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04-27-2008, 10:46 PM | #1 |
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Anyone do CDV (Clutch Delay Valve) Mod??
If you are new to what this is heres the scoup:
http://www.zeckhausen.com/CDV.htm --here's the thread the topic died in - http://www.m3post.com/forums/showthr...&highlight=cdv so simply there is a cdv in the e92 m3 i have heard it makes an improvement in the 335 feel mostly between 1st and 2nd.. anyone do this mod yet on an m3? RissRacing.com makes a fit all bmw 6MT model for $29 -that would fit? or is this mod not worth it..? i dont see how it could harm the car at all if you drive correctly.. Last edited by rawedge2; 04-27-2008 at 10:56 PM.. Reason: .. |
04-27-2008, 11:16 PM | #2 |
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dont knwo but it seemed a big deal inthe e46 M3 - I never did it - the car shifted fine for me.
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04-28-2008, 05:54 AM | #3 |
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I plan on doing it at some point. I never took the CDV out of my E46, but I'd love to feel the car without it, or with a modified one.
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05-01-2008, 12:22 AM | #5 |
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Yes, I removed it yesterday. I like it much better without it.
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05-16-2008, 06:03 PM | #7 |
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What exactly does it feel like without the CDV? Does it make the pedal travel resistance more linear? I'm having trouble getting used to my clutch right now as is and might be interested if someone can explain what it feels like to them before & after. Thanks!
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05-17-2008, 07:00 PM | #9 |
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All the CDV valve dose is reduce the internal size of the clutch line, thus limiting the amount of fluid that is able to pass though, as deturmined to be the best rate by BMW. It actually makes the clutch slip slightly, and causes additional wear, and keeps anyone from shifting faster then they deturmined.
All you have to do is remove the valve and bolt the line back together, then re-bleed the system. You can also pull the CDV out and simply drill the hole out to the size of the clutch line and then put it back in. The one Riss and others sell are just stock units that have been drilled out - anyone can do it. This also keeps things looking stock so if anything clutch-wise goes wrong BMW can't see it was modified. It defintely makes a difference, I did it on my old E46 M3 and will be doing it on my new E92 shortly! Hope this helps...
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05-20-2008, 05:30 PM | #10 |
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Simply remove it. Nothing else. You can bolt the line up directly without the CDV.
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05-20-2008, 11:20 PM | #12 | |
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Quote:
is there a difference in feel? does the bite point differ? does the bite point require less pedal travel eg if you need to half clutch? what do you mean by perfect shifts? does it affect the gear shifting? thanks for your time in answering my questions. cheers |
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05-22-2008, 12:28 PM | #13 | |
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It also makes the shift from first to second much smoother and easier. It's really quite an easy mod to do, and there is no need to buy the aftermarket parts, just drill the existing one out or simply remove it. Hope this helps...
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05-22-2008, 04:01 PM | #14 |
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Here's the DIY
http://www.e90post.com/forums/showthread.php?t=29828 |
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05-23-2008, 01:07 AM | #15 | |
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cheers |
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06-07-2008, 09:18 PM | #17 | |
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Frankly, I felt no difference when I had my E46 M3 one removed after warranty.
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06-11-2008, 04:27 PM | #18 | ||||
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06-11-2008, 07:34 PM | #19 | |
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CDV modification
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06-18-2008, 02:54 AM | #20 | |
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If you need help feel free to PM me I'm on at 1am to answer questions....any other vendors doing this? Thanks! |
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