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I have the Valk genuine workshop manual. It omits interesting things like the main bearing journal and big-end diameters, although it does include many other dimensions you don't need to know to maintain the bike. For example, the valve timing. This engine has no valve overlap!
One thing I miss on the Valk is a temperature indicator. My Daytona 955i has a digital one, so I know that the fan starts at 103 degrees C (set in the ECU).
Does anyone know what coolant temperature the fans in the Valk start at, and the temperature when the temp warning indicator lights?
IanB
 

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I have the Valk genuine workshop manual. It omits interesting things like the main bearing journal and big-end diameters, although it does include many other dimensions you don't need to know to maintain the bike. For example, the valve timing. This engine has no valve overlap!
One thing I miss on the Valk is a temperature indicator. My Daytona 955i has a digital one, so I know that the fan starts at 103 degrees C (set in the ECU).
Does anyone know what coolant temperature the fans in the Valk start at, and the temperature when the temp warning indicator lights?
IanB
Thermostat in the Valk begins to open at 169-176F. It should be fully open at 194F. I couldn't fing anything on fan start.
Quote from Honda Parts.
 

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Yep, the workshop manual lists those temperatures for the thermostat (76-80, and 90 degrees C) but nothing I have found for the fan start and warning light. Quite an omission, really, but then we don't even know what the temperature is, so how can we check for correct operation?

The other thing I really miss is a gear indicator. There is a gear position sensor in the electrical schematic, so the ECU does know which gear. I have a HealTech GLPro DS series gear indicator ready to be installed (when I get around to removing the tank to thread the cable through). I think this indicator assumes a Honda has no GPS, and constantly asks the ECU the engine rpm and road speed, works out which gear from those. The one on my Triumph Tiger 1050 worked that way. The one on my Daytona 955i (X series) instead taps into the speedo, tach signal lines in the wiring loom and counts the pulses itself. It works well too.
IanB
 

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I have the very same indicator (Red). Red and Blue are very visible during the day. Basically plug and play, go through the gears and you are good to go! I've had the indicator for two years without any problems! I mounted it on the left side of the speedo gauge with the provided double sided tape. ;)
 

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To overlap or not to overlap

I have the Valk genuine workshop manual. It omits interesting things like the main bearing journal and big-end diameters, although it does include many other dimensions you don't need to know to maintain the bike. For example, the valve timing. This engine has no valve overlap!


The valve timing spec numbers in the service manual are taken only at a set position of 1mm valve lift. Valve overlap does take place on this engine but to a lesser extent than some other engines do. In other words the overlap takes place when the valves are open less than 1mm. The attached graph Is Not from a GL1800C but is the closest I could find with a short search. It helps to show the valve overlap compared to lift. On this graph the overlap triangle peaks at about 1.5mm but an 1800 F6C's of course would peak at just under 1mm. This graph is not marked for what model its for but I highly suspect its for a GL1500C 49 state model. The GL1500C California model had different cams with less overlap similar to the GL18.
 

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I have the very same indicator (Red). Red and Blue are very visible during the day. Basically plug and play, go through the gears and you are good to go! I've had the indicator for two years without any problems! I mounted it on the left side of the speedo gauge with the provided double sided tape. ;)
**** you people! Another widget added to my wish list. I think I'm spending more on this bike than I've saved in car insurance. Well, at least I'm not spending $300/month on gas...yet.
 
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