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BMW 3-Series (E90 E92) Forum
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CDV hole diameter?
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| 06-03-2010, 12:15 PM | #2 |
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Colonel
 
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I think both are the same. The only difference being the modified one has the guts punched out.
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E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler.
Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile. |
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| 06-03-2010, 01:08 PM | #3 | |
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You can just take the stock out and push the guts out and put it back, you don't need to buy anything, but you can if you want to keep the OEM. |
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| 06-03-2010, 02:12 PM | #4 |
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I'm just curious because I have a CDV from a M3 and wanted to see the diameter difference between it and a 335/328 one before I do the swap. Looking through the M3 one I really don't see anything in there to punch out? The rumor is the M3 CDV is wide open and less restrictive.
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| 06-03-2010, 03:19 PM | #5 | |
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| 06-03-2010, 03:32 PM | #6 | |
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 I would like to see if there is any difference.
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E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler.
Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile. |
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| 06-03-2010, 05:23 PM | #7 |
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From what I recall when I replaced mine 2 years ago, the stock CDV has a needle sized hole. My RR modified CDV has a larger hole of say, like a medium sized nail.
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| 06-03-2010, 05:29 PM | #8 | |
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Quote:
 can do you for you..."E92 M3 does not have Clutch Delay Valve (CDV):" http://www.m3post.com/forums/showthread.php?t=153462 And to those who want a pic reference of a stock e9x 3 series CDV to a modified one: Stock:  Modified:  I would think it's best to go with a modified CDV *just in case* a dealer ever decides to look at your CDV because they are identical e9x 3 series parts from the outside. |
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