rear pipe glowing
#1
Join Date: Dec 2010
Location: SE London/Kent Borders UK
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rear pipe glowing
Hi All
Was out for a ride last night and a mate noticed my rear pipe glowing when giving it the beans, by the time we came to a stop it had stopped but he kept an eye on it for the rest of night and it happened a couple more times, only really when travelling at above 70mph or accelerating hard.
Bike is running the stock carb with a 190 main and a 45 pilot (if i remember correctly) RSD open filter a Hi-4 ignition that is advanced a bit i think up to number 7 of 10, screamin eagle coil and leads and a pair of supertrapps
The Y piece it was glowing from has been repaired after splitting and i have a brand new Y piece sitting in a box (ebay bargain) that i was going to put on over the winter
I read somewhere the pipes would glow if it was running to lean is that correct? again if i remember correctly the mixture is about 2.5 turns out.
What do i do? will it cause damage? i am off in a couple of weeks on a 600+ mile weekend so would like it to be sorted before i go.
Cheers
Neil
Was out for a ride last night and a mate noticed my rear pipe glowing when giving it the beans, by the time we came to a stop it had stopped but he kept an eye on it for the rest of night and it happened a couple more times, only really when travelling at above 70mph or accelerating hard.
Bike is running the stock carb with a 190 main and a 45 pilot (if i remember correctly) RSD open filter a Hi-4 ignition that is advanced a bit i think up to number 7 of 10, screamin eagle coil and leads and a pair of supertrapps
The Y piece it was glowing from has been repaired after splitting and i have a brand new Y piece sitting in a box (ebay bargain) that i was going to put on over the winter
I read somewhere the pipes would glow if it was running to lean is that correct? again if i remember correctly the mixture is about 2.5 turns out.
What do i do? will it cause damage? i am off in a couple of weeks on a 600+ mile weekend so would like it to be sorted before i go.
Cheers
Neil
#2
I've seen pics of engines on test beds with the entire system glowing bright and pretty impressive it looks too! That Y pipe is also a bit of a nightmare as exhausts go, so I'm not surprised if it is a hot-spot. Does your mate have a Harley and does his do this too? You could be pushing forward the frontiers of exhaust study here!
#4
You're just thrashing the life out of it! Joking aside if you consider the colours that pipe turns to, blues and browns etc when cold, ir is getting pretty hot at some times. My first Harley, a shovel, was my first experience of bikes with shiny heat shields and I was horror struck at the state of the pipes the first time I removed the shields. Nothing surprises me now!
A rudimentary google suggests exhaust temperatures are around 700 degrees C coming out of the head, which corresponds to red hot. So it doesn't sound as if your pipe is unduly hot, although this is hardly a scientific analysis!
A rudimentary google suggests exhaust temperatures are around 700 degrees C coming out of the head, which corresponds to red hot. So it doesn't sound as if your pipe is unduly hot, although this is hardly a scientific analysis!
#7
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