ELIMINATOR
Registered user
The plate that is riveted onto the end of the silencer was rattling, the rivets had worked loose.
I borrowed a rivet gun, and got some rivets. I drilled out the old ones (obviously losing the old rivet inside the silencer.
).
This revealed 3 off Ø5 that were for the rivets, but also 3 off Ø6.3. I couldn't resist starting the bike to hear if there was any difference to the standard silencer. Hmm, sounded far better.
My question is, if I were to remove both plates and run the bike like this, am I likely to cause engine damage by weakening the mixture?
The standard silencer outlet is Ø26 which is 530 square mm (if my dubious maths is correct!)
The additional holes equate to 3off @ Ø6.3 = 93square mm & 3off @ Ø5 = 60square mm. added together = 153 square mm
So the silencer opening would be increased by about 29%.
I have a Yamaha XJ900S Diversion, about 3 years ago, I fitted a Delkevic system to the bike. I fretted about removing the baffles and damaging the engine. Baffles were removed, bike sounded far fruitier, no problems were ever encountered.
Enlighten me with your thoughts?
I borrowed a rivet gun, and got some rivets. I drilled out the old ones (obviously losing the old rivet inside the silencer.
).This revealed 3 off Ø5 that were for the rivets, but also 3 off Ø6.3. I couldn't resist starting the bike to hear if there was any difference to the standard silencer. Hmm, sounded far better.
My question is, if I were to remove both plates and run the bike like this, am I likely to cause engine damage by weakening the mixture?
The standard silencer outlet is Ø26 which is 530 square mm (if my dubious maths is correct!)
The additional holes equate to 3off @ Ø6.3 = 93square mm & 3off @ Ø5 = 60square mm. added together = 153 square mm
So the silencer opening would be increased by about 29%.
I have a Yamaha XJ900S Diversion, about 3 years ago, I fitted a Delkevic system to the bike. I fretted about removing the baffles and damaging the engine. Baffles were removed, bike sounded far fruitier, no problems were ever encountered.
Enlighten me with your thoughts?
