Noise Reduction

Post by **jonathon** » Wed Jan 11, 2006 7:26 pm

I'm still waiting for a suitable time to see the Noisekiller boss, Think we are both just too busy at the moment. I'll try again next week, I haven't forgotten.

Post by **MikeNash** » Wed Mar 15, 2006 3:27 pm

I know this subject is very slow moving but, alas, so much rubbish keeps intruding into Moggyworld. Anyway, I've replaced the quarterlight rubbers. (See under Bodywork of the 12th of March 2006 for comment).
The noise reduction was impressive but it was masking a lesser noise from the gap between the door and body. This has been sealed with Stormguard Draught Excluder (available from Focus at about £5 a role).
It comes in E and P, shape the latter covering 3-5mm gaps. The main problem area was around the upper q-light hinge and required two layers of the P shape to do it.
Using a noise meter I can't detect a reduction, but I think this is typical of this sort of noise, ie not loud but very irritating and close to the ear. Anyway, it removal makes a big improvement and I find that I can also reduce the treble on my radio cos it does'nt have to cut thro the high pitch whistling - another improvement!

Has anyone tried coating the outside of the aircleaner tinware with sound absorting stuff? If you run without it there's an enormous racket - the main change when you fit a K&N filter, I suspect. So perhaps improving the tinware wii get a further reduction, and doing with most advantage, ie at the noise source. Regards, MikeN.

Post by **Multiphonikks** » Wed Mar 15, 2006 4:53 pm

I'd say Mike that it may be worth making an internal firewall behind the current minor one. I know that that front bulkhead isn't that thick in places... as well as plugging up those holes you don't use in it!

I've been thinking of what to do with Hebe during the process of restoration in order to make her less noisy. I suspect that will be on my list

Post by **MikeNash** » Wed Mar 15, 2006 9:47 pm

If your's is stripped Nikki, you could stick Dynamat or Brown bread to the engine side of the firewall too. On up and running cars your idea of an extra wall sandwiching sound absorbant material might be the only useful choice. As I've got the carpet out (just fitted Metro seats) and got to replace it, I'll have to do something - perhaps like your idea. Regards, MikeN.

Post by **Peetee** » Sun Mar 26, 2006 8:40 pm

Moving on a bit. Those who are interested in reducing the sound levels in their Minor should pay particular attention to the rear of the car too. I have a 1300 engine and twin box exhaust and this combination creates noise from the rear of the exhaust which resonates inside the boot. I fitted sound deadening to the boot floor (around the fuel tank) and shelf with some improvement. What made a real difference however was lining the underside of the parcel shelf and also where the rear bulkhead meets the bodysides above the wheel arches.

Post by **Kevin** » Sun Mar 26, 2006 8:50 pm

What made a real difference however was lining the underside of the parcel shelf and also where the rear bulkhead meets the bodysides above the wheel arches.

That sounds good Peetee I would never have thought of trying under the parcel shelf.

Post by **Peetee** » Sun Mar 26, 2006 9:23 pm

Hope it's useful. Bear in mind where else I have covered in previous posts.

Post by **Peetee** » Sun Apr 02, 2006 10:23 pm

Oh and have a look at the bottom of the doors too. I discovered today that the seals were'nt sealing and a big draft and a fair bit of noise was coming in.

Post by **Onne** » Sun Apr 02, 2006 11:07 pm

Any idea how you are going to solve it? The Minor autmatic air circulation and aircondition system aka the draught?

Cunningly improved spelling, see next post!

Cheers for that Andrew

Post by **bigginger** » Sun Apr 02, 2006 11:34 pm

*NB usual "help 'cos I know Onne wants it, don't get over excited"*
It's "draught" - Americans spell it "draft" (duh)

Post by **Onne** » Mon Apr 03, 2006 7:28 am

eugh, I thought I didn't like it that way. out comes the editing tool

Post by **Peetee** » Mon Apr 03, 2006 8:27 am

Any idea how you are going to solve it?

I have fitted lengths of foam boot seal. I'll let you know if it works - or, more importantly, if it lasts and doesn't self destruct.

Post by **wibble_puppy** » Sun Jun 18, 2006 7:42 pm

has anyone else tried lining the underside of their parcel shelf? I'm very intrigued!!

juliet

Post by **Peetee** » Sun Jun 18, 2006 10:18 pm

has anyone else tried lining the underside of their parcel shelf? I'm very intrigued!!

That's the rear one that is part of the car structure. Not the cardboard thing under the dashboard.

Post by **wibble_puppy** » Mon Jun 19, 2006 10:19 am

Peetee wrote:That's the rear one that is part of the car structure. Not the cardboard thing under the dashboard.

ohhhh!! that makes a LOT more sense now lol..... thanks for explaining peetee....... so no good to us van people then

*puts away soundproofing tools and sits in the corner*