Hi there..it's an answer I was waiting for.
Could you tell me :
1. I assume those are identical units on both sides..right?
2. What would it involve if I swap them...Valve cover gasket I assume,but further..
3. What did you gain beyond disappeared tapping noises? Power ,better fuel milage?
4. and the last one...was it DIY and what was the cost and where did you get your parts from..(3 in 1
)
Thanks a lot in advance.
Quote:
Originally Posted by Idle
Hi.
Flekz, I take it your engine is is an M62TU?
Yes you are correct, the VANOS unit is No1 in your diagram. There is one on the front of both inlet camshafts.
There is no fix from Beisan for the V8 VANOS as they are sealed units. The only way to sort it is to replace both units.
Of course that depends on what the problem is. Can you give more information on why you want to do this job and why you think it is necessary to change the VANOS solenoids as well? It's quite an expensive job and needs a few special tools.
I have recently done the VANOS replacement procedure on my 2000 E38 740i V8 4.4 M62TU.
The reason I did it was because there was a tapping/knocking deisel like sound coming from the top of the valve covers at hot idle. After two years of investigation, numerous failed 'fixes' and worrying that something very bad could go wrong at any moment, I found it was the VANOS units all along. Now the engine is nice and quiet.
Hope this helps.
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