exaust question
I have another question. I know im a needy b****. So after rebuilding the rear head one muffler gets hot (meaning you can't rest your hand on it, but the other side does not get hot (meaning i can rest my hand on the muffler). Shouldn't they be the same temp?
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one side will be hotter then the other... just in the design of the thing
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Ok thanks i thought that because of the crossover thing it would equal out. But im not sure how it works.
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Ive never hit mine with an IR temp gun, but I know both of mine get hot... the same temp? No idea.. but hot.
If you have a header not getting hot, you may be running on a single cylinder at times, under load, ... if it's just the exhaust can.. pffffttt, no idea.... |
Here is the explanation that I've found most reasonable: The crossover and exhaust system are built in a way that when the bike is idling, most of the pressure flows out of the left side of the bike. The right side will still give pulses at low rpm/s but it won't heat up. After back pressure builds at higher rpm/s the exhaust will flow out of both sides evenly. You can tell this if you ride the bike around for a bit, both sides will be hot rather than just the left side.
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Im going to check the headers with an ir gun tonight. I disconnected the front plug wire and it fired on just the rear cylinder which is the one i rebuilt the head on, and did the same for the front.they both fired and ran.
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Originally Posted by 99superhawk_Dom
(Post 341804)
Im going to check the headers with an ir gun tonight. I disconnected the front plug wire and it fired on just the rear cylinder which is the one i rebuilt the head on, and did the same for the front.they both fired and ran.
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Originally Posted by twist
(Post 341809)
the VTR is new to me but I do know that the front cylinder runs hotter than the rear. Same with most v twins. Harleys are really extreme since they are not liquid cooled. I never noticed it myself, both are usually hot, too hot to touch and at idle the pulse feels the same. Maybe I have a "special" VTR! HA!
And I always thought the front cylinder ran cooler on this bike (hence running a richer mix in the carb in the back to cool it down a bit). Reason being it is exposed to fresh cool air up front riding... |
Thank for all the responses. This is not my first street bike, but is my first v-twin and the first street bike that i have opened the engine up like i had to. I've rebuilt dirt bike and car engines. Maybe i'm being paranoid/not trusting my work. (I mean it started right up after i replaced the valves and put the head on! How often does that happen.) I just never noticed ot before.
I don't know much about superhawks, but if anyone has any technical questions about apple computers or apple wireless networking just ask. Again thanks for all the help! |
Originally Posted by twist
(Post 341809)
the VTR is new to me but I do know that the front cylinder runs hotter than the rear. Same with most v twins. Harleys are really extreme since they are not liquid cooled. I never noticed it myself, both are usually hot, too hot to touch and at idle the pulse feels the same. Maybe I have a "special" VTR! HA!
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Originally Posted by HRCA#1
(Post 341833)
I think you have that backwards the rear runs hotter hence the richer jetting.
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