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Exhaust advice

  • Thread starter Thread starter Syd
  • Start date Start date
S

Syd

Guest
Hi Y'all - I'm planning to tidy up the 4-1 headers that came on my '80 1000G and would like to get some advice/opinions regarding the size of the pipe that goes from the collector to the muffler. The current size is 50 mm I.D. I have been looking at a reverse cone muffler to put on the bike, but the maximum inlet size of the muffler is 45 mm or 1 3/4 inch. A local exhaust shop can convert the header to muffler pipe by welding in a reducer section. This would take the 4-1 headers from 50 mm at the collector to 45 mm at the muffler.

Does anyone have any advice regarding this configuration? Has anyone else done a similar thing without compromising engine performance? Is there an optimum size 'collector to muffler' pipe for this model of bike?

Cheers
 
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