I have my DISA out of the engine for other preventivate maintenances, and reading around the forum there I was wondering about DISA gasket.
Here's the starting points:
The Oring on my 2.2 M54 so should be (already) fine, but shows signs of its age. I don't know if the o-ring should have this "pyramidal" shape, or if is due to worn.
![Image]()
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I was able to find a rubber o-ring that fits the dimensions I should find, as read there
www.e46fanatics.com
Thickness - 2.5 mm (do not suggest anything thicker)
I.D. - 51mm - 55 mm
O.D. - 55mm - 60 mm
Preferred material - silicon, however, rubber may substitute
'cause as @Bali suggested me, having the same DISA PN of 2.5 engine, this may be the right dimensions.
Here's the rubber O-ring I found:
![Image]()
pics are a little deformed, is exactly 55mm internal/60mm external.
Is not one of the supercool silicone-viton-fluorosilicone one, seems "regular" rubber.
Changing it may be an enormous mistake or a "simple" o-ring, even if rubber, should be better than a 20+ molded gasket?
The o-ring was in a hardware store near my home and costs really few bucks, so if it works, it won't be a problem to change with a new one every time I have to remove DISA. What concerns me is: will it last and stay strong if the disa will stay there 10 years?
Any opinion and/or experience appreciated.
Here's the starting points:
- I never had any error codes till now.
- I never made a smoke test: but having no codes I didn't ever suspected any vacuum leaks, or at least not evident.
- I have a slight "hiss" under the DISA, very very light on low rpm as a slight throttle hesitation I explained here but I don't honestly know if is DISA related
- I'm already being of the idea that making "blind changes" of parts is not an intelligent way of solving problems. But a preventivate maintenance is.
The Oring on my 2.2 M54 so should be (already) fine, but shows signs of its age. I don't know if the o-ring should have this "pyramidal" shape, or if is due to worn.
I was able to find a rubber o-ring that fits the dimensions I should find, as read there
Cold weather misfires and CEL, common issues $50 fix!
So tis the season for the usual car runs rough on start up, misfires, CEL/MIL, stalling. Before you get too deep into this thread, I believe most of the data is relevant to the 325/330 models, or typical the 2.5L M52tu and 3.0L M54 engines also used in the E39 5 series and E85??Z4 series...
www.e46fanatics.com
Thickness - 2.5 mm (do not suggest anything thicker)
I.D. - 51mm - 55 mm
O.D. - 55mm - 60 mm
Preferred material - silicon, however, rubber may substitute
'cause as @Bali suggested me, having the same DISA PN of 2.5 engine, this may be the right dimensions.
Here's the rubber O-ring I found:
pics are a little deformed, is exactly 55mm internal/60mm external.
Is not one of the supercool silicone-viton-fluorosilicone one, seems "regular" rubber.
Changing it may be an enormous mistake or a "simple" o-ring, even if rubber, should be better than a 20+ molded gasket?
The o-ring was in a hardware store near my home and costs really few bucks, so if it works, it won't be a problem to change with a new one every time I have to remove DISA. What concerns me is: will it last and stay strong if the disa will stay there 10 years?
Any opinion and/or experience appreciated.
rolleyes:
