lever arms N62b48 intermediate lever arms

[Deffed 10]

Hello everyone,iv recently acquired a 650i with valvetronic issues namely intermediate lever arms. There 5 different versions 1-5 with very fine tolerances in lift and duration on each one. From what iv discovered, some are discontinued and there are some forms that say the 5 have been replaced with updated versions. If anyone can provide any updated information would greatly appreciated. 

Regard Reno.👍

[F10er 62]

On 8/19/2021 at 11:38 AM, Deffed said:

Hello everyone,iv recently acquired a 650i with valvetronic issues namely intermediate lever arms. There 5 different versions 1-5 with very fine tolerances in lift and duration on each one. From what iv discovered, some are discontinued and there are some forms that say the 5 have been replaced with updated versions. If anyone can provide any updated information would greatly appreciated. 

Regard Reno.👍

You will have to speak to a parts guy at a dealership. I looked the levers up in ETK and it says to refer to a Puma measure for the correct levers. Only dealers have access to this.

[Deffed 10]

1 hour ago, F10er said:

You will have to speak to a parts guy at a dealership. I looked the levers up in ETK and it says to refer to a Puma measure for the correct levers. Only dealers have access to this.

Thanks for you message,unfortunately my local bmw dealership team or at least the 2 people iv been dealing with had no idea what i was talking about so i had to go in and point the part out on cylinder head schematic drawing. 🤔😳

[F10er 62]

4 hours ago, Deffed said:

Thanks for you message,unfortunately my local bmw dealership team or at least the 2 people iv been dealing with had no idea what i was talking about so i had to go in and point the part out on cylinder head schematic drawing. 🤔😳

Sounds about right for a dealership........bloody hopeless. Maybe ask to speak to the Parts Manager or a Master parts advisor. They would have more experience.........you would think/hope.

The Puma number is in the photo below. Ask them to look that measure number up.

Edited August 24, 2021 by F10er

[F10er 62]

[Deffed 10]

52 minutes ago, F10er said:

Sounds about right for a dealership........bloody hopeless. Maybe ask to speak to the Parts Manager or a Master parts advisor. They would have more experience.........you would think/hope.

The Puma number is in the photo below. Ask them to look that measure number up.

Iv just got the bridge off the head that holds the cam,eccentric shaft and lever arms,the spring has slipped out of the guide on the lever arm,it crazy that part way through the spring completely leves the guide and expected to go back in the same spot,the springs are not retained in any way and the lever arm is only retained by the spring.

20210824_171333.heic 20210824_170753.heic

[Lubed 55]

What is the fault with the intermediate levers/valvetronic?

[Deffed 10]

49 minutes ago, Lubed said:

What is the fault with the intermediate levers/valvetronic?

I brought it not running,report said no compression cylinder 3,further inspection broken intermediate lever arm. Recommendation complete engine replacement. I done some research found out from mid 04 till day 345 04 company that makes the arm ran a dodge batch. I was progressing on getting the components out and noticed 3 out of position,had to remove the bridge to see it had just slipped out,workshop mustn't checked properly. Futher inspection lever arms made after the dodge batch but are quite warn,some wear in cam possible oil starve at some point.

[Deffed 10]

Heres a wee clip,first part is under side of valvetronic bridge cylinder 2&3 lever arms out,lots of literal movement on large bearing that one runs agains main cam also wear on cam,the tube thing at the top of shot is oil feed tiny wee holes that are ment to oil the cam lobes,second part is the head from m60b40 n62 grandad out of 93 e32 it has less ks on it than the n62 but every thing is just grunty,massive lobes,the flat plate above is the oil supply it pushes oil down the side of the studs in to bearing cap.blabla.

 

Edited August 25, 2021 by Deffed
Forgot to include media.

[Lubed 55]

What parts are worn as the pictures look good enough for the engine to run. Are any components broken? I wonder if the initial diagnosis carried out by the workshop was incorrect and its worth reassembling the engine then start a fresh diagnosis.

[Deffed 10]

Gday mate, chers for feedback. Was thinking about just putting it back together and seeing what happens. Lots of things iv red,read, looked at say that the lever arm are a precision bit of kit,with the lateral movement and the scoring on the cam and rollers just wondering how precise they are,manufactur date is 05year 262day and there that kind of colour that says very hot. I need to look into the oil supply im pritty sure they in creased the size 1/4 inch or 6mm. The holes that squirt oil in it are tiny. 

[Lubed 55]

Keep in mind that if you increase the oil hole diameter in the rail it will reduce lubrication to other engine components.

[Deffed 10]

There at the end of the line the 2 tubes are blanked at the end+i think the larger suppliy line is a factory item add to later n62 and the newer engines.

[KwS 2372]

Im not sure if this helps, but this is what the PUMA measure is about, https://www.bimmerfest.com/threads/repair-kit-for-idler-lever-4-8is.1269192/

[Deffed 10]

Yea mate thats what im looking for theres a few leads il follow them up and get back.cheers.👍

[Deffed 10]

Ah yea! Also dropped one of the nuts that holds the valvetronic bridge... went down big hole,oil drain hole straight to catch tray/sump. Ooops

[KwS 2372]

50 minutes ago, Deffed said:

Yea mate thats what im looking for theres a few leads il follow them up and get back.cheers.👍

Doesnt seem too complex, if your current levers have 3 stamped on them use the part numbers for either A or B, if its got 1 or 2 on it use A, or if it has 4, 5 or 6 use B. Both A and B part numbers from RealOEM are showing as available overseas (using the vin from my old 650i, which is likely the same parts but check first). Replacing just one lever is forbidden, it must be done as a kit.