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The Ultimate Evo 8/9 Transmission Failure Survey

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Old Oct 9, 2007 | 02:23 PM
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The Ultimate Evo 8/9 Transmission Failure Survey

I was curious, so I whipped up the following survey. Does it warrant a sticky?

http://www.esurveyspro.com/Survey.as...c-faff66e5e8b4

It's purpose is to stratify failures across models, as well as give some statistical insight to failures as a whole and is not intended to isolate 6spd MR failures (although that is covered).

I tried to ask questions that were more or less relevant and plan on having some professional statisticians here at work give us a somewhat edumacated breakdown.

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Old Oct 9, 2007 | 02:34 PM
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Filled it out once (Wouldnt let me do it twice for each car) except for build date cause I didnt feel like running to the car
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Old Oct 9, 2007 | 02:58 PM
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thanks.. I think it probably sets a cookie in your browser... If you did one in IE and one in Firefox that should work, or if you clear out your cookies.

For everyone else.. PLEASE include build/mfg date. thats a pretty interesting piece of information
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Old Oct 9, 2007 | 03:03 PM
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Ill grab hers when before I fill it out again
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Old Oct 9, 2007 | 04:23 PM
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You may want to add a question about the status of the stock clutch line restrictor pill.
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Old Oct 9, 2007 | 04:27 PM
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Okay, just finished it ...

Also, there is no option for "No Failure" on the fluid selection at the bottom.
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Old Oct 9, 2007 | 05:24 PM
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Originally Posted by TouringBubble
You may want to add a question about the status of the stock clutch line restrictor pill.
There is a restrictor in the clutch line?
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Old Oct 9, 2007 | 06:49 PM
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Originally Posted by dazed01
There is a restrictor in the clutch line?
Yes. Its at the slave cylinder. It makes it so it when you drop the clutch, It doesnt have a hard impact. its slow the enganging at the expensive of burning the clutch a lil.
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Old Oct 9, 2007 | 09:00 PM
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25 respondents so far.. I'd like to aim for 100 to get a decent sample size.. c'mon folks it only takes 3 minutes
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Old Oct 9, 2007 | 09:18 PM
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Originally Posted by Evo_Kid
Yes. Its at the slave cylinder. It makes it so it when you drop the clutch, It doesnt have a hard impact. its slow the enganging at the expensive of burning the clutch a lil.
so true
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Old Oct 10, 2007 | 04:46 AM
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The thing about the clutch line pill is that it's there as a safety measure, but people remove to "help" with launches. Doing this is kind of like taking knee pads off of the drivetrain. It's much easier to damage something on a launch after doing this.

The funny thing is that with a slight adjustment of your technique, you can launch just as well with the pill in place. I've personally pulled a 1.62" 60' on the stock clutch and stock Advans with the pill in place. I average 1.72" or so.

With DRs or slicks the pill might cause too much slip, but not many people here with DD Evos run at the track with sticky tires.
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Old Oct 10, 2007 | 09:58 AM
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Originally Posted by TouringBubble
The thing about the clutch line pill is that it's there as a safety measure, but people remove to "help" with launches. Doing this is kind of like taking knee pads off of the drivetrain. It's much easier to damage something on a launch after doing this.

The funny thing is that with a slight adjustment of your technique, you can launch just as well with the pill in place. I've personally pulled a 1.62" 60' on the stock clutch and stock Advans with the pill in place. I average 1.72" or so.

With DRs or slicks the pill might cause too much slip, but not many people here with DD Evos run at the track with sticky tires.
Yeah.

I took it off on my VIII, so I was always scaried Id drop it to fast and break something, which in turn would make me drop it to slow and burn a lot.

On my IX, I left it in. Now i just drop and let the restrictor do the work. I have gotten consistent 1.7-1.8 60's
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Old Oct 10, 2007 | 04:36 PM
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Ok, about 35 responses so far.. lots of 03s and 06 MRs.. need more samples people some RS and 05MRs

some interesting tidbits
42% have experienced some form of transmission failure
only 1 failure at the track, 3 at the dragstrip
no respondents are running a tranny cooler


c'mon folks.. theres a few thousand of you guys.. can someone sticky this so we could get more data? a sample size of 35 isn't going to be all that accurate.
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Old Oct 11, 2007 | 09:36 AM
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I filled out the survey, but didnt see an option for reverse gear?
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Old Oct 11, 2007 | 07:08 PM
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will do this tomorrow morning...
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