Hello George,
Saturday, July 08, 2000, 11:30:11 PM, you wrote:
GP> Bill
GP> WOW, I hope you get a good answer to this. I've got this '95
GP> Virago 750 that could benefit, Could you find out more?
GP> Like what size drill and where/why he put the holes where he
GP> did.
GP> Then it might sound as great as my Sprite! (Compulsory
GP> spridget comment)
GP> George Procyshyn
GP> ----- Original Message -----
GP> From: "Bill Miller" <millerb@netusa1.net>
GP> To: "Spridgets" <spridgets@autox.team.net>
GP> Sent: Saturday, July 08, 2000 11:16 PM
GP> Subject: Non LBC Motorcycle question.
>> Since it's slow, I have a question about my motorcycle.
GP> 1983 KZ750. Bought
>> it new and hardly ever ride it. Drove it to work Friday
GP> and one of my
>> younger co-workers said he'd like to do something to it to
GP> make it perform a
>> lot better. He said it would be louder, but sound better
GP> and perform *much*
>> better. He drill four strategically placed holes in each
GP> of the back of the
>> exhaust pipes. I know the size was important, because he
GP> searched for the
>> right sized drill bit for a half hour. WOW, talk about a
GP> difference. Like
>> a new bike. I bet it has twice the acceleration than it
GP> did before. Ok why
>> that much difference? I understand relieving back
GP> pressure helps, but not
>> that much. Also, it "cackles" now. Small little
GP> "backfires" upon
>> deceleration and quick revs. Kinda sounds nice, but I
GP> don't understand how
>> adding holes to the back of the exhaust system can cause
GP> backfires.
>>
>> It got me thinking about drilling holes in the Sprite
GP> mufflers......
>>
>> Bill
>>
It's backfiring because you're running much more air through it and
it's going lean. Do this at your own risk.
Best regards,
fooshst mailto:fooshst@stumail.gc.cc.fl.us
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