What is the different between N42 & N46

[wsonny]

Hi, can any sifu help me to explain what is the different between N42 & N46?

 

[Alex5522]

https://www.google.com.my/search?q=What+is+the+different+between+N42+%26+N46&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-USfficial&client=firefox-a&channel=rcs

 

[astroboy]

After reading the link above... wow... the cam timing tensioner and guide so fragile meh? Scary.. :42:

 

[anaksarawak]

After reading the link above... wow... the cam timing tensioner and guide so fragile meh? Scary.. :42:

They are made of plastic... why? BMW design the engine with such fragile component?

 

[astroboy]

To be exact, high wear resistance nylon parts for the benefit of lightweight, quiet and low cost.

Lower left, the tensioner..

 

[Iceduke]

AS / AB...shall we DIY this as well?

 

[astroboy]

AS / AB...shall we DIY this as well?

Guide:

Replace timing chian: http://tis.spaghetticoder.org/s/view.pl?1/07/03/84

Adjusting camshaft timing: http://tis.spaghetticoder.org/s/view.pl?1/07/09/89

Some special tools involved.. I'll pass on this. U folks do, I wipe your sweat can la.. :4:

 

[Iceduke]

lol...ok better not then haha

 

[ramon123]

the difference is n46 is the new one, maybe the material different

 

[zeedo]

When I rebulit my N42, these plastics were already brittle and probably won't be long before it cracks.

 

[astroboy]

When I rebulit my N42, these plastics were already brittle and probably won't be long before it cracks.

At what km or age?