[chris55552]

So I read about the clutch delay valve mod and worked up the courage to attempt it. While doing so I bent the hard line that connects the cdv, not thinking it would have an impact. Well sure enough it was shifting smoother, until about 3 weeks after I pulled away from a dead stop and ran the rpms up to about 5500 rpm depressed the clutch and shifted from first to second and wham all hell broke loose. Something went terribly wrong, I lost the ability to shift gears while moving, I get it home and look under the vehicle and the bell housing inspection hole I noticed the anti friction material thats dark a cloth looking was all mashed together and I pulled some of the fabric out of the inspection hole and the car has been down since that fateful day. Any ideas what I may have done to it?

[Brian86]

Ummm... what?

"bell housing inspection hole I noticed the anti friction material thats dark a cloth looking was all mashed together and I pulled some of the fabric out of the inspection hole"

So, you're saying there is fabric debris inside your bellhousing?

Pull the transmission off. I don't really see how that is related to the clutch choke.

[oVeRdOsE.]

yeah I dont get what's happening.

This mod cost me a towing, because the flexible hose fitting was rusted, and the clip wan't clipped all the way in. Took 3 weeks before the clip pop out.

I did the mod on my other e90, and this time I pull fcking hard and pressurized the system @30psi for the bleeding procedure.

If you broke the hard twisted line, FCP sell it.

https://www.fcpeuro.com/products/bmw...xi-21526765790

[Tambohamilton]

Originally Posted by chris55552

So I read about the clutch delay valve mod and worked up the courage to attempt it. While doing so I bent the hard line that connects the cdv, not thinking it would have an impact. Well sure enough it was shifting smoother, until about 3 weeks after I pulled away from a dead stop and ran the rpms up to about 5500 rpm depressed the clutch and shifted from first to second and wham all hell broke loose. Something went terribly wrong, I lost the ability to shift gears while moving, I get it home and look under the vehicle and the bell housing inspection hole I noticed the anti friction material thats dark a cloth looking was all mashed together and I pulled some of the fabric out of the inspection hole and the car has been down since that fateful day. Any ideas what I may have done to it?

Sounds like you destroyed the clutch plate, by shifting too aggressively...or just really unfortunate timing, but I doubt that. New clutch, and probably new flywheel time.

[chris55552]

Originally Posted by Tambohamilton

Sounds like you destroyed the clutch plate, by shifting too aggressively...or just really unfortunate timing, but I doubt that. New clutch, and probably new flywheel time.

thanks for the feedback, would you recommend doing a cdv next go round?

[Tambohamilton]

Depends if you plan on being aggressive with it? Or if deleting the valve solved any issues for you?

DMFs don't like big shock loads, nor does the clutch, so you need to bear in mind that replacement of both will be needed more often if you're aggressive on the clutch.

[chris55552]

im a very amateur mechanic, I think I confused a bunch of people with inaccurate terms initially. Its actually the transmission inspection cap where the fabric was visible after that faiful day everything went wrong. Im reposting the topic and adding a pic of what i am seeing the fabric in. Prior to this happening you could look inside the inspection hole and see the disc and everytihing looked normal, afterward it looked like a furry animal crawled inside it and died there alll the fabric was a a big messy ball. My understanding is its the antifriction material that I was seeing. Sorry for the bell housing term being thrown in there, I bet that did throw some folks for a loop and if nothing else had people wondering is this guy on crack?? LOL.

[chris55552]

Originally Posted by Brian86

Ummm... what?

"bell housing inspection hole I noticed the anti friction material thats dark a cloth looking was all mashed together and I pulled some of the fabric out of the inspection hole"

So, you're saying there is fabric debris inside your bellhousing?

Pull the transmission off. I don't really see how that is related to the clutch choke.

im a very amateur mechanic, I think I confused a bunch of people with inaccurate terms initially. Its actually the transmission inspection cap where the fabric was visible after that faiful day everything went wrong. Im reposting the topic and adding a pic of what i am seeing the fabric in. Prior to this happening you could look inside the inspection hole and see the disc and everytihing looked normal, afterward it looked like a furry animal crawled inside it and died there alll the fabric was a a big messy ball. My understanding is its the antifriction material that I was seeing. Sorry for the bell housing term being thrown in there, I bet that did throw some folks for a loop and if nothing else had people wondering is this guy on crack?? LOL. It can be difficult helping someone who doesnt know what their talking about, thanks for attempting.

[bmwe90555]

I am also trying to do the cdv on my e90. I got the two pins that hold it together out. The old cdv disconnect but it’s still attached to the line and will not budge. Any ideas. I added some pictures.

[chris55552]

yes make sure there is no pressure in the line and if its stuck right there, I promise if you force it, it will break free. you can use some pliars to wiggle it off, what I did was put a rag under the pliars in between the CDV and the metal teeth so nothing bites into the plastic. The same exact thing happened to me and im happy to report the pliar method worked. Another option is keep going further down the hydraulic line and disconnect it at the slave cyinder. ( Where the aluminum zig zag clutch pipe connects to the slave cylinder, you just have to be certain that your pins are out and if I were you I would open the bleeder valve on the slave and let fluid run out to release pressure. Im pretty sure there is a rubber cap between the clutch pipe and some tiny o rings that are making the connection points more like suction points but dont be afraid to man handle it, just take precautions with a rag to avoid damaging anything. Let me know how it turns out. Your gonna have hell bleeding that clutch line no matter what so go ahead and disassemble what you need to make life easier. And when you get to the bleeding process, invest 100 bucks in a fluid extraction pump from harbor freight or something similar it will save you days of agony trying to get all the damn air out of those lines. It truly is a pain in the ass on bmws