So this is my first post here, but have been reading up a lot trying to get to know my bike better. Story goes like this. Bought a 08 Daytona 675 back in July 2010 with 2500 miles. Rode it a couple hundred miles, even in TX heat, and never saw the engine temp go above 5 bars, including some blue LED fun on some backroads sunday mornings.
So somewhere after a couple hundred miles without a radiator guard, I caused a pinhole leak in the rad. Rode the bike home with lots of stops to make sure I wasn't heat-stressing the engine. I ended up ordering a radiator off ebay from a wrecked 2010 and replaced the radiator myself. filled the radiator to the top and for the first couple starts the engine would heat up real quick to 7 bars. fan would turn on, but still overheating. shook the bike around to free up some loose air in the radiator lines and it got slightly better.
Now here's where I'm running into problems. On a typical ride even in 50-60F weather, I'll stay at 5 bars as long as I'm moving. If I'm sitting at a red light for longer than 2 minutes, the temp moves up to 6 bars, and occasionally 7. The minute I get rolling again and up to 40mph city speed limit, the cool air cools down the bike to 5 or 6 and the fan shuts back off. I know the fan is working, but does it sound like I need to drain and re-fill the radiator because I still have air maybe? Thanks for all the help.
CLIFFNOTES:
- Bought bike 6 months ago
- Rode maybe 800 miles and caused pinhole leak in rad
- Replaced rad and refilled, had some overheating still so tried to eliminate excess air
- Engine temp stays at 5 bars as long as I'm moving
- If I sit at a red light for too long, temp moves up to 7 bars
- What do I do? drain and refill? (No leaking anywhere for coolant)
So somewhere after a couple hundred miles without a radiator guard, I caused a pinhole leak in the rad. Rode the bike home with lots of stops to make sure I wasn't heat-stressing the engine. I ended up ordering a radiator off ebay from a wrecked 2010 and replaced the radiator myself. filled the radiator to the top and for the first couple starts the engine would heat up real quick to 7 bars. fan would turn on, but still overheating. shook the bike around to free up some loose air in the radiator lines and it got slightly better.
Now here's where I'm running into problems. On a typical ride even in 50-60F weather, I'll stay at 5 bars as long as I'm moving. If I'm sitting at a red light for longer than 2 minutes, the temp moves up to 6 bars, and occasionally 7. The minute I get rolling again and up to 40mph city speed limit, the cool air cools down the bike to 5 or 6 and the fan shuts back off. I know the fan is working, but does it sound like I need to drain and re-fill the radiator because I still have air maybe? Thanks for all the help.
CLIFFNOTES:
- Bought bike 6 months ago
- Rode maybe 800 miles and caused pinhole leak in rad
- Replaced rad and refilled, had some overheating still so tried to eliminate excess air
- Engine temp stays at 5 bars as long as I'm moving
- If I sit at a red light for too long, temp moves up to 7 bars
- What do I do? drain and refill? (No leaking anywhere for coolant)