To: Volvo303@yahoogroups.com From: "rdoveryhoo" Date: Sun, 16 Nov 2008 19:17:21 -0000 Subject: [Volvo303] Noise reduction modification Reply-To: Volvo303@yahoogroups.com A few months ago I helped a chap who had just bought a TGB20 and who was busy restoring it. For various reasons he had to sell up but not before he passed on an excellent tip. Whilst lifting the cab off to repair a panel or 2, he realised that it was basically hard mounted to the chassis and that a significant amount of noise was being transmitted into the cab through these nylon washers. He experimented by replacing the nylon washers with rubber and noticed a massive reduction in noise. Roll forward a month or 4 and I'm busy repainting and fettling ready for the big engine swap and despite mine being a TGB13 I reckoned it would only take an hour or so to try this out. I removed all four cab body mounts (ignoring the rear ones, many of which are rubber already) got hold of some old acoustic matting and made replacement washers. The Nylon is 8mm thick so I started off by doubling up in rubber (to 10mm) and went mad trying to squeeze them in. I eventually gave up with only the LHS ones done as a double washer and settled for only 5mm of rubber on the RHS. I also noticed that the 3 front bolts were fouling on the body so I slipped in some extra metal washers to pack the bolt out just to make sure. I also didn't bolt up too tightly either A quick test drive later and the difference is amazing. It's not a Rolls Royce but the irritating vibrations and transmission noises are gone. Cost UKP0.00, time 40 minutes. Richard www.volvoc303.co.uk www.difflock.com To: Volvo303@yahoogroups.com From: "chribrud" Date: Wed, 28 Oct 2009 21:17:25 -0000 Subject: [Volvo303] Vibration and noise reduction Reply-To: Volvo303@yahoogroups.com I've reduced the noise in my cabin by replacing the mounts for the hut. See some pictures on http://picasaweb.google.no/Groentass/VibrasjnsdempingAvHyttePaVolvoTGB1317C304MedRadiohytte# The description is in norwegian, while the comments are in english. The rubber helped a lot, especially to reduce vibrations from the tyres. And that was before I was finished, with one peace of plastic still in place. I used longer bolts than the originals to get in as much rubber as I wanted to. In front it's possible to reuse the rear bolts. It might be hard to get long enough bolts in the rear, so a bar 12mm without heads might do the trick. Remember to use locking nuts, and I suppose it'll be necessary to glue one to work like the head. Christian