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Old Jan 30, 2008 | 10:16 AM
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Default Load sidepipes

A friend of mine(not computer litterate) has asked me to help him. He has a 63 vert 340hp and recently installed Allens sidepipes (2-1/2")and they are way louder than he likes. Do any of you folks have experience with these and how he can quiet them down? Are there inserts he can put in them to quiet them down or are there any other solutions?
Thanks
Tim
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Old Jan 30, 2008 | 10:49 AM
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Some people stuff steel wool down them but for the most part, side pipes are always pretty loud.

A cross over pipe will help somewhat as well . . .
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Old Jan 30, 2008 | 11:02 AM
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Old Jan 30, 2008 | 11:44 AM
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Default that's just the way they are

Originally Posted by climbabout
A friend of mine(not computer litterate) has asked me to help him. He has a 63 vert 340hp and recently installed Allens sidepipes (2-1/2")and they are way louder than he likes.
That's just the nature of sidepipes.

You can quiet them down to the point that the car won't be perceived as loud by others. However, locate the exhaust outlet of an internal combustion engine within 3 feet of your ear and you are going to hear it no matter what.

Jim
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Old Jan 30, 2008 | 11:56 AM
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Tell him to turn the radio up or his hearing aid down.
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Old Jan 30, 2008 | 01:11 PM
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Tell him to sell it and get a C6 if he wants a quiet Corvette.

"Sidepipes" and "Too loud" should never collide in the same sentence.
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Old Jan 30, 2008 | 01:48 PM
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The first time i drove my mid-year i thought the sidepipes were way cool. By the end of the first week i knew they had to go before i became deaf. It was just painful to cruise with that obnoxious noise droning im my ear. IMHO you have to be partially deaf getting worse to really enjoy them.
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Old Jan 30, 2008 | 01:53 PM
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The words "quiet" and "sidepipe" are mutually exclusive, especially the Allen's reproductions; that's the way they are.
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Old Jan 30, 2008 | 01:58 PM
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Buy lots of foam ear plugs
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Old Jan 30, 2008 | 02:46 PM
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Default Loud Sidepipes

Thanks for the responses so far - the Allens pipes seem considerably louder than the factory pipes I have heard - he was hoping someone knew of an insert or other small muffler that could be installed in them or ahead of them to make them sound a little closer to the factory pipes in terms of volume. Thanks
Tim
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Old Jan 30, 2008 | 02:55 PM
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I think his best option would be to call Mike Allen and maybe Mike would cut him a deal on an exchange for original type pipes of 1 3/4" in diameter OR Mike could maybe add a small resonator inline. I recall him mentioning doing something like that for a 500 inch Lingenfelter car with 2 1/2" pipes when I bought mine. Said if they were too loud we could discuss something like that at a later time.
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Old Jan 30, 2008 | 03:46 PM
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There was a very long post about 3 or 4 months ago by "MasterDave" (sp) where he invented a mufflering type insert into the sidepipes and shared the design and results.

If I find it I'll post the link. Maybe others recall that discussion in more detail.
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Old Jan 30, 2008 | 04:12 PM
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Maybe a trade with someone who wants louder side pipes then the stock ones they have. You both get what you want.
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Old Jan 30, 2008 | 04:19 PM
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The original sidepipes had either 1 3/4 or 1 7/8 internal baffles and are much quieter than the larger 2 1/4 or 2 1/2 internal baffle sidepipes.

The larger baffle flows much better but is louder.

A crossover will help some, but no matter what... they are loud.

A 63 vert shouldn't have sidepipes on it anyway LOL. although if it were my car... they'd be there.

A
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Old Jan 30, 2008 | 04:29 PM
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Default side pipes

A friend of mine had a set of 8 inch converters made and installed before the second bend, It helped a lot.

I installed a Classic Chevy 5 speed in my 65 (stock side pipes) so when I go on highway trips and get in 5th gear I can run at 80 mph at 2000 rpm, my pipes are very quiet on the highway.

You can also buy an MP3 player, use the ear plugs, listen to your tunes, it helps as well.
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