Cylinder Head Temps
Posted: Fri Aug 19, 2016 8:10 am
Has anyone ever run a cylinder head temp gauge? The ones that go around the spark plugs? My bike has run reasonably well since I've tuned it up a few years ago, check plugs all the time, nice and gray, snappy throttle, 1100rpm idle, needs a couple of miles of choke before warmed up enough. Installed one of these gauges yesterday and cruising in 85 degree weather to work today, 65-75 mph, 5000-5500rpm, #4 cylinder head temp was 340-350 degrees Fahrenheit. 3500rpm it goes down to about 320.
I DO run a .005" clearance on my exhaust valves per an sohc4 post by "Hondaman":
"This extra clearance lets the valve sit on the seat slightly longer, transferring a bit more heat into the head. Yes, it loses some cam duration, but on the exhaust side this doesn't hurt you like it does on the intake side"
Seems awfully hot but there's no real spec so who knows. Wondering if anyone had any numbers to compare to.
Mounted it on top of my fusebox with double sided tape it came with, regrettably because I didn't read the instructions and there is a button on the back to switch between max capture modes that is now inaccessible.
I DO run a .005" clearance on my exhaust valves per an sohc4 post by "Hondaman":
"This extra clearance lets the valve sit on the seat slightly longer, transferring a bit more heat into the head. Yes, it loses some cam duration, but on the exhaust side this doesn't hurt you like it does on the intake side"
Seems awfully hot but there's no real spec so who knows. Wondering if anyone had any numbers to compare to.
Mounted it on top of my fusebox with double sided tape it came with, regrettably because I didn't read the instructions and there is a button on the back to switch between max capture modes that is now inaccessible.