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Breaking in my Exedy twin...

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Old Jul 5, 2004 | 07:02 AM
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Default Breaking in my Exedy twin...

I want to make sure I break this in properly, so any thoughts/suggestions/info appreciated. As far as I can find in the literature it call for 750 miles normal driving. I've got about 530 highway miles and about 300 miles regular driving on it now. Hoping to add some more thursday and going to MIR on Friday. Should have at least another 300 regular miles on it by then.

BTW, the new driveline setup is sweet, should have done the hurst shifter along time ago. I'm gonna reserve my opinion on the Exedy twin until I get some more time and some 1/4mi runs with it, but my initial impression is "wow"! I really think this setup is going to give me better consistency in ETs and as always hoping to shave another tenth or two.

Again, any thoughts appreciated...
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Old Jul 5, 2004 | 11:38 AM
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Default Re: Breaking in my Exedy twin... (IFLUBYU)

IMO...the important thing is not highway miles but more stop and go....light load....driving.....cool down. DO NOT hammer it...trust me. Mine got glazed and it was on/off and not driveable. My entire driveline needed to come out
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Old Jul 5, 2004 | 09:15 PM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

IMO...the important thing is not highway miles but more stop and go....light load....driving.....cool down. DO NOT hammer it...trust me. Mine got glazed and it was on/off and not driveable. My entire driveline needed to come out
Yeah, not really counting the highway miles. Gonna hike up to Atlantic City and take 40 all the way there and back. Thats a good 180 miles at 35-55mph peppered with stop lights, traffic circles, the whole nine yards.

Anyone know what adjustments they are talking about at 750 and 1500, and then every 7500 miles?
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Old Jul 5, 2004 | 09:23 PM
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Default Re: Breaking in my Exedy twin... (IFLUBYU)

Anyone know what adjustments they are talking about at 750 and 1500, and then every 7500 miles?
Hell, I would like to know that too. Never heard of any adjustments to be made after some miles.
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Old Jul 6, 2004 | 05:28 AM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

Hell, I would like to know that too. Never heard of any adjustments to be made after some miles.
From (exedy) http://www.daikin-clutch.com

12. Road test vehicle and never abuse a newly fitted clutch. Allow 750 mi break in and always adjust free travel on your new clutch at 750 mi and 1500 mi. Thereafter, adjust at every 7500mi.
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Old Jul 6, 2004 | 07:49 AM
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Default Re: Breaking in my Exedy twin... (IFLUBYU)

Hmmmmm, still not sure what is "adjustable" on these clutches........
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Old Jul 6, 2004 | 07:57 AM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

The one thing they stressed was to drive it easy and do not hammer on it at all for the first 400 miles or so. But, I think this included letting the clutch in and out (around town driving). I don't think highway miles would get it done (any thoughts).
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Old Jul 6, 2004 | 08:07 AM
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Default Re: Breaking in my Exedy twin... (J-Rod)

I agree 100%. And trust me the break-in is crucial for this clutch. Mine did in fact get glazed and it was undriveable.......on/off and nothing in between. The only way tto take off was to rev to 2500+ and let it out. If you were on a incline you were in trouble.
The one thing they stressed was to drive it easy and do not hammer on it at all for the first 400 miles or so. But, I think this included letting the clutch in and out (around town driving). I don't think highway miles would get it done (any thoughts).
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Old Jul 6, 2004 | 08:29 AM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

Hey guys, I have been thinking about replacing my Z06 clutch with a twin Exedy. With a proper break-in of the new unit, how did you guys find it behaved on the street? Specifically, was there any chatter or the on/off characteristic of high performance clutches when taking off from a stoplight?
Appreciate the help and thanks.
Joe
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Old Jul 6, 2004 | 08:45 AM
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Default Re: Breaking in my Exedy twin... (C54FUN)

Hey guys, I have been thinking about replacing my Z06 clutch with a twin Exedy. With a proper break-in of the new unit, how did you guys find it behaved on the street? Specifically, was there any chatter or the on/off characteristic of high performance clutches when taking off from a stoplight?
Appreciate the help and thanks.
Joe
I am still holding back on my official review of the clutch, until I get a fuller experience with it. But so far I love it. Some of that may have to do with also having put in the McLeod adjustable master cylinder, which I highly recommend.

