threads.

Mitsu installed it because of people like Panges who go out and try to launch with no experience on their 30k Evo so that they don't blow the t-case. Instead, it causes late and weak engagement of the clutch, which causes slipping, which causes heat, which causes the clutch to go out well before damaging any drivetrain components. Since the clutch is a wear item and not covered by warranty, then Mitsu saves tons of money.
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Old Apr 22, 2006 | 05:06 AM
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also a down side to removing the pill...especially with newbs

gotta learn sometime
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Old Apr 22, 2006 | 05:14 AM
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you are a silly rabbit. Honestly, wouldnt you just rather bog the launch instead of KILLING your car. work UP the the revs, and learn your car rather than jumping out and dropping the clutch 5.5k with out any descretion. c'mon now, you paid for the car, put your money where your mouth is and become and enthusiast before you become an enthusiast know what I mean?
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Old Apr 22, 2006 | 10:22 AM
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Originally Posted by Warrtalon
Well, either the clutch slipped or you spun your tires. You didn't do both. Since the clutch smelled, and the rpms went up to 7k without really moving, I'd say you just fried your clutch. If your wheels were spinning, then that means the clutch was grabbing completely.

Anyway, welcome to the world of newbie-trying-to-launch-an-awd-with-too-much-slip-on-a-stock-clutch-with-the-restrictor-valve-still-installed (Mitsu did that on purpose just for you).
I did a quick search on that restrictor valve and only came up with a few threads that were barely of much help... tried typing in "pill" and came to alot of boost pills. Is there another name for this valve to search for? lol. But from what I've gathered... is pretty much what you've said. I just fried the **** out of it. So I say i should try to start at4k and work my way up, then let out the clutch slower to let it engage a bit before going?
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Old Apr 22, 2006 | 11:13 AM
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besides drag race launches, does removing this restrictor help with daily driving or road course driving?

I'm not intrested in launching but if it'll somehow improve the feel of the clutch I'd might want to do this mod
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Old Apr 22, 2006 | 11:21 AM
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Panges, we refer to it as the "clutch restrictor." Doing an advanced search for those words will get you lots of results. No, do NOT start at 4k. You cannot launch at 4k without a ton of slipping, which is what burned your clutch to begin with. No, do NOT let the clutch out slower. That's EXACTLY why you burned it! You gave more gas than clutch, it overpowered the clutch, then you didn't move. You got it all backwards. You should probably just not launch.

Lagcisco, yes, removing the restrictor is VERY VALUABLE for daily driving and circuit racing. With the restrictor, you clutch doesn't engage right away - it's delayed. So, you think you're working the clutch pedal at a certain speed, but the actual engagement is much slower. It sucks. The downside is if you drive like a tool or do big clutch dumps, because then you'll kill the t-case.
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Old Apr 22, 2006 | 11:44 AM
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For one, I would rather glaze a clutch disk a little than damage my transfer case - but I'm not foolish enough to go out and *practice* launching for no real reason. My EVO has 23k on the odo with the stock clutch and it is still holding strong. I just don't abuse it.
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Old Apr 22, 2006 | 01:03 PM
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I just found out about this restrictor pill today. Never new about it, but it hasn't hurt my launches yet.
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Old Apr 22, 2006 | 01:09 PM
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at what rpm did you launch to get a 1.66 60' on the stock clutch with the res. pill still in the slave cylinder?
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Old Apr 22, 2006 | 01:33 PM
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Originally Posted by Danny23
at what rpm did you launch to get a 1.66 60' on the stock clutch with the res. pill still in the slave cylinder?
My 2-step is set at 5800.
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Old Apr 22, 2006 | 08:35 PM
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From: SNA / EWR
http://evomoto.com/tech_info.php?tPa...416e672a44ca8c
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Old Apr 22, 2006 | 11:56 PM
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Well... I went out and tried ONE LAST TIME today. This time at 5k and did a quicker clutch release with a tiny bit of slip and holy hell, it was fun. Afterwards, I smelled a tiny bit of burnt clutch, but not anywhere near as bad as yesterday. Anyways, i'm done launching.. jus had to see what the big deal was and i did.
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