im looking for a small engine repair shop to purchase a quiet muffler and resonator for a portable generator?

Question

locations in san diego ca.

Answer 1

Much of the problem arises from movement and vibration of the engine. You can't simply bolt on a larger muffler and hold it to the frame of the generator. There must be some way for things to flex and bend while the engine is running. If you can redirect the noise upwards it will help, and will also allow easier mounting of a new exhaust.

There was someone on eBay selling lawn tractor mufflers to mount on Briggs and Stratton engines a month or so ago. May work if that's your engine type.

Here are some suggestions from my web page about generator noise.

Choose an operating location as far away as possible. Note that a larger gauge wire is needed to reduce voltage drop as line length increases. Reducing line loss is required to minimize power loss and to ensure maximum power is available to the house. Lights will flicker less when heavy loads are attached.

Change the exhaust system. Noise from the portable generator systems comes primarily from two sources, the engine block and the exhaust system. With an air cooled engine there is little you can do about block noise. Some engines can have a larger muffler attached or make other changes to the exhaust system. Merely mounting exhaust pipe vertically will noticeably reduce noise.

Build a noise shielding enclosure. This could be as simple as a piece of plywood to reflect sound away from the house to a separate shed to hold the generator. Design your enclosure with safety in mind. Provide adequate air circulation and ventilation to prevent heat buildup and to remove carbon monoxide.

If the noise bothers your neighbors, invite them over for coffee or offer to run line to their home to power the freezer or a few lights. Talk to them before starting the engine, ask they let you know if the noise is bothersome before they phone the police or harbor any resentment. A little diplomacy can go a long way.

Last resort, shut off the engine or buy a quiet generator.

Answer 2

try a motorcycle shop the muffler is a pretty simple device pipe and vented cap to fit on the end of the pipe they may be able to fabricate one for you.