http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/ Wed, 03 Mar 2010 09:37:45 -0600 http://wordpress.org/?v=2.8.6 hourly 1 http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/comment-page-1/#comment-4756 Just cause Sun, 22 Nov 2009 15:57:15 +0000 http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/#comment-4756 weld it asap weld it asap

]]> http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/comment-page-1/#comment-4755 auburn Sun, 22 Nov 2009 15:36:56 +0000 http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/#comment-4755 The bike won't perform well as you don't have the backpressure. Send it to be repaired The bike won’t perform well as you don’t have the backpressure. Send it to be repaired

]]> http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/comment-page-1/#comment-4754 Jeremy K Sun, 22 Nov 2009 15:22:42 +0000 http://motorbiketheorytest.net/motorbike/is-it-bad-to-keep-riding-my-motorbike-with-a-cracked-expansion-chamber/#comment-4754 You can get away with it for a while, but I wouldn't run it for very long like that. The reason being, engines are tuned (jetted) to the exhaust system... the expansion chamber has a lot to do with this, and it involves everything from air movement to resonance inside the chamber. When the chamber changes, from a dent, to a hole, to an aftermarket style/shape, the air/fuel ratio will change. This could be a minor change that you wouldn't notice, but it could cause the engine to run lean enough to cause drastically accelerated wear on parts. Unfortunately, you won't know for sure how much the A/F ratio was affected, without test equipment. So, try to get it fixed as soon as possible, but it's not going to hurt if you run it a little here and there. You can get away with it for a while, but I wouldn’t run it for very long like that.
The reason being, engines are tuned (jetted) to the exhaust system… the expansion chamber has a lot to do with this, and it involves everything from air movement to resonance inside the chamber. When the chamber changes, from a dent, to a hole, to an aftermarket style/shape, the air/fuel ratio will change. This could be a minor change that you wouldn’t notice, but it could cause the engine to run lean enough to cause drastically accelerated wear on parts. Unfortunately, you won’t know for sure how much the A/F ratio was affected, without test equipment.
So, try to get it fixed as soon as possible, but it’s not going to hurt if you run it a little here and there.

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