Drilling Baffles?

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Ian522
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Drilling Baffles?

#1 Unread post by Ian522 »

I have an '82 Honda CM450 twin. At wide open throttle it sings like a british twin, but at idle and at low speeds it is really quiet. I am looking for a little more volume without being too loud. I was thinking of drilling a few holes in the baffles to see how it sounds.

However, I am trying to avoid having to rejet or adjust the carbs. Im afraid that the bike may run lean if I just drill the holes and leave the carbs alone. Id rather not mess up an otherwise reliable bike.

Anyone have any insight?

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Johnj
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#2 Unread post by Johnj »

82s would be set very lean from the factory, so opening up the exaust at all, will just make it worse. And I don't think the bike will run as well.I'd leave it alone.
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Ian522
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#3 Unread post by Ian522 »

Hmm..thats what I was afraid of. Do you think even just a couple 3/8 in. holes in only the rear outlet baffle (not the inner baffles deep inside the mufflers) would make a difference in backpressure? I was thinking that if things didnt go well, I could then plug the holes with 1/2 in. screws and it would be sorta back to stock.

Or maybe I better just leave well enough alone.

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