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 The e23 745i and Turbocharged BMW Motor Topics
 BMW M106/M102/M30 Turbo Topics
 No boost at all :-(
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Posted - Aug 15 2017 :  12:09:29  Show Profile  Reply with Quote
Hello all BMW turbo specialists!

I have a problem on my 1980 M102, no boost at all.
On my boost gauge, I can read vaccum at idle, but only 0bars at full throttle.

I read a lot of topics here but not found any solutions

I have measured turbo play: axial play 0.05mm, and radial play 0.5mm, so it's correct.
The turbine turn correctly and wheels are in good conditions.

See pictures:

I have search for leaks and found a cracked hose (n11631273055) but no effect after new one installed.

I took the compressions and they are good (9, 8.5, 9, 8.75, 9 and 9)

The ignition timing is correct (12 at idle and 34 at 2000rpm).

I don't know where to look, does anyone have an idea?

thank you very much

Edited by - jcd on Aug 15 2017 12:16:13
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