What happens when you remove the fiberglass?

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wolfmangk

Member

Jun 18, 2002

34

0

• Jul 11, 2002

• #1

Hello, I just got a spark arrestor for my 1979 RM 250, and to get it on I had to grind the weld that holds the fiberglass and remove the fiberglass/ perforated length from the muffler. What does the fiberglass do? Does it just make the pipe quieter, or does it have any benefits as to performance? Does anyone know?

 

D

dell30rb

Uhhh...

Dec 2, 2001

1,510

0

• Jul 11, 2002

• #2

It makes the bike WAYYY louder, and dosent improve preformance. You need to have that in there

 

1

125 rider

Sponsoring Member

Oct 1, 2000

408

1

• Jul 11, 2002

• #3

Your bike will be louder and will have less power due to turbulence in the muffler.

 

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wolfmangk

Member

Jun 18, 2002

34

0

• Jul 11, 2002

• Thread starter
• #4

Alright, I put some wall insulation fiberglass (NEW) in it and slapped the sucker back in there. Thanks for the replies. By the way, the muffler was welded shot from both ends, I don't think they wanted me to ever replace the packing. Is that way my bike was so loud?

 

David Trustrum

~SPONSOR~

Jan 25, 2001

1,396

0

• Jul 11, 2002

• #5

’79 was in a place long ago far away, who knows what they were thinking? Probably –“hey lets sell a lot of these things really cheap”.