Clutch Delay Valve

[fatboyoz]

Hi All,
Anyone had any experience with replacing the clutch delay valve, associated with the manual gearbox, with the modified valve supplied by this company? http://www.zeckhausen.com/cdv.htm
Thanks,
Colin.

[X5HogTown]

I highly recommend this mod as it eliminates a lot of jerking through 1st and 2nd. Wish I did this when I first bought it.

My shop modified the existing line. I don't think you need a new part for an X5.

[CGSTL]

I can highly recommend Dave Zeckhausen and trust his advice on these matters. I encourage you to consult back with him for questions about your CDV. He's a great guy.

Originally Posted by fatboyoz

Hi All,
Anyone had any experience with replacing the clutch delay valve, associated with the manual gearbox, with the modified valve supplied by this company? http://www.zeckhausen.com/cdv.htm
Thanks,
Colin.

[JCL]

I bought a modified valve from Zeckhausen and replaced the original in my wife's 325xi. I found that it greatly improved the start in first gear, and had a small effect on the 1-2 shift.

Each model BMW has a different CDV, with varying amounts of restriction, and resultant delay. Ones that have a lot of delay cause jerky shifts, while some models have absolutely no perceivable impact. If you notice the jerky shift, I recommend the mod. If not, it isn't worth doing just because it might be a problem, either you notice it up front or you don't.

It is perfectly OK to just remove the CDV and reroute the line, but the replacement valve is tidier.

Jeff

[UncleBob]

it's the easiest solution.