Hi all,
has anyone had any success with quieting down the pump on their Silvia? Its not _terribly_ noisy but I live in an apartment with paper-thin walls and I would quite like to hush it up a bit. ( The Rockys another matter! ).
I cracked it open (see pic) and found the pump is already isolated on very flexible mounts. Despite that, seemingly a fair bit of vibration still gets transmitted to the body, and possibly to the counter.
Its a lot quieter running it with the panels off, so it seems most of the problem lies with resonance there, or in loose-fitting joints. Theres a mid-frequency clacking that radiates directly from the pump but its less bothersome than the lower-frequency vibration from the bodywork.
Some initial possibilities that occur to me are:
* Filling the pump recess with some sort of dense, sound-deadening ( removable! ) fill.
* Applying some sound-absorbing liner ( which I happen to have ) to the panels.
* Improving the damping in the joints somehow ( silicone sealant or tape? ).
Has anybody had similar experiences? Either way, your learned opinions would be much appreciated.
Cheers,
Liam
N.B.
Gday Liam...... Please keep image size to a maximum of 640x480 pixels to ensure it is easily viewable in most browsers to avoid excessive scrolling, can be very annoying....
Thanks,
Mal.

has anyone had any success with quieting down the pump on their Silvia? Its not _terribly_ noisy but I live in an apartment with paper-thin walls and I would quite like to hush it up a bit. ( The Rockys another matter! ).
I cracked it open (see pic) and found the pump is already isolated on very flexible mounts. Despite that, seemingly a fair bit of vibration still gets transmitted to the body, and possibly to the counter.
Its a lot quieter running it with the panels off, so it seems most of the problem lies with resonance there, or in loose-fitting joints. Theres a mid-frequency clacking that radiates directly from the pump but its less bothersome than the lower-frequency vibration from the bodywork.
Some initial possibilities that occur to me are:
* Filling the pump recess with some sort of dense, sound-deadening ( removable! ) fill.
* Applying some sound-absorbing liner ( which I happen to have ) to the panels.
* Improving the damping in the joints somehow ( silicone sealant or tape? ).
Has anybody had similar experiences? Either way, your learned opinions would be much appreciated.
Cheers,
Liam
N.B.
Gday Liam...... Please keep image size to a maximum of 640x480 pixels to ensure it is easily viewable in most browsers to avoid excessive scrolling, can be very annoying....
Thanks,
Mal.





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