All DISA N52s - Future Issue

[TheSt|G]

Originally Posted by 128Convertibleguy

Generally agree, I bought one.

But engine reliability, particularly auxiliary systems, seems to be the one place where the Japanese thrash BMW. I'm baffled why BMW fails to fix known issues, like water pumps and VANOS bolts, for years. Now this. It took them quite a while on the HPFP. The Japanese may have problems, but they are all over them. Does BMW not understand basic principles of quality improvement?

I'm really glad to have a CPO, with a total of six years of warranty on this kind of stuff. Hopefully, any weak/poorly installed parts will fail before then.

The difference is that most Japanese engines are little more than tractor motors. Those of a higher spec, like the B16B and such require constant valve adjustments and other more involved maintenance proceedures like their BMW counterparts.

You have to remember, for most of the world, the N52 is the second to the top spec engine, not the base spec that it is in the US.

[631twentyeighteye]

Whoops, didn't think that one through clearly i suppose. My manifold is off of a 09 so let's see how long it lasts.

[Obioban]

Originally Posted by TheSt|G

The difference is that most Japanese engines are little more than tractor motors. Those of a higher spec, like the B16B and such require constant valve adjustments and other more involved maintenance proceedures like their BMW counterparts.

You have to remember, for most of the world, the N52 is the second to the top spec engine, not the base spec that it is in the US.

And in the USA, where the _28 is the base engine, it doesn't have these issues.

Excited for them buying one to make a non failing version-- I'll hold off on doing the manifold swap till it's out!

[TheSt|G]

Originally Posted by Obioban

And in the USA, where the _28 is the base engine, it doesn't have these issues.

Excited for them buying one to make a non failing version-- I'll hold off on doing the manifold swap till it's out!

Indeed.

Holding off might not be a terrible idea. The install process for the DISA upgrade if they release one is essentially going to be the manifold swap.

[MarkkyyMan]

Originally Posted by TheSt|G

You have to go back 15 years to get a non-DISA I6.

Originally Posted by TheSt|G

Stock 128i has zero DISA valves, 3 stage has two.

Originally Posted by TheSt|G

I just meant to get an engine that was not offered with it.

I'm lost..

[TheSt|G]

Originally Posted by MarkkyyMan

I'm lost..

M52TU(Late 90s), M54(Early/Mid 00s), and N52(Mid 00s to early teens) were all offered in varients that have DISA.

M50(mid 90s) was the last engine that did not.

Stock us spec N52N(k) as found in the 128i has no DISA at all.