By the time I get to the track on Friday, I should have about 1500 miles total, and half of that "normal driving", on the clutch. I'm thinking that should be good enough to start draggin' it.

Anyone one know what they are referring to on adjusting the free travel?
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Old Jul 6, 2004 | 10:07 AM
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Default Re: Breaking in my Exedy twin... (IFLUBYU)

The engagement period on the pedal probably changes slightly from time to time. If you have an adjustable master, you should adjust it accordingly so you are still getting full release. This is probably just a precaution so that the engagement doesn't get too close to the floor, causing the clutch to never disengage, causing shifting problems/extreme premature wear of clutch.

Dope
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Old Jul 6, 2004 | 10:28 AM
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Default Re: Breaking in my Exedy twin... (Dope)

I only had about 200 mi. on my twin when I took it to the track for 10-12 6500 RPM launches. I hammered it a few times on Et Streets during break in also. 3000mi. on it now with no problems at all.
I don't think the break in is as critical as it is with other clutches. JMO
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Old Jul 6, 2004 | 10:33 AM
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Default Re: Breaking in my Exedy twin... (Flyin'Brian)

Oh, and FYI, the literature I received with my clutch said 300 or 350 mile break-in. I will try to find it again.

I only have 200 but I've already hammered it a few times. Seems to be fine.

In fact, I seem to remember when this clutch first came out, a few people mentioned that there was NO break in period. Anyone remember that?

Dope
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Old Jul 6, 2004 | 11:26 AM
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Default Re: Breaking in my Exedy twin... (Dope)

More useless info...
http://www.daikin-clutch.com/products/PDF/Corvette.pdf
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Old Jul 6, 2004 | 11:51 AM
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Default Re: Breaking in my Exedy twin... (J-Rod)

Its useless..but more than any other supplier gives..hehe

For whats its worth, The development clutchs from Dainken and there engineering staff said no break in for the cermametalics on test .


Phil
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Old Jul 6, 2004 | 01:11 PM
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Default Re: Breaking in my Exedy twin... (RoadRebel)

For whats its worth, The development clutchs from Dainken and there engineering staff said no break in for the cermametalics on test .
I'm shocked by this. Mine definitely needed break-in.
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Old Jul 6, 2004 | 01:16 PM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

Every aftermarket clutch I have ever had in my, I was given the same break in instructions by my tuner.

If you are in a hurry, go to an empty street and do a lot of stop and go driving or go sit in rush hour for a while.

I had both of them broken in in less than 2 full days and both have/ lasted me for a while.

Maybe they say 300 or 500 miles because they are not expecting you to do much stop and go per mile.
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Old Jul 6, 2004 | 01:24 PM
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Default Re: Breaking in my Exedy twin... (IFLUBYU)

I got stuck in stop n go for about 25-30 mins the 2nd day I had my clutch. I think that was all the break-in I needed. It wasn't like slow moving traffic, it was 2mph...stop. 2mph...stop. Wouldn't even get the clutch out before you had to put it back in.

I expected to see flames shooting out from my bellhousing but so far so good.

Dope
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Old Jul 6, 2004 | 04:13 PM
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Default Re: Breaking in my Exedy twin... (Buckmaster)

I'm shocked by this. Mine definitely needed break-in.
Don't be shocked...it's true. Why did you think you needed to break it in?
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Old Jul 6, 2004 | 10:35 PM
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Default Re: Breaking in my Exedy twin... (Flyin'Brian)

Don't be shocked...it's true. Why did you think you needed to break it in?
Mine went from install to the dyno adn it was hammered. It got glazed due to that. Tom from Carolina said that should NOT have happened and needed some street time before the dyno.
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