Quote:
Originally Posted by BringBackButtons
Your title says valve cover, your post says gasket, will offer both *data as I can.
I have done the following on my n55 x5
1: aftermarket gasket replacment only, og valve cover. Lasted 8,000 miles before og valve cover cracked internally.
2. Aftermarket valve cover and aftermarket gasket. Lasted 7,000 miles before manufacturing defect in cover (crack) in rear left corner (above downpipe)
3. Oem cover, oem gasket - lasted 3x,000 miles before pcv failure and crack in vacuum chamber occured. Again. Gaskets still operating.
4. Aftermarket aluminum valve cover, oem gaskets = time will tell.
On my M235, i replaced with OE cover and OEM gaskets only because its not my daily driver and that setup should *hopefully* last 5 or more years in which i consider it standard maintenance. My n55 X5 gets the dumb use mileage and im tired of doing valve cover replacements so i said "F$%! You plastic" and went with an aluminum one to hopefully stop the dumb pcv/internal vacuum cracks i keep encountering. Bonus? It offer pcv gasket quick replacements like b58s. I plan to do this change every other oil change.
I dont consider it any consolation buying from a lifetime warranty vendor. Besides the oem cover, all lasted a year or less and didnt want to replace with the same failing part.
So there you go, if you can get an oe or oem cover and use oe or oem gaskets I find tolerable results if you havent experienced my previous situations. So in 7 years I have done 5 valve cover repairs over 2 vehicles. One of those jobs that makes me think for my daily driver that gets dumb "transport" miles, ev might not be that bad...
If you are talking about n20/26 or b4x/b58, sorry, no data on those particular models.
Best of luck!
|
Crikey - How was the fitment of the Alu one? - Did it take much offering up/mating surface all mated fine?